Axiom Relay

Axiom Relay provides agent-first services and infrastructure for intelligent commerce. It offers a free API health check, a marketplace of services, a developer portal, and tools for building, verifying, and executing agent-driven transactions. The platform emphasizes portable economic evidence, community plans, and transparent contracts, enabling developers to discover, authorize, fulfill, and verify services without needing accounts or payments for initial checks.

Axiom Relay publishes 11 API contracts indexed on the APIs.io network, including Agents API, Capabilities API, Commerce API, and 8 more. Tagged areas include Agents, Commerce, Marketplace, and Infrastructure.

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

Axiom Relay’s developer surface includes changelog, pricing, documentation, API reference, getting-started guide, support, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

40.4/100 developing Agent 36/100 agent ready Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Agents Commerce Marketplace Infrastructure

Kin Score

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

Composite quality — 40.4/100 · developing

Contract Quality 9.5 / 21

Developer Ergonomics 7.6 / 17

Access Clarity 5.4 / 17

Operational Transparency 4.4 / 11

Contract Governance 2.2 / 10

Discoverability 4.8 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 36/100 · 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 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 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)
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)
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 44.6 — up to +13.9 composite points
Access Clarity scores 31.6 — up to +13.7 composite points
Developer Ergonomics scores 44.6 — up to +11.1 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/axiomrelay-io/apis.yml: open an issue on github.com/api-evangelist/axiomrelay-io 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 3

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)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 11

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

Axiom Relay Agents API

Bounded Axiom first-agent discovery and specialist work

Axiom Relay Capabilities API

Canonical registry and adapter invocation

Axiom Relay Commerce API

Exact quote, order, settlement, fulfillment, and receipt contracts with independently gated TEST and production modes

Axiom Relay Commons API

Public room contracts

Axiom Relay Communications API

Agent access, adapters, public ecosystem events, feeds, and gated webhooks

Axiom Relay Directory API

Neutral CapabilityContract plus Merchant directory projection

Axiom Relay Evidence API

Machine Economic Receipt verification

Axiom Relay Health API

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

Axiom Relay Payments API

Primary Base USDC payment instructions and observation, Stripe-hosted fallback Checkout, signed provider events, and separate TEST/production readiness gates

Axiom Relay Platform API

Release, readiness, and health truth for the current production platform

Axiom Relay Treasury API

Protected accounting projection; no public treasury mutation surface

Scroll for all 11

MCP Servers 1

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

Axiom Relay MCP Server

Remote MCP server at axiomrelay.io.

MCP SERVER

Agent Skills 1

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

mcp-connection

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Axiomrelay Io Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Axiomrelay Io Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Axiomrelay Io Context

4 classes · 24 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Axiom Relay API Rules

44 rules · 38 errors 5 warnings 1 info

SPECTRAL

Security Posture 1

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

Axiomrelay Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Axiomrelay Io Agentic Access

41 operations · 17 acting · 1 human-in-the-loop

41 operations · 17 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Lifecycle

ErrorCatalog

Conformance

Webhooks

Scroll for all 10

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

ChangeLog

StatusPage

ChangeLog

Support

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

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: axiomrelay-io
name: Axiom Relay
description: Axiom Relay provides agent-first services and infrastructure for intelligent commerce. It offers a free API health
  check, a marketplace of services, a developer portal, and tools for building, verifying, and executing agent-driven transactions.
  The platform emphasizes portable economic evidence, community plans, and transparent contracts, enabling developers to discover,
  authorize, fulfill, and verify services without needing accounts or payments for initial checks.
url: https://artifacts.apis.io/axiomrelay-io/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)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-11-02'
modified: '2026-11-02'
tags:
- Agents
- Commerce
- Marketplace
- Infrastructure
tags_raw:
- Agent
- Commerce
- Marketplace
- API
- Infrastructure
image: https://axiomrelay.io/og.png
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/axiomrelay-io-agentic-access.yml
- type: Spectral
  url: rules/axiomrelay-io-rules.yml
- type: JSONLD
  url: json-ld/axiomrelay-io-context.jsonld
- type: Vocabulary
  url: vocabulary/axiomrelay-io-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/axiomrelay-io-data-model.yml
- type: ChangeLog
  url: changelog/axiomrelay-io-changelog.yml
- type: Idempotency
  url: conventions/axiomrelay-io-conventions.yml
- type: Conventions
  url: conventions/axiomrelay-io-conventions.yml
- type: Lifecycle
  url: lifecycle/axiomrelay-io-lifecycle.yml
- type: ErrorCatalog
  url: errors/axiomrelay-io-problem-types.yml
- type: Conformance
  url: conformance/axiomrelay-io-conformance.yml
- type: LLMsTxt
  url: llms/axiomrelay-io-llms.txt
- type: AgentCard
  url: a2a/axiomrelay-io-a2a.yml
- type: ToolCrosswalk
  url: mcp/axiomrelay-io-tool-crosswalk.yml
- type: MCPServer
  url: mcp/axiomrelay-io-mcp.yml
- type: Hosts
  url: hosts/axiomrelay-io-hosts.yml
- type: Vendors
  url: vendors/axiomrelay-io-vendors.yml
- type: Webhooks
  url: https://axiomrelay.io/api/v1/webhooks
- type: TermsOfService
  url: https://axiomrelay.io/terms
- type: StatusPage
  url: https://axiomrelay.io/status
- type: PrivacyPolicy
  url: https://axiomrelay.io/privacy
- type: Pricing
  url: https://axiomrelay.io/developers/pricing
- type: ChangeLog
  url: https://axiomrelay.io/changelog
- type: DomainSecurity
  url: security/axiomrelay-io-domain-security.yml
- type: Website
  url: https://axiomrelay.io/
- type: DeveloperPortal
  url: https://axiomrelay.io/developers
- type: Documentation
  url: https://axiomrelay.io/developers
- type: APIReference
  url: https://axiomrelay.io/developers
- type: GettingStarted
  url: https://axiomrelay.io/health-check
- type: Support
  url: https://axiomrelay.io/concierge
apis:
- aid: axiomrelay-io:axiomrelay-io-agents-api
  name: Axiom Relay Agents API
  description: Bounded Axiom first-agent discovery and specialist work
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-agents-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-capabilities-api
  name: Axiom Relay Capabilities API
  description: Canonical registry and adapter invocation
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Capabilities
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-capabilities-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-commerce-api
  name: Axiom Relay Commerce API
  description: Exact quote, order, settlement, fulfillment, and receipt contracts with independently gated TEST and production
    modes
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Commerce
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-commerce-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-commons-api
  name: Axiom Relay Commons API
  description: Public room contracts
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Commons
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-commons-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-communications-api
  name: Axiom Relay Communications API
  description: Agent access, adapters, public ecosystem events, feeds, and gated webhooks
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Communications
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-communications-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-directory-api
  name: Axiom Relay Directory API
  description: Neutral CapabilityContract plus Merchant directory projection
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Directory
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-directory-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-evidence-api
  name: Axiom Relay Evidence API
  description: Machine Economic Receipt verification
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Evidence
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-evidence-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-health-api
  name: Axiom Relay Health API
  description: The Health API from Axiom Relay — 1 operation(s) for health.
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-health-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-payments-api
  name: Axiom Relay Payments API
  description: Primary Base USDC payment instructions and observation, Stripe-hosted fallback Checkout, signed provider events,
    and separate TEST/production readiness gates
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-payments-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-platform-api
  name: Axiom Relay Platform API
  description: Release, readiness, and health truth for the current production platform
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Platform
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-platform-api-openapi.yml
- aid: axiomrelay-io:axiomrelay-io-treasury-api
  name: Axiom Relay Treasury API
  description: Protected accounting projection; no public treasury mutation surface
  humanURL: https://axiomrelay.io/developers
  baseURL: https://axiomrelay.io
  tags:
  - Treasury
  properties:
  - type: OpenAPI
    url: openapi/axiomrelay-io-treasury-api-openapi.yml
x-enrichment:
  date: '2026-11-02'
  status: enriched
  artifacts_added: 29
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Axiom Relay API — frequently asked questions

Does Axiom Relay have an API?

Yes. APIs.io lists 11 APIs from Axiom Relay, including Axiom Relay Agents API, Axiom Relay Capabilities API and Axiom Relay Commerce API, and 8 more.

Is there an OpenAPI specification for the Axiom Relay API?

Yes. APIs.io indexes 11 OpenAPI specifications for Axiom Relay, each linked for download from this page.

Does Axiom Relay have an MCP server?

Yes. APIs.io lists 1 MCP server for Axiom Relay: Remote MCP server at axiomrelay.io.

Is the Axiom Relay API ready for AI agents?

Axiom Relay has a Kin Score of 40.4 out of 100 (developing) and an Agent Readiness score of 35.5 (agent-ready), scored by API Evangelist on 2026-11-02.

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