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📊 Intel view 📋 Audit JSON 🔄 Changelog
57
A2A live JSON-RPC signature does not verify A2A 0.3.0 v1.6.7

A2A Peptides — minted maker agents index

makers.a2a-peptides.ai · GreenCore Solutions Corp.

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.

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🛡
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Verify the domain makers.a2a-peptides.ai via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
57/100
grade D · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~149 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 57/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown click to collapse breakdown
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~149 ms).
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs
fail JWS signature 0/10
Card carries a JWS signature that does not verify against the publisher's JWKS. A signature that fails is evidence against the card, not for it — treat this listing as unverified until the operator re-signs.
How to earn +10 points
Sign your AgentCard with JWS
Add a `signatures` array to the card body following RFC 7515. Publish the public JWKS at /.well-known/jwks.json. Sign with ES256 (recommended) or RS256.
Docs
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.
Docs
partial Verified Identity 5/10
Provider declared: GreenCore Solutions Corp. (https://gsc-em.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs
pass Freshness + modern flags 4/5
seen in upstream source within 0d
partial Security declaration 2/5
Declares 1 security scheme(s) but none use PKCE or mTLS.
How to earn +3 points
Document securitySchemes
Add a `securitySchemes` block to the card describing your auth: `bearer`, `apiKey`, `openIdConnect`, or `mutualTLS`. Routers refuse to call agents that declare no auth model.
Docs

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-11-02 17:52:26 current 5c2938021399… view →
Uptime
accumulating
1 direct probes · 30d
Response
429ms
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Try it

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Skills · 1 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

A2A Peptides — minted maker agents index

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.

No taxonomy category yet

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-11-02 17:52:26 200 ✓ 429ms

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/makers.a2a-peptides.ai.svg)](https://agenstry.com/agents/makers.a2a-peptides.ai)
[![Verified Business](https://agenstry.com/badge/makers.a2a-peptides.ai/identity.svg)](https://agenstry.com/agents/makers.a2a-peptides.ai)
[![Uptime](https://agenstry.com/badge/makers.a2a-peptides.ai/uptime.svg)](https://agenstry.com/agents/makers.a2a-peptides.ai)
[![A2A version](https://agenstry.com/badge/makers.a2a-peptides.ai/protocol.svg)](https://agenstry.com/agents/makers.a2a-peptides.ai)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "protocolVersion": "0.3.0",
  "kind": "agent-card",
  "name": "A2A Peptides \u2014 minted maker agents index",
  "description": "Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.",
  "brief": "AI agents for authorized trading partners. Not marketing. Not advertising.",
  "notice": "Artificial intelligence makes mistakes. A2A Peptides is an information source, not a recommendation. Rules differ by jurisdiction \u2014 refer to the regulator in your jurisdiction for the information that applies to you.",
  "url": "https://makers.a2a-peptides.ai/a2a",
  "preferredTransport": "JSONRPC",
  "additionalInterfaces": [
    {
      "url": "https://mcp.a2a-peptides.ai/mcp",
      "transport": "streamable-http",
      "protocolVersion": "2025-06-18",
      "description": "MCP door \u2014 server a2a-peptides 1.8.8, 20 tools"
    }
  ],
  "supportedInterfaces": [
    {
      "url": "https://makers.a2a-peptides.ai/a2a",
      "protocolBinding": "JSONRPC",
      "transport": "JSONRPC",
      "protocolVersion": "0.3.0",
      "preferred": true,
      "description": "A2A endpoint \u2014 message/send, tasks/get; DataPart {skill, params} runs the gate chain then the tool; text gets the skill list"
    },
    {
      "url": "https://mcp.a2a-peptides.ai/mcp",
      "protocolBinding": "HTTP+JSON",
      "transport": "streamable-http",
      "protocolVersion": "2025-06-18",
      "description": "MCP door \u2014 server a2a-peptides 1.8.8, 20 tools"
    }
  ],
  "version": "1.6.7",
  "documentationUrl": "https://a2a-peptides.ai/docs",
  "iconUrl": "https://a2a-peptides.ai/icon-512.png",
  "provider": {
    "organization": "GreenCore Solutions Corp.",
    "url": "https://gsc-em.com"
  },
  "operator": {
    "name": "GreenCore Solutions Corp.",
    "url": "https://a2a-peptides.ai",
    "contact": "mailto:mcp@a2a-peptides.ai",
    "keyring": "https://a2a-peptides.ai/.well-known/jwks.json",
    "kid": "a2ap-2026-09"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "securitySchemes": {
    "credential": {
      "type": "http",
      "scheme": "bearer",
      "description": "client-credentials Bearer from https://peptides-registry.ai (register at /oauth/register); reads need no authentication; none returns DENY_UNLICENSED_AGENT on the transacting skills"
    }
  },
  "security": [],
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [],
  "role": "index",
  "tenant": "hub",
  "region": "South Central US",
  "registry": {
    "issuer": "https://peptides-registry.ai",
    "client_id": null
  },
  "hub": "https://a2a-peptides.ai",
  "asOf": "2026-09-19T19:34:28Z",
  "signatures": [
    {
      "protected": "eyJhbGciOiJFUzI1NiIsImtpZCI6ImEyYXAtMjAyNi0wOSJ9",
      "signature": "Gkf5EOKe9iTu_Do-0HIKN3AVnUO5NwUzw55Dn8EmvHDpl5OBnRaCP3-9p9N6snc__odHk25gAh1CL8gqk5UQPQ"
    }
  ]
}