A2A Peptides

A2A Peptides provides an agentic commerce hub enabling licensed peptide trade via the Model Context Protocol (MCP). It connects AI agents directly to peptide suppliers across 35 countries, offering real-time clearance checks, pricing, and automated ordering without human browsers.

A2A Peptides is listed with 1 API on the APIs.io network. Tagged areas include Peptides, Agentic Commerce, MCP, Artificial Intelligence, and LicensedTrade.

The A2A Peptides catalog on APIs.io includes 1 Spectral governance ruleset.

A2A Peptides’ developer surface includes documentation, API reference, getting-started guide, support, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.5/100 thin ▬ flat Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessOpen

1 API 1 MCP Servers

Peptides Agentic Commerce MCP Artificial IntelligenceLicensedTrade

Kin Score

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

Composite quality — 27.5/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 6.8 / 17

Access Clarity 3.6 / 17

Operational Transparency 3.5 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.8 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 0 / 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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 21.1 — up to +15.8 composite points
Developer Ergonomics scores 39.8 — up to +12.0 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/a2a-peptides-ai/apis.yml: open an issue on github.com/api-evangelist/a2a-peptides-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 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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

Agent2Agent

measured — observed by APIs.io (conformant)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

APIs 1

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

A2A Peptides API

Product facts on this hub are served live from gtinfetch.ai, the GTIN resolver for AI agents; every answer carries its source page, date read and gtinfetch’s signature.

MCP Servers 1

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

A2A Peptides MCP Server

Remote MCP server at mcp.a2a-peptides.ai.

MCP SERVER

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

A2A Peptides API Rules

7 rules · 5 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

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

A2A Peptides Ai Authentication

0 schemes

SECURITY

A2A Peptides Ai Domain Security

TLSv1.3 · DNSSEC

SECURITY

A2A Peptides Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

A2A Peptides Ai Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

A2A Peptides Ai Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

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 2

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

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: a2a-peptides-ai
name: A2A Peptides
description: A2A Peptides provides an agentic commerce hub enabling licensed peptide trade via the Model Context Protocol
  (MCP). It connects AI agents directly to peptide suppliers across 35 countries, offering real-time clearance checks, pricing,
  and automated ordering without human browsers.
url: https://artifacts.apis.io/a2a-peptides-ai/apis.yml
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://a2a-peptides.ai/icon-512.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Peptides
- Agentic Commerce
- MCP
- Artificial Intelligence
- LicensedTrade
tags_raw:
- Peptides
- AgenticCommerce
- MCP
- AI
- LicensedTrade
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/a2a-peptides-ai-agentic-access.yml
- type: Spectral
  url: rules/a2a-peptides-ai-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conformance
  url: conformance/a2a-peptides-ai-conformance.yml
- type: LLMsTxt
  url: llms/a2a-peptides-ai-llms.txt
- type: AgentCard
  url: a2a/a2a-peptides-ai-a2a.yml
- type: MCPServer
  url: mcp/a2a-peptides-ai-mcp.yml
- type: SecurityTxt
  url: well-known/a2a-peptides-ai-security.txt
- type: SecurityTxt
  url: well-known/a2a-peptides-ai-mcp-security.txt
- type: WellKnown
  url: well-known/a2a-peptides-ai-well-known.yml
- type: Hosts
  url: hosts/a2a-peptides-ai-hosts.yml
- type: Vendors
  url: vendors/a2a-peptides-ai-vendors.yml
- type: Security
  url: https://a2a-peptides.ai/security
- type: GitHubOrganization
  url: https://github.com/A2A-Peptides
- type: VulnerabilityDisclosure
  url: security/a2a-peptides-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/a2a-peptides-ai-domain-security.yml
- type: Website
  url: https://a2a-peptides.ai/
- type: Documentation
  url: https://a2a-peptides.ai/docs
- type: APIReference
  url: https://a2a-peptides.ai/docs
- type: GettingStarted
  url: https://a2a-peptides.ai/setup
- type: Support
  url: https://a2a-peptides.ai/support
- type: TermsOfService
  url: https://a2a-peptides.ai/terms
- type: PrivacyPolicy
  url: https://a2a-peptides.ai/privacy
- type: StatusPage
  url: https://a2a-peptides.ai/status
apis:
- name: A2A Peptides API
  description: Product facts on this hub are served live from gtinfetch.ai, the GTIN resolver for AI agents; every answer
    carries its source page, date read and gtinfetch’s signature.
  humanURL: https://a2a-peptides.ai/docs
  baseURL: https://mcp.a2a-peptides.ai
  properties:
    name: OpenAPI (provider-hosted)
  aid: a2a-peptides-ai:a2a-peptides-api
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 29
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

A2A Peptides API — frequently asked questions

Does A2A Peptides have an API?

Yes. APIs.io lists 1 API from A2A Peptides, including A2A Peptides API.

How do I authenticate with the A2A Peptides API?

A2A Peptides documents its authentication (0 schemes). The details are profiled on APIs.io as A2A Peptides Ai Authentication.

Does A2A Peptides have an MCP server?

Yes. APIs.io lists 1 MCP server for A2A Peptides: Remote MCP server at mcp.a2a-peptides.ai.

Is the A2A Peptides API ready for AI agents?

A2A Peptides has a Kin Score of 27.5 out of 100 (thin) and an Agent Readiness score of 20.7 (agent-aware), scored by API Evangelist on 2026-11-02.

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