AnchorRegistry

AnchorRegistry™ — The open provenance layer for the agentic economy. AnchorRegistry offers an immutable provenance infrastructure that lets creators, agents, and developers anchor their work on-chain, verify AR‑IDs, and maintain permanent public fingerprints. The platform supports a wide range of artifact types, from code and data to media and reports, and provides tools for pricing, settlement on Base L2, and integration via API for autonomous agents.

AnchorRegistry publishes 5 API contracts indexed on the APIs.io network, including Account API, Discovery API, Register API, and 2 more. Tagged areas include Provenance, Onchain, Artificial Intelligence, Data, and Artifacts.

The AnchorRegistry catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

AnchorRegistry’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.8/100 developing Agent 32/100 agent ready Heartbeat 37/100 slowing Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessPaidOpen

1 published contract 1 MCP Servers 1 Agent Skills

Provenance Onchain Artificial Intelligence Data Artifacts

Kin Score

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

Composite quality — 47.8/100 · developing

Contract Quality 11.3 / 21

Developer Ergonomics 8.8 / 17

Access Clarity 11.2 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 5 / 5

Well-Known Catalog 4 / 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):

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
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

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

Operational Transparency scores 5.3 — up to +12.3 composite points
Contract Quality scores 53.3 — up to +11.7 composite points
Developer Ergonomics scores 51.7 — up to +9.7 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/anchorregistry-ai/apis.yml: open an issue on github.com/api-evangelist/anchorregistry-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 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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

AnchorRegistry Account API

The account API from AnchorRegistry — 5 operation(s) for account.

AnchorRegistry Discovery API

The discovery API from AnchorRegistry — 1 operation(s) for discovery.

AnchorRegistry Register API

The register API from AnchorRegistry — 9 operation(s) for register.

AnchorRegistry System API

The system API from AnchorRegistry — 3 operation(s) for system.

AnchorRegistry Verify API

The verify API from AnchorRegistry — 3 operation(s) for verify.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

AnchorRegistry MCP Server

Remote MCP server at mcp.anchorregistry.ai.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

verify-arid

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Anchorregistry Ai Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Anchorregistry Ai Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Anchorregistry Ai Context

18 classes · 139 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

AnchorRegistry API Rules

12 rules · 8 errors 2 warnings 2 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

AccountRegistrationRequest

65 properties

JSON SCHEMA

AccountRequest

4 properties

JSON SCHEMA

PendingRegistrationRequest

84 properties

JSON SCHEMA

RetractionRequest

5 properties

JSON SCHEMA

StatusResponse

7 properties

JSON SCHEMA

TreeResponse

5 properties

JSON SCHEMA

Security Posture 2

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

Anchorregistry Ai Authentication

0 schemes

SECURITY

Anchorregistry Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Anchorregistry Ai Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Anchorregistry Ai Agentic Access

21 operations · 11 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

TermsOfService

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: anchorregistry-ai
name: AnchorRegistry
description: AnchorRegistry™ — The open provenance layer for the agentic economy. AnchorRegistry offers an immutable provenance
  infrastructure that lets creators, agents, and developers anchor their work on-chain, verify AR‑IDs, and maintain permanent
  public fingerprints. The platform supports a wide range of artifact types, from code and data to media and reports, and
  provides tools for pricing, settlement on Base L2, and integration via API for autonomous agents.
accessModel:
  pricing: paid
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Paid · Open access
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://anchorregistry.ai/_next/image?url=%2Fanchor.png&w=96&q=75
url: https://artifacts.apis.io/anchorregistry-ai/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)
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- Provenance
- Onchain
- Artificial Intelligence
- Data
- Artifacts
tags_raw:
- Provenance
- On-chain
- AI
- Data
- Artifacts
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/anchorregistry-ai-agentic-access.yml
- type: Plans
  url: plans/anchorregistry-ai-plans-pricing.yml
- type: Spectral
  url: rules/anchorregistry-ai-rules.yml
- type: JSONLD
  url: json-ld/anchorregistry-ai-context.jsonld
- type: Vocabulary
  url: vocabulary/anchorregistry-ai-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/anchorregistry-ai-data-model.yml
- type: ErrorCatalog
  url: errors/anchorregistry-ai-problem-types.yml
- type: Conformance
  url: conformance/anchorregistry-ai-conformance.yml
- type: LLMsTxt
  url: llms/anchorregistry-ai-llms.txt
- type: ToolCrosswalk
  url: mcp/anchorregistry-ai-tool-crosswalk.yml
- type: MCPServer
  url: mcp/anchorregistry-ai-mcp.yml
- type: WellKnown
  url: well-known/anchorregistry-ai-well-known.yml
- type: Hosts
  url: hosts/anchorregistry-ai-hosts.yml
- type: Vendors
  url: vendors/anchorregistry-ai-vendors.yml
- type: SDKs
  url: packages/anchorregistry-ai-packages.yml
- type: Packages
  url: packages/anchorregistry-ai-packages.yml
- type: DomainSecurity
  url: security/anchorregistry-ai-domain-security.yml
- type: Website
  url: https://anchorregistry.ai/
- type: DeveloperPortal
  url: https://anchorregistry.ai/developers
- type: Documentation
  url: https://anchorregistry.ai/docs
- type: APIReference
  url: https://api.anchorregistry.ai/docs
- type: GettingStarted
  url: https://anchorregistry.ai/docs
- type: Pricing
  url: https://anchorregistry.ai/#pricing
- type: SignUp
  url: https://anchorregistry.ai/register
- type: TermsOfService
  url: https://anchorregistry.ai/terms
- type: GitHubOrganization
  url: https://github.com/AnchorRegistry/ar-mcp
apis:
- aid: anchorregistry-ai:anchorregistry-ai-account-api
  name: AnchorRegistry Account API
  description: The account API from AnchorRegistry — 5 operation(s) for account.
  humanURL: https://anchorregistry.ai/developers
  baseURL: https://api.anchorregistry.ai
  tags:
  - Account
  tags_raw:
  - account
  properties:
  - type: OpenAPI
    url: openapi/anchorregistry-ai-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-pending-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-status-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-tree-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-retraction-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-request-schema.json
- aid: anchorregistry-ai:anchorregistry-ai-discovery-api
  name: AnchorRegistry Discovery API
  description: The discovery API from AnchorRegistry — 1 operation(s) for discovery.
  humanURL: https://anchorregistry.ai/developers
  baseURL: https://api.anchorregistry.ai
  tags:
  - Discovery
  tags_raw:
  - discovery
  properties:
  - type: OpenAPI
    url: openapi/anchorregistry-ai-discovery-api-openapi.yml
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-pending-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-status-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-tree-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-retraction-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-request-schema.json
- aid: anchorregistry-ai:anchorregistry-ai-register-api
  name: AnchorRegistry Register API
  description: The register API from AnchorRegistry — 9 operation(s) for register.
  humanURL: https://anchorregistry.ai/developers
  baseURL: https://api.anchorregistry.ai
  tags:
  - Register
  tags_raw:
  - register
  properties:
  - type: OpenAPI
    url: openapi/anchorregistry-ai-register-api-openapi.yml
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-pending-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-status-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-tree-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-retraction-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-request-schema.json
- aid: anchorregistry-ai:anchorregistry-ai-system-api
  name: AnchorRegistry System API
  description: The system API from AnchorRegistry — 3 operation(s) for system.
  humanURL: https://anchorregistry.ai/developers
  baseURL: https://api.anchorregistry.ai
  tags:
  - System
  tags_raw:
  - system
  properties:
  - type: OpenAPI
    url: openapi/anchorregistry-ai-system-api-openapi.yml
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-pending-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-status-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-tree-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-retraction-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-request-schema.json
- aid: anchorregistry-ai:anchorregistry-ai-verify-api
  name: AnchorRegistry Verify API
  description: The verify API from AnchorRegistry — 3 operation(s) for verify.
  humanURL: https://anchorregistry.ai/developers
  baseURL: https://api.anchorregistry.ai
  tags:
  - Verify
  tags_raw:
  - verify
  properties:
  - type: OpenAPI
    url: openapi/anchorregistry-ai-verify-api-openapi.yml
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-pending-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-registration-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-status-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-tree-response-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-retraction-request-schema.json
  - type: JSONSchema
    url: json-schema/anchorregistry-ai-account-request-schema.json
x-enrichment:
  date: '2026-11-01'
  status: nochange
  artifacts_added: 0
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

AnchorRegistry API — frequently asked questions

Does AnchorRegistry have an API?

Yes. APIs.io lists 5 APIs from AnchorRegistry, including AnchorRegistry Account API, AnchorRegistry Discovery API and AnchorRegistry Register API, and 2 more.

Is there an OpenAPI specification for the AnchorRegistry API?

Yes. APIs.io indexes 5 OpenAPI specifications for AnchorRegistry, each linked for download from this page.

How do I authenticate with the AnchorRegistry API?

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

How much does the AnchorRegistry API cost?

APIs.io lists 5 pricing plans for AnchorRegistry, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does AnchorRegistry have an MCP server?

Yes. APIs.io lists 1 MCP server for AnchorRegistry: Remote MCP server at mcp.anchorregistry.ai.

Is the AnchorRegistry API ready for AI agents?

AnchorRegistry has a Kin Score of 47.8 out of 100 (developing) and an Agent Readiness score of 31.5 (agent-ready), scored by API Evangelist on 2026-11-02.

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