Evidence
observed · not disputed
Coverage
complete · 16/16 graded0/5 barrier checks verified
Freshness
fresh
Last tested
Revision
sha256:574d1fbcd53d…

Agent report card

Can an agent use Vercel REST API through Deployment operations?

Grade B: Machine credentials exist but require manual copying, broad authority, or weak lifecycle support.

Vercel / active

Agent ReadinessBLimited

Five-stage assessment

Where agent autonomy holds and where it breaks

Five states · each from its own evidence · lifecycle order, not a journey
  1. EvaluateReady
  2. Sign upLimited
  3. PayReady
  4. ProvisionLimited
  5. OperateLimited
  1. 01

    Evaluate

    Ready

    The exact service and stable evaluation or access entrypoints are publicly discoverable.

    Applicable terms are stable, readable, retrievable, and materially complete.

    Eligibility conditions and required inputs are explicit and decidable.

    Price or no-charge status, variables, currency, and material conditions are explicit.

    Evidence and actions6 signals

    Can an agent decide every material eligibility condition before commitment?

    supported: fresh

    Eligibility conditions and required inputs are explicit and decidable.

    Vercel's Terms of Service explicitly state age and eligibility conditions, requiring users to be at least 16 years of age and to use or access services through an electronic device controlled by the user.

    eligibility_decidability: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can an agent estimate cost or confirm no-charge status before commitment?

    supported: fresh

    Price or no-charge status, variables, currency, and material conditions are explicit.

    Vercel's pricing page discloses plan options including Hobby ($0/mo) and Pro ($20/mo), with explicit usage rates, included credits, variable resource limits, and currency in USD.

    pricing_decidability: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can an agent find the exact service and its stable entrypoints?

    supported: fresh

    The exact service and stable evaluation or access entrypoints are publicly discoverable.

    The Vercel REST API documentation explicitly provides the service details, HTTP/1 and HTTP/2 SSL architecture support, and the base entrypoint URL at https://api.vercel.com.

    service_discovery: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Are verified structured discovery artifacts available?

    missing: unknown

    Current admissible evidence does not resolve this finding.

    structured_evaluation_discovery: Unknown

    Can an agent retrieve and understand the applicable commitment terms?

    supported: fresh

    Applicable terms are stable, readable, retrievable, and materially complete.

    Vercel's Terms of Service agreement is retrievable, readable, and materially complete, covering applicable terms, schedule additions, and commitments for using Vercel's Services.

    terms_access: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Does the vendor deliberately describe access for web agents?

    missing: unknown

    Current admissible evidence does not resolve this finding.

    verified_web_agent_access: Unknown

  2. 02

    Sign up

    Limited

    Machine credentials exist but require manual copying, broad authority, or weak lifecycle support.

    A stable canonical route begins the required access bootstrap.

    Evidence and actions5 signals

    Can an agent operate the access controls and safe handoffs deterministically?

    supported: fresh

    Current admissible evidence does not resolve this finding.

    The sign-up page displays options to continue with Google, GitHub, ChatGPT, Apple, or Email. Current admissible evidence does not resolve whether the access controls, navigation, and handoffs are fully machine-operable.

    access_control_operability: Unknown: tested 20 Aug

    Method bounded-headless-semantic-assessment 2026-08-20

    Is there a stable route to begin obtaining service access?

    supported: fresh

    A stable canonical route begins the required access bootstrap.

    A stable sign-up page at https://vercel.com/signup presents options to continue with third-party providers or email to begin service access.

    access_entrypoint_stability: Ready: tested 20 Aug

    Method bounded-headless-semantic-assessment 2026-08-20

    Can an agent obtain access without an unsupported CAPTCHA boundary?

    supported: fresh

    Current admissible evidence does not resolve this finding.

    The captured sign-up pages display third-party login and email authentication options. Admissible evidence does not explicitly establish whether CAPTCHA challenges are present or if a supported alternative exists.

    captcha_compatible_access: Unknown: tested 20 Aug

    Method bounded-headless-semantic-assessment 2026-08-20

    Can an agent obtain scoped, revocable authority for this service?

    supported: fresh

    Machine credentials exist but require manual copying, broad authority, or weak lifecycle support.

    Vercel API access tokens can be created in personal account settings or via the CLI and scoped to user accounts, teams, or single projects. However, newly created tokens are shown in plaintext only once and require manual copying and storage into secret managers or environment variables.

    delegated_identity_access: Limited: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can required phone verification be completed through a supported boundary?

    supported: fresh

    Current admissible evidence does not resolve this finding.

    The sign-up capture presents third-party and email login options, but current admissible evidence does not explicitly document whether phone verification is required, absent, or supported through a resumable boundary.

    phone_verification_compatible: Unknown: tested 20 Aug

    Method bounded-headless-semantic-assessment 2026-08-20

    What would improve this stage

    • Provide scoped delegated authorization with consent, revocation, and deterministic resumption.
  3. 03

    Pay

    Ready

    Charge or no-charge status, currency, recurrence, and material conditions are disclosed.

    A documented direct purchase path reaches paid access without a vendor decision point.

    Evidence and actions4 signals

    Can an agent construct checkout, hand off approval safely, and resume?

    supported: fresh

    Current admissible evidence does not resolve this finding.

    The retained evidence describes Pro plan checkout domain claims and payment method settings, but does not document an API, protocol, or web flow for deterministic checkout construction, approval handoff, and resumption.

    checkout_operability: Unknown: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Is the exact commercial commitment disclosed before authorization?

    supported: fresh

    Charge or no-charge status, currency, recurrence, and material conditions are disclosed.

    Vercel discloses that the Pro plan payments are billed at the beginning of each billing cycle in USD (if converted by the card provider) via Credit/Debit card.

    commitment_disclosure: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can payment be authorized within scoped agent or explicit human authority?

    supported: fresh

    Current admissible evidence does not resolve this finding.

    The documentation mentions automatic credit card charges upon invoice issuance and adding new cards in billing settings, but does not document scoped delegation rails or human-confirmed payment authorization protocols with receipts.

    payment_authorization: Unknown: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Is a direct self-service path to paid access documented?

    supported: fresh

    A documented direct purchase path reaches paid access without a vendor decision point.

    A direct self-service upgrade path is documented where new subscriptions can claim a domain at checkout during the upgrade or add a payment method via team settings under Billing.

    self_service_purchase: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

  4. 04

    Provision

    Limited

    Delivery needs additional human transfer or has weak scope or lifecycle semantics.

    Completion is observable, but an asynchronous path omits a material terminal, bound, or reconciliation property.

    Provisioning is machine-triggerable or follows deterministically from an allowed handoff.

    Evidence and actions3 signals

    Can usable access material be delivered securely to an authorized agent?

    supported: fresh

    Delivery needs additional human transfer or has weak scope or lifecycle semantics.

    Tokens can be created via the account settings page or using the `vercel tokens` CLI command. The CLI displays the plaintext token value only once upon creation, requiring manual copy and storage in a secret manager or environment variable.

    access_material_delivery: Limited: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can an agent determine successful provisioning completion and reconcile asynchronous failure?

    supported: fresh

    Completion is observable, but an asynchronous path omits a material terminal, bound, or reconciliation property.

    Deployment creation returns an object and exposes pollable progress and terminal states, but the retained evidence does not establish a documented completion bound.

    provisioning_completion: Limited: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can provisioning be initiated within supported agent authority?

    supported: fresh

    Provisioning is machine-triggerable or follows deterministically from an allowed handoff.

    Deployment provisioning can be programmatically initiated via the Vercel REST API endpoint `POST https://api.vercel.com/v13/deployments` by passing an access token in the Authorization header along with deployment file configuration in the JSON request body.

    provisioning_operability: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    What would improve this stage

    • Deliver scoped access material through a secure documented machine-usable flow.
    • Expose bounded machine-readable terminal status and reconciliation semantics.
  5. 05

    Operate

    Limited

    Safe failure handling is documented only partially.

    Only part of the credential lifecycle is agent-operable.

    Every essential target has a stable documented agent-usable interface alternative.

    Request-time authentication is documented and usable under scoped agent authority.

    Essential operations have stable readable request, response, and effect semantics.

    Evidence and actions6 signals

    Is an agent-native protocol interface verified against the essential targets?

    missing: unknown

    Current admissible evidence does not resolve this finding.

    agent_protocol_interface: Unknown

    Can an agent manage credential expiry, rotation, revocation, compromise, and recovery?

    supported: fresh

    Only part of the credential lifecycle is agent-operable.

    First-party documentation states that Vercel access tokens can be created inside account settings or via the Vercel CLI (`vercel tokens add`), listed, and revoked/removed using `vercel tokens rm <token-id>`. However, evidence does not document full agent-executable automated credential rotation, compromise handling, or recovery semantics.

    credential_lifecycle: Limited: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can an agent handle applicable failure modes safely?

    supported: fresh

    Safe failure handling is documented only partially.

    Documentation establishes generic error responses (such as `forbidden`, `rate_limited`, `bad_request`, `internal_server_error`, and `not_found`) along with rate limit headers and error payloads. However, safe failure handling semantics such as explicit request idempotency, retry procedures, cancellation, and reconciliation are not fully documented in the evidence.

    failure_contract: Limited: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Can an agent authenticate service operations with scoped authority?

    supported: fresh

    Request-time authentication is documented and usable under scoped agent authority.

    Request-time authentication is documented using Vercel Access Tokens passed via the `Authorization: Bearer TOKEN` HTTP header, which can be scoped to personal accounts, specific teams, or individual projects.

    operation_authentication: Ready: tested 20 Aug

    Method public-http-semantic-assessment 2026-08-20

    Are essential operation inputs, outputs, and effects stable and decidable?

    supported: fresh

    Essential operations have stable readable request, response, and effect semantics.

    Essential endpoints and error payloads are documented across all evaluated targets. For instance, creating a deployment via POST to `/v13/deployments` specifies HTTP methods, query parameters (`teamId`, `forceNew`), JSON body fields (`files`, `deploymentId`, `customEnvironmentSlugOrId`), response structures (`id`, `readyState`, `target`), and state transition flow (`QUEUED` → `INITIALIZING` → `BUILDING` → `READY`/`ERROR`).

    operation_contract: Ready: tested 20 Aug

    • deployment-api

    Method public-http-semantic-assessment 2026-08-20

    Can an agent perform every essential assessment target through a usable interface?

    supported: fresh

    Every essential target has a stable documented agent-usable interface alternative.

    Every essential target is accessible through agent-usable machine interfaces, specifically the Vercel REST API (`https://api.vercel.com`) and the Vercel CLI.

    target_interface_access: Ready: tested 20 Aug

    • deployment-api

    Method public-http-semantic-assessment 2026-08-20

    What would improve this stage

    • Document applicable structured errors, retry, cancellation, and reconciliation semantics.
    • Provide scoped expiry, rotation, revocation, compromise, and recovery operations.

What works

  • Evaluate: The exact service and stable evaluation or access entrypoints are publicly discoverable.
  • Pay: Charge or no-charge status, currency, recurrence, and material conditions are disclosed.

What blocks agents

  • Sign up: Machine credentials exist but require manual copying, broad authority, or weak lifecycle support.
  • Provision: Delivery needs additional human transfer or has weak scope or lifecycle semantics.
  • Operate: Safe failure handling is documented only partially.

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Profile
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Projection
sha256:44ea9638480511a23bf110de9baf35b88bb621719ddc9c07103de5eee9bffff1
Policy
service-use-2026-08-20-public-evidence-r9 · sha256:57bf95fd6d0fe6fe9173a68b60e8d8dc2179b357c88ff4349675a72d0e1d4139