Can an agent send an email with Nitrosend email?

A person has to keep renewing, replacing or revoking its access.

observedProbed 29 Octrevision sha256:f4fb070faf16…

Who does each step

how grades work →

Whether the agent handles it alone or a person has to step in.

01
Discover
Machine
The vendor's machine-readable docs show the agent where and how to call this job.
02
Access
Machine
The vendor lets the agent get its own credential with no person.
03
Onboard
Machine
The agent can register itself with no person.
04
Pay
Not applicable
Nothing to pay for the job.
05
Confirm
Machine
The response or specification defines errors the agent can distinguish from success.
06
Sustain
Workaround · recurring
You renew the agent's access each time it expires.

A person again and again, at Sustain: renewing, replacing or revoking its access.

To remove these handoffs: provide key management or OAuth refresh and revocation so the agent can maintain its own access.

Agent surfaces

4 kinds · 8 entries

For agents

api.nitrosend.com3 more

nitrosend.com/llms.txt api.nitrosend.com/llms.txt docs.nitrosend.com/llms.txt

Names the job's endpoint

API

api.nitrosend.com

Names the job's endpoint

OAuth

api.nitrosend.com1 more

api.nitrosend.com/mcp

protected resource · authorization server

Skills

nitrosend.com/SKILL.md

skills index

The probe

29 Oct 2026 · 13:39 UTC · 79.07 s

Each request it sent and what came back; the descriptors it read, counted, with what they named.

Discover32 descriptor reads11 facts

Found: For agentsnitrosend.com/llms.txtOAuthapi.nitrosend.com/mcpOAuthapi.nitrosend.comOAuthapi.nitrosend.comOAuthapi.nitrosend.com/mcpOAuthapi.nitrosend.comFor agentsapi.nitrosend.com/llms.txtOAuthapi.nitrosend.comFor agentsdocs.nitrosend.com/llms.txtOAuthapi.nitrosend.comSkillsnitrosend.com/SKILL.md
From: nitrosend.com/llms.txt · api.nitrosend.com/.well-known/oauth-protected-resource/mcp · api.nitrosend.com/.well-known/oauth-authorization-server · api.nitrosend.com/.well-known/oauth-protected-resource · api.nitrosend.com/llms.txt · api.nitrosend.com/openapi.json · docs.nitrosend.com/llms.txt · nitrosend.com/.well-known/agent-skills/index.json
This endpoint: api.nitrosend.com is named by a descriptor it read

Job requestPOST api.nitrosend.com/v1/my/messages40181 ms

Request: POST https://api.nitrosend.com/v1/my/messages
Response: 401 · application/json · 55 bytes
Body: sha256:0dbcb5eb322b2d739bab04213080391b1bfd9012c8389a1bfeb0f9ca7d8b3e74
Exchange: sha256:f23807025bcb3af80b363e4b90d7c866154e3163c5e98f5d9490682641dfba80

Resource metadataGET api.nitrosend.com/.well-known/oauth-protected-resource/v1/my/messages40458 ms

Request: GET https://api.nitrosend.com/.well-known/oauth-protected-resource/v1/my/messages
Response: 404 · application/json · 34 bytes
Body: sha256:3b830281ce3538e005214b1c9798dc7f146e7319ac5c8d5a55ac1f002285e8a2
Exchange: sha256:fa06e90aa88b369abcf09c406a3b22a6aa2e8d800abe40f65af97cb9d85093fc

Resource metadataGET api.nitrosend.com/.well-known/oauth-protected-resource20089 ms

Request: GET https://api.nitrosend.com/.well-known/oauth-protected-resource
Response: 200 · application/json · 239 bytes
Body: sha256:b08287a2e0972d1528bbe77d16c4705aac5943df80ea78b1cde4d87baa343960
Exchange: sha256:86a2e3f56f53112a5a3324e56f627f1ca1a77e2951799b14fed18afbdc3b8137

Authorization serverGET api.nitrosend.com/.well-known/oauth-authorization-server200100 ms

Request: GET https://api.nitrosend.com/.well-known/oauth-authorization-server
Response: 200 · application/json · 603 bytes
Body: sha256:fc3a57e038f33eb41d8abee0639a963351be621978550761e007afde62fb7c77
Exchange: sha256:3ac6256aba5155083ceb81972ec819249abcd32aaf610e912a97ddbed2ce48d3

AuthorizationGET api.nitrosend.com/oauth/authorize?response_type=code&client_id=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fclient.json&redirect_uri=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fcallback&state=b4b12eb1a3d2b790912eac748cf2028c&code_challenge=pGDgN9UP6aOO_IphlBa9Eh53CHd2BMKYAVFdreCC04g&code_challenge_method=S256&resource=https%3A%2F%2Fapi.nitrosend.com%2Fv1%2Fmy%2Fmessages&scope=mcp302493 ms

Request: GET https://api.nitrosend.com/oauth/authorize?response_type=code&client_id=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fclient.json&redirect_uri=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fcallback&state=b4b12eb1a3d2b790912eac748cf2028c&code_challenge=pGDgN9UP6aOO_IphlBa9Eh53CHd2BMKYAVFdreCC04g&code_challenge_method=S256&resource=https%3A%2F%2Fapi.nitrosend.com%2Fv1%2Fmy%2Fmessages&scope=mcp
Response: 302 · text/html · 0 bytes
Body: sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Exchange: sha256:e223fba0782ab7fd417a12eba9c814e92a2437e6349d30bcf9f5916de2d682d1

Job requestsession openedPOST api.nitrosend.com/mcp40168 ms

Request: POST https://api.nitrosend.com/mcp
Response: 401 · application/json · 205 bytes
Body: sha256:5d91997fd496b9833e3bec0783837e6e28986b26c1e6d0d23d9d5635f15eb744
Exchange: sha256:b71d361062ed5e176eb0243c864203ac66e06dd5b576fe68d30d11cd4ef3d151

Resource metadataGET api.nitrosend.com/.well-known/oauth-protected-resource/mcp200102 ms

Request: GET https://api.nitrosend.com/.well-known/oauth-protected-resource/mcp
Response: 200 · application/json · 239 bytes
Body: sha256:b08287a2e0972d1528bbe77d16c4705aac5943df80ea78b1cde4d87baa343960
Exchange: sha256:c7972a0b66ed64fafbedae899f53b2ddbc964f4b1b8d05d68517b641fd3ff769

Authorization serverGET api.nitrosend.com/.well-known/oauth-authorization-server20068 ms

Request: GET https://api.nitrosend.com/.well-known/oauth-authorization-server
Response: 200 · application/json · 603 bytes
Body: sha256:fc3a57e038f33eb41d8abee0639a963351be621978550761e007afde62fb7c77
Exchange: sha256:7bf1acde8509a6b557fd0b0fff816fa5529bda87275719e86a1dfd9da247099b

Request: GET https://api.nitrosend.com/oauth/authorize?response_type=code&client_id=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fclient.json&redirect_uri=https%3A%2F%2Fapi.sourcey.com%2F.well-known%2Fagent-readiness%2Fcallback&state=b4b12eb1a3d2b790912eac748cf2028c&code_challenge=pGDgN9UP6aOO_IphlBa9Eh53CHd2BMKYAVFdreCC04g&code_challenge_method=S256&resource=https%3A%2F%2Fapi.nitrosend.com%2Fmcp&scope=mcp
Response: 302 · text/html · 0 bytes
Body: sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Exchange: sha256:02be235dfaf1e78783fe9ad80b0492ba132f20f3255e7131e302bea634f1c9a3

The grade’s badge

One image that keeps itself current, linking here.

[![agent grade](https://sourcey.com/badges/agent-readiness/arp_01m63y56mqkanmz455jcpznd52.svg)](https://sourcey.com/c/nitrosend/agent-readiness/nitrosend-email/email-send)

Improve the report

Correct it, probe it again, or improve the path.

Report outdated evidence Request reassessment Verify the job

Profile: arp_01m63y56mqkanmz455jcpznd52
Revision: sha256:f4fb070faf16e7246e8330dc3bf598cef2a38bbbfc3b0b63949e6880dab48568
Projection: sha256:0b9a24cd778bf986ccc65006e868d8753da4c36363695bc71a269dda652518bc
Policy: kind-2026-10-12.2 · sha256:b612172aad277b54461de84e006815126f2df566563954b02f4432a39cad89ac
Base release: sha256:a3fa2ec27f4f94ecb2ec6fc78945c486fa3455a5ddc45561909cd67799240b5b

A report or a reassessment request names this profile, its revision and its projection. How report cards are assessed →View the exact declaration

Who does each step

Discover

Access

Onboard

Pay

Confirm

Sustain

Agent surfaces

The probe

The grade’s badge

Correct it, probe it again, or improve the path.