Attestari

Attestari examines the published artifact of MCP servers and agent tooling, not the repository, publishes the file, line and bytes behind every finding, and refuses to grade what it could not examine. The verdict is public so anyone can check it. No publisher pays.

Attestari publishes 4 API contracts indexed on the APIs.io network, including Health API, Manifest API, Remote API, and 1 more. Tagged areas include Artificial Intelligence, MCP, Security, Compliance, and Open Source.

Attestari’s developer surface includes pricing, signup flow, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

33.4/100 thin Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessFreemiumOpen⚡ Free to try

2 published contracts

Artificial Intelligence MCP Security Compliance Open Source

Kin Score

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

Composite quality — 33.4/100 · thin

Contract Quality 7.9 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 13.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.5 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.0 / 15

Agent readiness — 23/100 · 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

10 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 0.0 — up to +20.0 composite points
Contract Quality scores 37.3 — up to +15.7 composite points
Operational Transparency scores 0.0 — up to +13.0 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/attestari-ai/apis.yml: open an issue on github.com/api-evangelist/attestari-ai 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Attestari Health API

The Health API from Attestari — 1 operation(s) for health.

Attestari Manifest API

The Manifest API from Attestari — 2 operation(s) for manifest.

Attestari Remote API

The Remote API from Attestari — 1 operation(s) for remote.

Attestari Verdict API

The Verdict API from Attestari — 3 operation(s) for verdict.

Pricing Plans 1

Published pricing tiers and plan structures.

Attestari Ai Plans Pricing

13 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Attestari Ai Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Attestari Ai Authentication

0 schemes

SECURITY

Attestari Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Attestari Ai Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

PrivacyPolicy

TermsOfService

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: attestari-ai
name: Attestari
description: Attestari examines the published artifact of MCP servers and agent tooling, not the repository, publishes the
  file, line and bytes behind every finding, and refuses to grade what it could not examine. The verdict is public so anyone
  can check it. No publisher pays.
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Open access
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://attestari.ai/opengraph-image?f0b46a0dce1d99e8
url: https://artifacts.apis.io/attestari-ai/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-02 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-02'
modified: '2026-11-02'
tags:
- Artificial Intelligence
- MCP
- Security
- Compliance
- Open Source
tags_raw:
- AI
- MCP
- Security
- Compliance
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/attestari-ai-plans-pricing.yml
- type: Conformance
  url: conformance/attestari-ai-conformance.yml
- type: Hosts
  url: hosts/attestari-ai-hosts.yml
- type: Vendors
  url: vendors/attestari-ai-vendors.yml
- type: DomainSecurity
  url: security/attestari-ai-domain-security.yml
- type: Website
  url: https://attestari.ai/
- type: Pricing
  url: https://attestari.ai/pricing
- type: PrivacyPolicy
  url: https://attestari.ai/privacy
- type: TermsOfService
  url: https://attestari.ai/terms
- type: SignUp
  url: https://app.attestari.ai/signup
- type: Login
  url: https://app.attestari.ai/sign-in
apis:
- aid: attestari-ai:attestari-ai-health-api
  name: Attestari Health API
  description: The Health API from Attestari — 1 operation(s) for health.
  humanURL: https://api.attestari.ai/v1
  baseURL: https://api.attestari.ai/v1
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/attestari-ai-health-api-openapi.yml
- aid: attestari-ai:attestari-ai-manifest-api
  name: Attestari Manifest API
  description: The Manifest API from Attestari — 2 operation(s) for manifest.
  humanURL: https://api.attestari.ai/v1
  baseURL: https://api.attestari.ai/v1
  tags:
  - Manifests
  tags_raw:
  - Manifest
  properties:
  - type: OpenAPI
    url: openapi/attestari-ai-manifest-api-openapi.yml
- aid: attestari-ai:attestari-ai-remote-api
  name: Attestari Remote API
  description: The Remote API from Attestari — 1 operation(s) for remote.
  humanURL: https://api.attestari.ai/v1
  baseURL: https://api.attestari.ai/v1
  tags:
  - Remote
  properties:
  - type: OpenAPI
    url: openapi/attestari-ai-remote-api-openapi.yml
- aid: attestari-ai:attestari-ai-verdict-api
  name: Attestari Verdict API
  description: The Verdict API from Attestari — 3 operation(s) for verdict.
  humanURL: https://api.attestari.ai/v1
  baseURL: https://api.attestari.ai/v1
  tags:
  - Verdict
  properties:
  - type: OpenAPI
    url: openapi/attestari-ai-verdict-api-openapi.yml
x-enrichment:
  date: '2026-11-02'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Attestari API — frequently asked questions

Does Attestari have an API?

Yes. APIs.io lists 4 APIs from Attestari, including Attestari Health API, Attestari Manifest API and Attestari Remote API, and 1 more.

Is there an OpenAPI specification for the Attestari API?

Yes. APIs.io indexes 4 OpenAPI specifications for Attestari, each linked for download from this page.

How do I authenticate with the Attestari API?

Attestari documents its authentication (0 schemes). The details are profiled on APIs.io as Attestari Ai Authentication.

How much does the Attestari API cost?

APIs.io lists 13 pricing plans for Attestari, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Attestari API ready for AI agents?

Attestari has a Kin Score of 33.4 out of 100 (thin) and an Agent Readiness score of 22.9 (agent-aware), scored by API Evangelist on 2026-11-02.

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find_providersBrowse and filter every provider in the catalog.
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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