Agent Manifest

Agent Manifest provides the Agent Manifest Protocol, a specification, registry, validator, and CLI tools for autonomous API discovery. It offers a well‑known .well‑known/agent-manifest.json endpoint, a public registry of APIs, and tools for publishing and validating manifests. The platform includes documentation, SDKs, and examples to help developers integrate the protocol into their services.

Agent Manifest is listed with 1 API on the APIs.io network. Tagged areas include Protocol, Registry, Validation, and Open Source.

The Agent Manifest catalog on APIs.io includes 1 Spectral governance ruleset.

🌐 Visit website 📡 Profile data on GitHub

9.5/100 minimal ▬ flat Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

1 API

Protocol Registry Validation Open Source

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 9.5/100 · minimal

Contract Quality 2.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.2 / 10

Discoverability 3.8 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 9.4 — up to +22.7 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/agent-manifest-com/apis.yml: open an issue on github.com/api-evangelist/agent-manifest-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (flavored)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (documented)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Agent Manifest API

Agent Manifest API as documented publicly: 2 operations. Contract generated from the documentation by API Evangelist (2026-11-01); not the provider's own document.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Agent Manifest API Rules

8 rules · 6 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Agent Manifest Com Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Vocabulary

Vocabulary

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agent-manifest-com
name: Agent Manifest
description: Agent Manifest provides the Agent Manifest Protocol, a specification, registry, validator, and CLI tools for
  autonomous API discovery. It offers a well‑known .well‑known/agent-manifest.json endpoint, a public registry of APIs, and
  tools for publishing and validating manifests. The platform includes documentation, SDKs, and examples to help developers
  integrate the protocol into their services.
url: https://artifacts.apis.io/agent-manifest-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Protocol
- Registry
- Validation
- Open Source
tags_raw:
- API
- Protocol
- Registry
- Validation
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/agent-manifest-com-rules.yml
- type: Vocabulary
  url: vocabulary/agent-manifest-com-vocabulary.yml
- type: Conformance
  url: conformance/agent-manifest-com-conformance.yml
- type: LLMsTxt
  url: llms/agent-manifest-com-llms.txt
- type: AgentCard
  url: a2a/agent-manifest-com-a2a.yml
- type: WellKnown
  url: well-known/agent-manifest-com-well-known.yml
- type: Hosts
  url: hosts/agent-manifest-com-hosts.yml
- type: Vendors
  url: vendors/agent-manifest-com-vendors.yml
- type: GitHubOrganization
  url: https://github.com/AMProtocol
- type: DomainSecurity
  url: security/agent-manifest-com-domain-security.yml
- type: Website
  url: https://agent-manifest.com/
apis:
- aid: agent-manifest-com:agent-manifest-com-api
  name: Agent Manifest API
  description: 'Agent Manifest API as documented publicly: 2 operations. Contract generated from the documentation by API
    Evangelist (2026-11-01); not the provider''s own document.'
  humanURL: https://api.agent-manifest.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/agent-manifest-com-openapi-generated.yml
    x-provenance: generated
x-coverage:
  state: none
  reason: no-developer-program
  detail: No public API specification or documentation was found on the provider's API hosts.
  evidence:
  - url: https://api.agent-manifest.com/openapi.json
    status: 404
  checked: '2026-11-01'
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Agent Manifest API — frequently asked questions

Does Agent Manifest have an API?

Yes. APIs.io lists 1 API from Agent Manifest, including Agent Manifest API.

Is there an OpenAPI specification for the Agent Manifest API?

Yes. APIs.io indexes 1 OpenAPI specification for Agent Manifest, each linked for download from this page.

Is the Agent Manifest API ready for AI agents?

Agent Manifest has a Kin Score of 9.5 out of 100 (minimal) and an Agent Readiness score of 20.8 (agent-aware), scored by API Evangelist on 2026-11-02.

Work with this as data

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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