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AgentMail agent API

The agent API from AgentMail — 2 operation(s) for agent.

AgentMail agent API is one of 29 APIs that AgentMail publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Agents. The published artifact set on APIs.io includes an OpenAPI specification, an AsyncAPI specification, API documentation, and an API reference.

This API exposes 2 operations across 2 paths, and defines 10 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against 4 base URLs: https://api.agentmail.to, https://x402.api.agentmail.to, https://mpp.api.agentmail.to, https://api.agentmail.eu.

2 operations 2 paths 10 schemas 2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.agentmail.to
Authentication
HTTP Bearer
Resource Areas
1

Authentication & Security 1

AgentMail agent API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (Bearer).

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 2 POST. Each is listed below with its method, path, parameters, and response codes.

agent 2
POST
/v0/agent/sign-up
Sign Up
sign-up body → 200400
POST
/v0/agent/verify
Verify
verify 1 param body → 200

Schemas 10

The contract defines 10 schemas that model the data the API accepts and returns. The most detailed are type__ValidationErrorResponse (6 properties), type_agent_AgentSignupRequest (4 properties), type_agent_AgentSignupResponse (3 properties), type_agent_AgentVerifyRequest (1 property). Each schema is shown below with its type and property counts.

type__ErrorFix
string
The concrete next action that resolves the error.
type_agent_AgentVerifyResponse
object
Response after successful agent verification.
1 property 1 required
type__ErrorMessage
string
Error message.
type__ValidationErrorResponse
object
6 properties 2 required
type__ErrorCode
string
Stable, machine-readable error code in snakecase (for example, notfound or missingpermission). Branch on this rather than the message text.
type_agent_AgentSignupRequest
object
Request body to sign up an agent.
4 properties 2 required
type__ErrorName
string
Name of error.
type_agent_AgentSignupResponse
object
Response after successful agent sign-up.
3 properties 3 required
type_agent_AgentVerifyRequest
object
Request body to verify an agent with an OTP code.
1 property 1 required
type__ErrorDocs
string
Link to the error reference entry for this code.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

agentmail-agent-api-openapi.yml Raw ↑

Other APIs AgentMail publishes across the network.

AgentMail api-keys API
AgentMail auth API
AgentMail domains API
AgentMail drafts API
AgentMail inboxes > api-keys API
AgentMail inboxes API
AgentMail inboxes > drafts API
AgentMail inboxes > events API
AgentMail inboxes > lists API
AgentMail inboxes > messages API
AgentMail inboxes > metrics API
AgentMail inboxes > threads API
Where this information came from

This is an independent, third-party profile of AgentMail agent API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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