anchor-x402

anchor-x402 operates a pay-per-call API surface for AI agents, billed with the x402 HTTP payment protocol instead of API keys or accounts. Eighteen stateless services run on AWS Lambda and FastAPI behind https://api.anchor-x402.com, each returning an x402 v2 402 PaymentRequired challenge that a caller settles per request in USDC on Base or Solana (select routes also settle JPYC on Polygon) via EIP-3009 transferWithAuthorization. The catalog spans on-chain anchoring and attestation, wallet sanctions and risk screening, Web3 data decoding, ENS/SNS name resolution, token pricing, x402 spend accounting, verifiable signed randomness, and LLM-backed content analysis, priced from $0.001 to $1.77 per call. The same 18 services are exposed over MCP (a hosted Streamable HTTP endpoint at https://api.anchor-x402.com/mcp whose tools/list is free and anonymous, plus an npm stdio package) and over a signed A2A JSON-RPC door at /v1/a2a, with a conformant A2A 0.3.0 agent card and a hosted Claude chatbot at chat.anchor-x402.com for non-developers. Source is MIT licensed and the operator publishes a trust portal that states plainly it holds no SOC 2, ISO 27001, PCI or HIPAA certification.

anchor-x402 publishes 18 API contracts indexed on the APIs.io network, including Anchor API, Attest API, Aura API, and 15 more. Tagged areas include Company, x402, Agents, Payments, and Blockchain.

The anchor-x402 catalog on APIs.io includes 1 Spectral governance ruleset.

anchor-x402’s developer surface includes documentation, API reference, getting-started guide, pricing, sandbox, authentication, code examples, and 26 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

50.3/100 developing ▬ flat Agent 42/100 agent ready Front door AI 6/6 dominant Heartbeat 63/100 slowing open core · MIT Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 9 Agent Skills

Company x402 Agents Payments Blockchain MCP Web3 Pay-per-call Agentic Payments Stablecoins Compliance Attestation A2A

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Blockchain & Digital Assets

AE-240

Intel

POST /v1/intel/wallet

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 50.3/100 · developing

Contract Quality 8.5 / 19

Developer Ergonomics 10.7 / 15

Access Clarity 8.7 / 15

Operational Transparency 1.3 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 3.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 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 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/anchor-x402/"><img src="https://apis.io/badge/anchor-x402/card.svg" alt="anchor-x402 on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
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)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 45.1 — up to +13.7 composite points
Operational Transparency scores 13.2 — up to +11.3 composite points
Access Clarity scores 57.9 — up to +8.4 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/anchor-x402/apis.yml: open an issue on github.com/api-evangelist/anchor-x402 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Stablecoins and Tokenization (stablecoin issuers, tokenized assets)	standard	40.9 (thin)	1	1
x402 Micropayments & Agentic Pay-per-Call	standard	40.9 (thin)	1	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 5

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 (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 18

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

anchor-x402 Anchor API

The Anchor API from anchor-x402 — 1 operation(s) for anchor.

anchor-x402 Attest API

The Attest API from anchor-x402 — 2 operation(s) for attest.

anchor-x402 Aura API

The Aura API from anchor-x402 — 1 operation(s) for aura.

anchor-x402 Decode API

The Decode API from anchor-x402 — 2 operation(s) for decode.

anchor-x402 Grade API

The Grade API from anchor-x402 — 1 operation(s) for grade.

anchor-x402 Health API

The Health API from anchor-x402 — 1 operation(s) for health.

anchor-x402 Intel API

The Intel API from anchor-x402 — 1 operation(s) for intel.

anchor-x402 Investigate API

The Investigate API from anchor-x402 — 2 operation(s) for investigate.

anchor-x402 Ledger API

The Ledger API from anchor-x402 — 3 operation(s) for ledger.

anchor-x402 Oracle API

The Oracle API from anchor-x402 — 1 operation(s) for oracle.

anchor-x402 Parse API

The Parse API from anchor-x402 — 1 operation(s) for parse.

anchor-x402 Price API

The Price API from anchor-x402 — 1 operation(s) for price.

anchor-x402 Resolve API

The Resolve API from anchor-x402 — 1 operation(s) for resolve.

anchor-x402 Roast API

The Roast API from anchor-x402 — 1 operation(s) for roast.

anchor-x402 Roll API

The Roll API from anchor-x402 — 1 operation(s) for roll.

anchor-x402 Screen API

The Screen API from anchor-x402 — 1 operation(s) for screen.

anchor-x402 Tldr API

The Tldr API from anchor-x402 — 1 operation(s) for tldr.

anchor-x402 Feedback API

The Feedback API from anchor-x402 — 1 operation(s) for feedback.

Scroll for all 18

MCP Servers 1

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

anchor-x402 MCP Server

Remote MCP server at api.anchor-x402.com over streamable HTTP; 18 tools listed.

MCP SERVER

Agent Skills 9

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

calldata-decode

AGENT SKILL

datetime-parse

AGENT SKILL

decision-attest

AGENT SKILL

dual-chain

AGENT SKILL

intel-wallet

AGENT SKILL

name-resolve

AGENT SKILL

token-price

AGENT SKILL

tx-decode

AGENT SKILL

wallet-screen

AGENT SKILL

Scroll for all 9

anchor-x402 API pricing

Prices published by anchor-x402, read 2026-10-28 from anchor-x402.com/.well-known/x402.json.

Plan	Price
/v1/anchor	$0.005
/v1/screen	$0.005
/v1/attest	$0.010
/v1/decode/tx	$0.001
/v1/resolve/name	$0.001
/v1/price/token	$0.001
/v1/decode/calldata	$0.001
/v1/parse/datetime	$0.001

All 18 plans, limits and sources →

Billed by: call · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Anchor X402 Plans Pricing

18 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Anchor X402 Rate Limits

0 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

anchor-x402

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Anchor X402 Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

anchor-x402 API Rules

46 rules · 41 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Anchor X402 Openapi Overlay

25 actions · servers · anchor-x402-openapi.json

GENERATED

Security Posture 4

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

Anchor X402 Authentication

2 schemes

SECURITY

Anchor X402 Domain Security

TLSv1.3

SECURITY

Anchor X402 Vulnerability Disclosure

contact published

SECURITY

Anchor X402 Trust Center

trust center published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

MCPServer

AgentSkill

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 6

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

ToolCrosswalk

Packages

SDKs

Examples

Access & Security 5

Authentication, authorization, and security posture

Security

TrustCenter

Authentication

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

AgentCard

AgentCard

Source (apis.yml)

aid: anchor-x402
name: anchor-x402
description: anchor-x402 operates a pay-per-call API surface for AI agents, billed with the x402 HTTP payment protocol instead
  of API keys or accounts. Eighteen stateless services run on AWS Lambda and FastAPI behind https://api.anchor-x402.com, each
  returning an x402 v2 402 PaymentRequired challenge that a caller settles per request in USDC on Base or Solana (select routes
  also settle JPYC on Polygon) via EIP-3009 transferWithAuthorization. The catalog spans on-chain anchoring and attestation,
  wallet sanctions and risk screening, Web3 data decoding, ENS/SNS name resolution, token pricing, x402 spend accounting,
  verifiable signed randomness, and LLM-backed content analysis, priced from $0.001 to $1.77 per call. The same 18 services
  are exposed over MCP (a hosted Streamable HTTP endpoint at https://api.anchor-x402.com/mcp whose tools/list is free and
  anonymous, plus an npm stdio package) and over a signed A2A JSON-RPC door at /v1/a2a, with a conformant A2A 0.3.0 agent
  card and a hosted Claude chatbot at chat.anchor-x402.com for non-developers. Source is MIT licensed and the operator publishes
  a trust portal that states plainly it holds no SOC 2, ISO 27001, PCI or HIPAA certification.
deliveryModel:
  model: open-core
  license: MIT
  license_evidence:
    repo: hypeprinter007-stack/anchor-x402
    spdx: MIT
    stars: 4
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: medium
  source:
  - openapi
  - pricing
  - repository-license
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://anchor-x402.com/og.png
url: https://raw.githubusercontent.com/api-evangelist/anchor-x402/refs/heads/main/apis.yml
x-type: company
x-source: manual:direct-request
x-tier: stub
x-tier-reason: direct-request
specificationVersion: '0.20'
created: '2026-09-11'
modified: '2026-09-11'
position: Producing
x-docs-platform: swagger-ui
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-18
tags:
- Company
- x402
- Agents
- Payments
- Blockchain
- MCP
- Web3
- Pay-per-call
- Agentic Payments
- Stablecoins
- Compliance
- Attestation
- A2A
tags_raw:
- Company
- x402
- Agents
- Payments
- Blockchain
- MCP
- Web3
- Pay Per Call
- Agent Payments
- Stablecoins
- Compliance
- Attestation
- A2A
apis:
- aid: anchor-x402:anchor-x402-anchor-api
  name: anchor-x402 Anchor API
  description: The Anchor API from anchor-x402 — 1 operation(s) for anchor.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Anchor
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-anchor-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-attest-api
  name: anchor-x402 Attest API
  description: The Attest API from anchor-x402 — 2 operation(s) for attest.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Attest
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-attest-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-aura-api
  name: anchor-x402 Aura API
  description: The Aura API from anchor-x402 — 1 operation(s) for aura.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Aura
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-aura-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-decode-api
  name: anchor-x402 Decode API
  description: The Decode API from anchor-x402 — 2 operation(s) for decode.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Decode
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-decode-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-grade-api
  name: anchor-x402 Grade API
  description: The Grade API from anchor-x402 — 1 operation(s) for grade.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Grade
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-grade-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-health-api
  name: anchor-x402 Health API
  description: The Health API from anchor-x402 — 1 operation(s) for health.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-health-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-intel-api
  name: anchor-x402 Intel API
  description: The Intel API from anchor-x402 — 1 operation(s) for intel.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Intel
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-intel-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-investigate-api
  name: anchor-x402 Investigate API
  description: The Investigate API from anchor-x402 — 2 operation(s) for investigate.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Investigate
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-investigate-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-ledger-api
  name: anchor-x402 Ledger API
  description: The Ledger API from anchor-x402 — 3 operation(s) for ledger.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Ledger
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-ledger-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-oracle-api
  name: anchor-x402 Oracle API
  description: The Oracle API from anchor-x402 — 1 operation(s) for oracle.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Oracle
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-oracle-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-parse-api
  name: anchor-x402 Parse API
  description: The Parse API from anchor-x402 — 1 operation(s) for parse.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Parse
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-parse-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-price-api
  name: anchor-x402 Price API
  description: The Price API from anchor-x402 — 1 operation(s) for price.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Price
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-price-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-resolve-api
  name: anchor-x402 Resolve API
  description: The Resolve API from anchor-x402 — 1 operation(s) for resolve.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Resolve
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-resolve-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-roast-api
  name: anchor-x402 Roast API
  description: The Roast API from anchor-x402 — 1 operation(s) for roast.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Roast
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-roast-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-roll-api
  name: anchor-x402 Roll API
  description: The Roll API from anchor-x402 — 1 operation(s) for roll.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Roll
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-roll-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-screen-api
  name: anchor-x402 Screen API
  description: The Screen API from anchor-x402 — 1 operation(s) for screen.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Screen
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-screen-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-tldr-api
  name: anchor-x402 Tldr API
  description: The Tldr API from anchor-x402 — 1 operation(s) for tldr.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Tldr
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-tldr-api-openapi.yml
  - type: Documentation
    url: https://api.anchor-x402.com/docs
  - type: APIReference
    url: https://api.anchor-x402.com/redoc
- aid: anchor-x402:anchor-x402-feedback-api
  name: anchor-x402 Feedback API
  description: The Feedback API from anchor-x402 — 1 operation(s) for feedback.
  humanURL: https://api.anchor-x402.com/docs
  baseURL: https://api.anchor-x402.com
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/anchor-x402-feedback-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/anchor-x402-capability-edges.yml
  name: anchor-x402 Business Capability Map
- type: Overlay
  url: overlays/anchor-x402-openapi-overlay.yaml
- type: Website
  url: https://anchor-x402.com
- type: DeveloperPortal
  url: https://anchor-x402.com
- type: Documentation
  url: https://api.anchor-x402.com/docs
- type: APIReference
  url: https://api.anchor-x402.com/redoc
- type: GettingStarted
  url: https://anchor-x402.com/guides/pay-x402-api-node/
- type: GitHubOrganization
  url: https://github.com/hypeprinter007-stack
- type: SourceCode
  url: https://github.com/hypeprinter007-stack/anchor-x402
- type: Pricing
  url: https://anchor-x402.com/.well-known/x402.json
- type: StatusPage
  url: https://anchor-x402.betteruptime.com
- type: Security
  url: security/anchor-x402-vulnerability-disclosure.yml
- type: TrustCenter
  url: security/anchor-x402-trust-center.yml
- type: Sandbox
  url: sandbox/anchor-x402-sandbox.yml
- type: LLMsTxt
  url: llms/anchor-x402-llms.txt
- type: AgentCard
  url: a2a/anchor-x402-a2a.yml
- type: MCPServer
  url: mcp/anchor-x402-mcp.yml
- type: ToolCrosswalk
  url: mcp/anchor-x402-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/anchor-x402-well-known.yml
- type: Packages
  url: packages/anchor-x402-packages.yml
- type: SDKs
  url: packages/anchor-x402-packages.yml
- type: Authentication
  url: authentication/anchor-x402-authentication.yml
- type: Conventions
  url: conventions/anchor-x402-conventions.yml
- type: ErrorCatalog
  url: errors/anchor-x402-problem-types.yml
- type: Lifecycle
  url: lifecycle/anchor-x402-lifecycle.yml
- type: Conformance
  url: conformance/anchor-x402-conformance.yml
- type: DomainSecurity
  url: security/anchor-x402-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/anchor-x402-vulnerability-disclosure.yml
- type: DataModel
  url: data-model/anchor-x402-data-model.yml
- type: Examples
  url: examples/anchor-x402-examples.yml
- type: Plans
  url: plans/anchor-x402-plans-pricing.yml
- type: RateLimits
  url: rate-limits/anchor-x402-rate-limits.yml
x-enrichment:
  date: '2026-09-11'
  status: enriched
  artifacts_added: 36
  pass: local-v3
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://api.anchor-x402.com/.well-known/agent-card.json
  grade: conformant
  protocol_version: 0.3.0
  control: 404

anchor-x402 API — frequently asked questions

Does anchor-x402 have an API?

Yes. APIs.io lists 18 APIs from anchor-x402, including anchor-x402 Anchor API, anchor-x402 Attest API and anchor-x402 Aura API, and 15 more.

Is there an OpenAPI specification for the anchor-x402 API?

Yes. APIs.io indexes 18 OpenAPI specifications for anchor-x402, each linked for download from this page.

How do I authenticate with the anchor-x402 API?

anchor-x402 uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Anchor X402 Authentication.

How much does the anchor-x402 API cost?

anchor-x402 publishes its prices; its /v1/anchor plan is $0.005 as of 2026-10-28. APIs.io lists 18 pricing plans for anchor-x402, with each plan's price, limits and inclusions under Pricing on this page.

Does anchor-x402 have an MCP server?

Yes. APIs.io lists 1 MCP server for anchor-x402: Remote MCP server at api.anchor-x402.com over streamable HTTP; 18 tools listed.

Is the anchor-x402 API ready for AI agents?

anchor-x402 has a Kin Score of 50.3 out of 100 (developing) and an Agent Readiness score of 42.1 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/anchor-x402"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/anchor-x402/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/anchor-x402/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.