{
  "api_contract": "sourcey.catalog-api/v1",
  "release_id": "sha256:f94358e3c57b6e575ca58c8031b9b7552cbfdb411f937b8ecdc3b042c4980a77",
  "artifact_sha256": "sha256:7472396c2449279d33e7a0fb2426f02a89991501262d1db8c04c81d57bdf9021",
  "data": {
    "revision_contract": "sourcey.agent-readiness-revision/v1alpha1",
    "agent_readiness_profile_id": "arp_01kzf0m4xg7f2qx5a9t4kn8yc1",
    "entity_id": "ent_01kyh8fpe5xfhy18q4ccs4a07n",
    "scope": {
      "product": {
        "key": "resend-email-api",
        "name": "Resend Email API"
      },
      "funnel": {
        "key": "email-operations",
        "name": "Email operations"
      }
    },
    "catalog_binding": {
      "base_release_id": "sha256:cad9f851ab1bb553246eb2fb2b2803a4741814a33ccf28997014247439b9013d",
      "entity_revision_digest": "sha256:fa431d85735d9d0d9bb6217327736315684c127693bbdcb7cccded272abd8e3f"
    },
    "declaration_revision_digest": "sha256:6cb7a7727c7a72439ef0309a5451fac024196dfa1243c9ed485f3d473154a8cd",
    "declaration": {
      "declaration_id": "declaration_resend_email_api_operations",
      "provenance": {
        "repository": "sourcey/agent-ready-services",
        "commit": "62b512f0c49352e55a399ba53866a5effa431d71",
        "path": "vendors/re/resend.yaml",
        "git_blob_oid": "66fbf74eadbe0b6ab97fcf33b57ad6c9420b7259",
        "blob_digest": "sha256:e04a756342783e8b7b5428a70ee3d969f602b1d5c9cb3a92aa1ef3d5c567e8f2"
      },
      "status": "community_declared"
    },
    "lifecycle": "active",
    "effective_from": "2026-08-20T14:33:24.000Z",
    "signals": [
      {
        "stage": "evaluate",
        "signal_code": "eligibility_decidability",
        "selector_group_id": "eligibility_decidability-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:55:58.078Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "service-terms"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:fcea5adf49cd2e71fe4a04669be698132f3e3f5638cc713293c24f14f297bd1d",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:3030877e4f7b1b9eaf224c40a609f43cb0832b1b7f802dd8561367c4350fe0c6",
              "sha256:313447f3ca2af918e282499828cfc955d4022c17db79d0e9b10b5b6e1a0ca3bf",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:c211922e8f2c03eca4bc7dd45ef67870956ab6117ab9792024340d981430d289"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "service-terms"
            },
            "locators": [
              {
                "artifact_digest": "sha256:3030877e4f7b1b9eaf224c40a609f43cb0832b1b7f802dd8561367c4350fe0c6",
                "start_byte": 12498,
                "end_byte": 13296,
                "value_digest": "sha256:5191045a73a685030ae3fd9d211739b072e32f0157644c20773efd84eb3deb73"
              }
            ]
          }
        ],
        "note": "Resend's Terms of Service state that the service is intended for access and use by individuals who are at least eighteen years old and possess full legal authority, right, and capacity to enter into the agreement."
      },
      {
        "stage": "evaluate",
        "signal_code": "pricing_decidability",
        "selector_group_id": "pricing_decidability-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:29.922Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "pricing"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:bc4e32ec89b96e44944f2fbda1a9140760dd477f9a6c758a29b9c4f31bbf45d5",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
              "sha256:de46219baaf32c8bc9649006b7ed2f031dffc5b2118319b5f9abb672b9eb2c7b",
              "sha256:e69929d794c6cc9692a5aa4addd05b229d7b76fbe336eb6f086557addd37b1d9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "pricing"
            },
            "locators": [
              {
                "artifact_digest": "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
                "start_byte": 15223,
                "end_byte": 15920,
                "value_digest": "sha256:88032986d477c8584d6bc2fe7653843ad1822009d13e1a2efb6097c8232bfbb6"
              },
              {
                "artifact_digest": "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
                "start_byte": 4875,
                "end_byte": 5676,
                "value_digest": "sha256:320e7b1e8c574bf6bf6373425392bc8814ef2d589c5eab128ceb7d3c64bb40f2"
              }
            ]
          }
        ],
        "note": "Resend explicitly provides pricing details including a free tier, explicit add-on pricing such as $20/month for domains and $30/month for dedicated IPs, as well as pay-as-you-go rates for emails beyond quotas and automations ($0.0015 per run)."
      },
      {
        "stage": "evaluate",
        "signal_code": "service_discovery",
        "selector_group_id": "service_discovery-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:01.463Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-reference"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:654c98c474d836b90258b596364412970a3e932430fd2cfc049425ebffee46e2",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:39a4bfaa159cf7da0d9597e952238a409031b301ee648dc68bd7feccf1c4461d",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:98067d759c6ab5e5a14c0cd091e8415a552866884ec50b3033aa1d49b93c28de",
              "sha256:cb0d7b0b4e40ecdd60ccc434d44e43044536a80795c636e025b30ebf06017194"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-reference"
            },
            "locators": [
              {
                "artifact_digest": "sha256:cb0d7b0b4e40ecdd60ccc434d44e43044536a80795c636e025b30ebf06017194",
                "start_byte": 16452,
                "end_byte": 17251,
                "value_digest": "sha256:5b60e8012392bb58020c8cc1204cfe609ae70d6b3f9b0855aae3cd2276d4f1cc"
              }
            ]
          }
        ],
        "note": "Resend's API reference documents the service introduction, stating that all requests use HTTPS and the stable base URL https://api.resend.com, with Bearer token authentication."
      },
      {
        "stage": "evaluate",
        "signal_code": "terms_access",
        "selector_group_id": "terms_access-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:55:58.078Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "service-terms"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:fcea5adf49cd2e71fe4a04669be698132f3e3f5638cc713293c24f14f297bd1d",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:3030877e4f7b1b9eaf224c40a609f43cb0832b1b7f802dd8561367c4350fe0c6",
              "sha256:313447f3ca2af918e282499828cfc955d4022c17db79d0e9b10b5b6e1a0ca3bf",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:585e0118a7d48431894addac14fc09d007e918a9dfd096fefcfc8ffe51005da1"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "service-terms"
            },
            "locators": [
              {
                "artifact_digest": "sha256:3030877e4f7b1b9eaf224c40a609f43cb0832b1b7f802dd8561367c4350fe0c6",
                "start_byte": 2934,
                "end_byte": 3730,
                "value_digest": "sha256:4d03e99a3f373f78bbd4f79497515e5541927baca4fa7ece7d8efc0e1b4099b2"
              }
            ]
          }
        ],
        "note": "The Terms of Service are retrievable and readable, explicitly defining the Agreement between Plus Five Five, Inc. and the User governing the use of resend.com services."
      },
      {
        "stage": "sign_up",
        "signal_code": "access_control_operability",
        "selector_group_id": "access_control_operability-primary",
        "value": "unknown",
        "observed_at": "2026-08-20T15:57:08.291Z",
        "tested_surfaces": [
          {
            "node_kind": "endpoint",
            "node_id": "registration"
          }
        ],
        "assessment_method": {
          "name": "bounded-headless-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f1212e8cd082308cfde3c097bc933c4a4b72046b1f242205c3e27a3b020b3311"
        },
        "determination_bases": [],
        "note": "The sign-up page displays an email and password registration form with password requirements, but the retained evidence does not establish whether an agent can complete the access controls, navigation, validation, and handoffs deterministically."
      },
      {
        "stage": "sign_up",
        "signal_code": "access_entrypoint_stability",
        "selector_group_id": "access_entrypoint_stability-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:57:08.291Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "account-signup"
          }
        ],
        "assessment_method": {
          "name": "bounded-headless-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f1212e8cd082308cfde3c097bc933c4a4b72046b1f242205c3e27a3b020b3311"
        },
        "determination_bases": [
          {
            "kind": "direct_observation",
            "captures": [
              {
                "retained_capture_digest": "sha256:b2243adadc672d4eef581943613e61f40f28026ca691e5b111943474f845753c",
                "capture_rung": "headless"
              }
            ],
            "artifact_digests": [
              "sha256:10d6251489ef8e18b38bcbd421b48defb457182012fdd9656079478758a3cf6b",
              "sha256:2318895c65ae034cb4323c656c7f3d42d0d83a729c299607c8d6af62592d7ef8",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:894499213df316d146caac686c105fb4547c6fbcdcbbc9e0b9ed3970c93110b9",
              "sha256:976ec89d0515afa7a51ec97662423b299eb147e90c55853c593268c52776b268",
              "sha256:b5a70b279feda1152218c7cd0b6f8e1c2d190d0133dfa157c276378a3bbcc6f6"
            ],
            "locators": [
              {
                "artifact_digest": "sha256:894499213df316d146caac686c105fb4547c6fbcdcbbc9e0b9ed3970c93110b9",
                "start_byte": 716,
                "end_byte": 1051,
                "value_digest": "sha256:d76bff3b37cb950802d1eca12f0c1c495aefd4c181ea0e552baa9583bc2c7611"
              }
            ]
          }
        ],
        "note": "A stable canonical route to begin obtaining access exists at https://resend.com/signup, which provides a 'Create a Resend account' registration form with email/password and social login options."
      },
      {
        "stage": "sign_up",
        "signal_code": "captcha_compatible_access",
        "selector_group_id": "captcha_compatible_access-primary",
        "value": "unknown",
        "observed_at": "2026-08-20T15:57:08.291Z",
        "tested_surfaces": [
          {
            "node_kind": "endpoint",
            "node_id": "registration"
          },
          {
            "node_kind": "resource",
            "node_id": "account-signup"
          }
        ],
        "assessment_method": {
          "name": "bounded-headless-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f1212e8cd082308cfde3c097bc933c4a4b72046b1f242205c3e27a3b020b3311"
        },
        "determination_bases": [],
        "note": "No CAPTCHA challenge is directly observed on the captured sign-up page targets, but the evidence does not explicitly confirm or guarantee the complete absence of CAPTCHA across the entire registration flow."
      },
      {
        "stage": "sign_up",
        "signal_code": "delegated_identity_access",
        "selector_group_id": "delegated_identity_access-primary",
        "value": "partial",
        "observed_at": "2026-08-20T15:56:42.404Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-keys"
          },
          {
            "node_kind": "resource",
            "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:e42ca83633f52a8bab83606f83c47519f6ba1b5cb7dd3091510a8ccf897528eb",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:afeb3aea10cd0c91876ad780611de2294e3b0129c27dfc080a6d463655fde7e1",
              "sha256:f302d53933b1529fef0e9aea21da332bb4ad5a50754fa2d928765098ee9b8ac9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-keys"
            },
            "locators": [
              {
                "artifact_digest": "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
                "start_byte": 11472,
                "end_byte": 12273,
                "value_digest": "sha256:67864368adee6b01b91e388dfb9aca396a16ba72a8a528608ee85be9c8353cab"
              }
            ]
          },
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:7780cd9b2921813c20a6bddbe530ec378bc61e8fd8d1bbf34b0cca902420ffaf",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:bdc74e7d93a8e08b81ea12fa9811cb63867bce7c2479299b6eaaf30736619e09",
              "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0",
              "sha256:ff876842294968516ac0c72bd844aab2d4efe09936605f12f8308cdea58c3aad"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
            },
            "locators": [
              {
                "artifact_digest": "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0",
                "start_byte": 20162,
                "end_byte": 20805,
                "value_digest": "sha256:a1af7d1b821d7bbe4dab27e01ed2bcca13bb821f9c1b466aec4545cf1adf26b9"
              }
            ]
          }
        ],
        "note": "Resend provides scoped, revocable API keys with permissions such as full_access or sending_access that can be created and managed via the dashboard, CLI, or API, but obtaining initial dashboard keys requires manual human copying as key values cannot be viewed or edited after creation."
      },
      {
        "stage": "sign_up",
        "signal_code": "phone_verification_compatible",
        "selector_group_id": "phone_verification_compatible-primary",
        "value": "unknown",
        "observed_at": "2026-08-20T15:57:08.291Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "account-signup"
          }
        ],
        "assessment_method": {
          "name": "bounded-headless-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f1212e8cd082308cfde3c097bc933c4a4b72046b1f242205c3e27a3b020b3311"
        },
        "determination_bases": [],
        "note": "The captured registration form does not mention or display phone verification, but the retained evidence does not explicitly declare whether phone verification is absent, optional, or required later in the flow."
      },
      {
        "stage": "pay",
        "signal_code": "checkout_operability",
        "selector_group_id": "checkout_operability-primary",
        "value": "unknown",
        "observed_at": "2026-08-20T15:55:58.037Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "billing-checkout"
          },
          {
            "node_kind": "resource",
            "node_id": "pricing"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [],
        "note": "The documentation states that users can upgrade, downgrade, or modify their current plan from the Billing page, but the retained evidence does not document a deterministic flow for an agent to construct checkout, hand off approval safely, and resume."
      },
      {
        "stage": "pay",
        "signal_code": "commitment_disclosure",
        "selector_group_id": "commitment_disclosure-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:29.922Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "pricing"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:bc4e32ec89b96e44944f2fbda1a9140760dd477f9a6c758a29b9c4f31bbf45d5",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
              "sha256:de46219baaf32c8bc9649006b7ed2f031dffc5b2118319b5f9abb672b9eb2c7b",
              "sha256:e69929d794c6cc9692a5aa4addd05b229d7b76fbe336eb6f086557addd37b1d9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "pricing"
            },
            "locators": [
              {
                "artifact_digest": "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
                "start_byte": 15223,
                "end_byte": 15920,
                "value_digest": "sha256:88032986d477c8584d6bc2fe7653843ad1822009d13e1a2efb6097c8232bfbb6"
              },
              {
                "artifact_digest": "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
                "start_byte": 4875,
                "end_byte": 5676,
                "value_digest": "sha256:320e7b1e8c574bf6bf6373425392bc8814ef2d589c5eab128ceb7d3c64bb40f2"
              }
            ]
          }
        ],
        "note": "Resend discloses commercial commitments including a Free plan ($0/mo for 3,000 emails/mo), a Pro plan ($20/mo for 50,000 emails/mo with overage at $0.90 / 1,000), a Scale plan ($90/mo for 100,000 emails/mo with overage at $0.90 / 1,000), and pay-as-you-go automation runs ($0.0015 / run)."
      },
      {
        "stage": "pay",
        "signal_code": "payment_authorization",
        "selector_group_id": "payment_authorization-primary",
        "value": "unknown",
        "observed_at": "2026-08-20T15:55:58.037Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "billing-checkout"
          },
          {
            "node_kind": "resource",
            "node_id": "pricing"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [],
        "note": "The evidence notes that users can update payment information by adding or changing credit card details on the Billing page, but it does not detail a rail for scoped delegation or human-confirmed payment authorization."
      },
      {
        "stage": "pay",
        "signal_code": "self_service_purchase",
        "selector_group_id": "self_service_purchase-primary",
        "value": "partial",
        "observed_at": "2026-08-20T15:56:29.922Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "billing-checkout"
          },
          {
            "node_kind": "resource",
            "node_id": "pricing"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:77cf1fa9ccf3a4f67a9a684be25c645cb801b91faebe94c627c9a02470968535",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:56aed1c67b648c2b1e9b088250783cbf1b5e07d764e806191975d94f5d9a16e8",
              "sha256:c11ea20298318e857fb6feb58c8cb529509f0c1548872d1c57eb81d5ce211e72",
              "sha256:c5935373dd1df5edca0f16b820252e77ca7c50ae70eeb51366763c961a10ed81"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "billing-checkout"
            },
            "locators": [
              {
                "artifact_digest": "sha256:56aed1c67b648c2b1e9b088250783cbf1b5e07d764e806191975d94f5d9a16e8",
                "start_byte": 11106,
                "end_byte": 11892,
                "value_digest": "sha256:a768cddd8bce7f218eb3cba6eb93f4ae2fd0134f010355939e1c1562083cb1c1"
              }
            ]
          },
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:bc4e32ec89b96e44944f2fbda1a9140760dd477f9a6c758a29b9c4f31bbf45d5",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
              "sha256:e69929d794c6cc9692a5aa4addd05b229d7b76fbe336eb6f086557addd37b1d9",
              "sha256:f13270410b311b5ab895c181ead958c21a68424c1256cd8a1f29a34729152381"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "pricing"
            },
            "locators": [
              {
                "artifact_digest": "sha256:cb69d6f3c71117e8de1c322332ee2765591bddc80755e62aaeec33c99bd75e74",
                "start_byte": 14440,
                "end_byte": 15222,
                "value_digest": "sha256:e395f17d080c7b2f2731ef609f7917f6f8eba80c8a124608c752e8063bb22143"
              }
            ]
          }
        ],
        "note": "Resend provides a direct self-service path to upgrade or manage subscriptions via the Billing page in Settings, but the top-tier Enterprise plan requires contacting sales (\"Contact us\")."
      },
      {
        "stage": "provision",
        "signal_code": "access_material_delivery",
        "selector_group_id": "access_material_delivery-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:28.136Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-keys"
          },
          {
            "node_kind": "resource",
            "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:7780cd9b2921813c20a6bddbe530ec378bc61e8fd8d1bbf34b0cca902420ffaf",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:bdc74e7d93a8e08b81ea12fa9811cb63867bce7c2479299b6eaaf30736619e09",
              "sha256:d0194a3d44318772242afb54eea5567fb3b89497cf66db7cf88413faa262ea66",
              "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
            },
            "locators": [
              {
                "artifact_digest": "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0",
                "start_byte": 17302,
                "end_byte": 18096,
                "value_digest": "sha256:7d3b1e708c8b40187d5a04a1a81b05d70bf3520a7ab9707854058849c2750ad0"
              }
            ]
          }
        ],
        "note": "Resend documents programmatic delivery of newly created API keys via HTTP POST request responses, returning the secret token string in the JSON payload."
      },
      {
        "stage": "provision",
        "signal_code": "provisioning_completion",
        "selector_group_id": "provisioning_completion-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:30.736Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "send-email"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:f112b334187c5ad2555c97770f3b216fbbd7903b62a328145b8a0beeb1672da5",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:15243b16f730650b8305f6baa863a1080bc37fdc56753898ffbc67f784dca344",
              "sha256:4dc086b51566d75fe13d0c581b64a248378e159b730d5bfa88f411805891880e",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:5d1f3a8ea6f419a4c6084386c40e468a40a9bf9d4b66875afa423c7ddc9153d8"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "send-email"
            },
            "locators": [
              {
                "artifact_digest": "sha256:15243b16f730650b8305f6baa863a1080bc37fdc56753898ffbc67f784dca344",
                "start_byte": 22138,
                "end_byte": 22944,
                "value_digest": "sha256:b26ddfbf13a4617a1028ae8eb4ba0f1c09b6da1e6f0894da13bb857c32b0676e"
              }
            ]
          }
        ],
        "note": "The synchronous POST /emails API endpoint immediately returns a JSON response containing the created email's usable ID upon successful request completion."
      },
      {
        "stage": "provision",
        "signal_code": "provisioning_operability",
        "selector_group_id": "provisioning_operability-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:42.404Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-keys"
          },
          {
            "node_kind": "resource",
            "node_id": "send-email"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:f112b334187c5ad2555c97770f3b216fbbd7903b62a328145b8a0beeb1672da5",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:0103d9d85c2525e59354f3df747d794c3b555074ff195a2bc77c73acc2d29aea",
              "sha256:15243b16f730650b8305f6baa863a1080bc37fdc56753898ffbc67f784dca344",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:5d1f3a8ea6f419a4c6084386c40e468a40a9bf9d4b66875afa423c7ddc9153d8"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "send-email"
            },
            "locators": [
              {
                "artifact_digest": "sha256:15243b16f730650b8305f6baa863a1080bc37fdc56753898ffbc67f784dca344",
                "start_byte": 15470,
                "end_byte": 16247,
                "value_digest": "sha256:b7af892a98071cbce770c9a2a76d2d01c4412466335a81bcd0793d524111dc03"
              }
            ]
          },
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:e42ca83633f52a8bab83606f83c47519f6ba1b5cb7dd3091510a8ccf897528eb",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
              "sha256:4482790a7f4727a2e3878dac1613ff4aeef684022658e9a290caf89995e53584",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:f302d53933b1529fef0e9aea21da332bb4ad5a50754fa2d928765098ee9b8ac9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-keys"
            },
            "locators": [
              {
                "artifact_digest": "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
                "start_byte": 12274,
                "end_byte": 13076,
                "value_digest": "sha256:773922f16c7647cc678607ed1ea685ca8cbe7d193c7473e7e4377be60d5ea795"
              }
            ]
          }
        ],
        "note": "API keys and email sending operations can be programmatically triggered via direct HTTP requests, the Resend CLI, or official API SDKs."
      },
      {
        "stage": "operate",
        "signal_code": "credential_lifecycle",
        "selector_group_id": "credential_lifecycle-primary",
        "value": "partial",
        "observed_at": "2026-08-20T15:56:42.404Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-keys"
          },
          {
            "node_kind": "resource",
            "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:7780cd9b2921813c20a6bddbe530ec378bc61e8fd8d1bbf34b0cca902420ffaf",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:ad17af2908def633f672c54f5da5b7d0b13dc838283d77f7f395052ef62b8ee4",
              "sha256:bdc74e7d93a8e08b81ea12fa9811cb63867bce7c2479299b6eaaf30736619e09",
              "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
            },
            "locators": [
              {
                "artifact_digest": "sha256:fd1f082e5329de55ed0b8fb323c635f91b4b5c074f59084e41c9c734315539d0",
                "start_byte": 15434,
                "end_byte": 16211,
                "value_digest": "sha256:b7af892a98071cbce770c9a2a76d2d01c4412466335a81bcd0793d524111dc03"
              }
            ]
          },
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:e42ca83633f52a8bab83606f83c47519f6ba1b5cb7dd3091510a8ccf897528eb",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:cafa8c6e0b145c42add84903f09b147e46d7af1b9db99b2d9eef910844f91c29",
              "sha256:f302d53933b1529fef0e9aea21da332bb4ad5a50754fa2d928765098ee9b8ac9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-keys"
            },
            "locators": [
              {
                "artifact_digest": "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
                "start_byte": 11472,
                "end_byte": 12273,
                "value_digest": "sha256:67864368adee6b01b91e388dfb9aca396a16ba72a8a528608ee85be9c8353cab"
              },
              {
                "artifact_digest": "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
                "start_byte": 12274,
                "end_byte": 13076,
                "value_digest": "sha256:773922f16c7647cc678607ed1ea685ca8cbe7d193c7473e7e4377be60d5ea795"
              }
            ]
          }
        ],
        "note": "Resend documents that API keys can be created, edited (name, permission, domain), listed, and deleted via the Dashboard, API, or CLI. However, the evidence does not document programmatic secret rotation, compromise recovery, or key value viewing after creation."
      },
      {
        "stage": "operate",
        "signal_code": "failure_contract",
        "selector_group_id": "failure_contract-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:46.957Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-errors"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:67fd5901503dfd79745af40f3ce61e33ab7553161c65a9ef330397abb7ae1afa",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:1d0ff855b9c3b327d80c306b290ef02fadab92faf45246ac22949cdc3b5a583c",
              "sha256:293278b50e70ddda0bb6e70e0c3520fc8db88dd1d638aa0c46c6b8a078976920",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:b0c0cb90d898f4db805b268831123fea6376be93489038a31cb3ac29ced19d26"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-errors"
            },
            "locators": [
              {
                "artifact_digest": "sha256:293278b50e70ddda0bb6e70e0c3520fc8db88dd1d638aa0c46c6b8a078976920",
                "start_byte": 16619,
                "end_byte": 17419,
                "value_digest": "sha256:f83d3f0189d6086e988c5464c9ef3bdf2a4663bdc9b987bd9b94e4db99ca0014"
              },
              {
                "artifact_digest": "sha256:293278b50e70ddda0bb6e70e0c3520fc8db88dd1d638aa0c46c6b8a078976920",
                "start_byte": 21464,
                "end_byte": 22242,
                "value_digest": "sha256:5112eece87cc17834d1d546d76ce9855bb50ba9b4099088c3bd5fc06ceb61345"
              }
            ]
          }
        ],
        "note": "Resend documents HTTP status codes, explicit error types (e.g., validation_error, rate_limit_exceeded), retry actions, idempotency key rules, and rate limit reduction mechanisms."
      },
      {
        "stage": "operate",
        "signal_code": "operation_authentication",
        "selector_group_id": "operation_authentication-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:42.404Z",
        "tested_surfaces": [
          {
            "node_kind": "resource",
            "node_id": "api-keys"
          },
          {
            "node_kind": "resource",
            "node_id": "readiness-9d5754b3e4da24415ca78fa40ecba0b3ca9ce3ef666e7063fd8d1258bdecc351"
          }
        ],
        "assessment_method": {
          "name": "public-http-semantic-assessment",
          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
        },
        "determination_bases": [
          {
            "kind": "explicit_first_party_declaration",
            "captures": [
              {
                "retained_capture_digest": "sha256:e42ca83633f52a8bab83606f83c47519f6ba1b5cb7dd3091510a8ccf897528eb",
                "capture_rung": "http"
              }
            ],
            "artifact_digests": [
              "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
              "sha256:4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
              "sha256:afeb3aea10cd0c91876ad780611de2294e3b0129c27dfc080a6d463655fde7e1",
              "sha256:f302d53933b1529fef0e9aea21da332bb4ad5a50754fa2d928765098ee9b8ac9"
            ],
            "source_surface": {
              "node_kind": "resource",
              "node_id": "api-keys"
            },
            "locators": [
              {
                "artifact_digest": "sha256:055eb8085a363203e0f7d7b2fa12cbea8d0d43ca9f737b35782889f5b86ae764",
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                "end_byte": 12273,
                "value_digest": "sha256:67864368adee6b01b91e388dfb9aca396a16ba72a8a528608ee85be9c8353cab"
              }
            ]
          },
          {
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        ],
        "note": "Resend documents request-time authentication using API keys sent as Bearer tokens in the Authorization header, with options for restricted authority such as sending-only access."
      },
      {
        "stage": "operate",
        "signal_code": "operation_contract",
        "selector_group_id": "operation_contract-primary",
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          {
            "node_kind": "interface",
            "node_id": "email-api"
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        ],
        "assessment_method": {
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        "note": "Resend documents stable operation contracts including HTTP methods, endpoints, required request body parameters, response JSON schemas, and structured error responses across errors and send-email resources."
      },
      {
        "stage": "operate",
        "signal_code": "target_interface_access",
        "selector_group_id": "target_interface_access-primary",
        "value": "yes",
        "observed_at": "2026-08-20T15:56:46.957Z",
        "tested_surfaces": [
          {
            "node_kind": "interface",
            "node_id": "email-api"
          }
        ],
        "assessment_method": {
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          "version": "2026-08-20",
          "method_digest": "sha256:f7c4219d9b75928a6bcff8d125dc30bbc718673e579a66f00d832172e8c9d43d"
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        ],
        "note": "Resend provides stable machine-operable interfaces including an HTTP REST API, CLI, and SDKs (such as Node.js, Python, Go, and Ruby) for both error handling and email sending targets."
      }
    ],
    "revision_digest": "sha256:8442998404f1dce9c1a71a71f2788de80e9d5e233adf5d63e2184e7a86cc3bc7"
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}