# A2A Peptides

> A2A Peptides is the cleared-commerce hub for the peptide industry, operated by GreenCore Solutions Corp. (GSC). It is a jurisdiction-and-pathway gate that only exposes items cleared to transact, with a catalogue behind it that only holds what passed. Every answer comes from a register page, carries its source and its rule-set version, and is signed.

Agents reach it over the Model Context Protocol (MCP) and Agent-to-Agent (A2A); settlement is x402 after the gate. Research-use stock is a reject class the door names and refuses. No research and development happens here.

Operator: GreenCore Solutions Corp. · Surface: https://a2a-peptides.ai · version 0.1.4 · as of 2026-09-17

## What it is

GSC's cleared-commerce hub for the peptide industry: a jurisdiction-and-pathway gate (US · CA · MX · EU · GB) that only exposes items cleared to transact, a catalogue that only holds what passed, and a Model Context Protocol (MCP) door with twenty tools at v1.0. Research-use stock is a reject class (ruo_not_cleared) refused with a reason code.

## Doors

- Page: https://a2a-peptides.ai/ (Markdown twin on Accept: text/markdown, or https://a2a-peptides.ai/index.md)
- MCP door of record: https://mcp.a2a-peptides.ai/mcp — streamable-http, stateless, server name a2a-peptides
- Human contact: https://a2a-peptides.ai/#contact — the form is the only human door
- Setup: https://a2a-peptides.ai/setup · Docs: https://a2a-peptides.ai/docs

## Gate

resolve_jurisdiction → resolve_actor → gate_transaction before any price, availability, order or handoff. Reason codes: ALLOW · REQUIRE_RX · DENY_UNLICENSED_AGENT · DENY_ACTOR_CLASS · DENY_PATHWAY_NOT_CLEARED · DENY_JURISDICTION · DENY_STATE_OVERLAY · DENY_RUO · DENY_CONTROLLED · DENY_NO_SERIALIZATION · DENY_EXPIRED_LICENCE · DENY_CROSS_BORDER.

## Tools (20)

- Gate: resolve_jurisdiction, resolve_actor, gate_transaction
- Regulatory truth: get_substance_record, get_pathway_status, get_compounding_eligibility, get_label_and_indication, get_enforcement_watch
- Cleared catalogue: search_cleared_items, get_item, compare_presentations
- Licensed supply: find_licensed_supplier, get_availability, get_price
- Quality: get_lot_coa, verify_serialization
- Commerce: create_order_intent, a2a_handoff
- Operations: get_safety_label, log_audit

## Machine kit

- https://a2a-peptides.ai/.well-known/agent-card.json — A2A Agent Card (ES256, kid a2ap-2026-09)
- https://a2a-peptides.ai/.well-known/jwks.json — keyring
- https://a2a-peptides.ai/ai-catalog.json — resource catalogue (also /.well-known/ai-catalog.json)
- https://a2a-peptides.ai/health.json · https://a2a-peptides.ai/.well-known/security.txt · https://a2a-peptides.ai/robots.txt · https://a2a-peptides.ai/sitemap.xml
- https://a2a-peptides.ai/icon.svg · /icon-512.png · /icon-512-dark.png · /site.webmanifest

## Family

- a2a-peptides.ai — hub
- peptides-registry.ai — registry (status table, signed records, resolver, metered truth)
- peptides-x402.ai — payments door (settlement + meter)
- peptides-usa.ai — declared-virtual showcase tenant
- 63 twin, typo and singular zones forward 301 to their canonical .ai

## Rulings

- 2026-09-17 — Brand: a2a-peptides.ai is canonical, hyphen everywhere. Unhyphenated and singular forms forward only. The Model Context Protocol (MCP) door is a subdomain of the hub, never a second hostname.
- 2026-09-17 — Judged as a machine surface: names, marks and copy are read by agents, registries and tokenizers.
- 2026-09-17 — Data model and door pattern come from the public-company knowledge-graph door: nodes, an entity resolved by identifier, sourced aliases, dated events, versioned rule sets per jurisdiction. Site chrome and design come from agent-kg.ai. Gate and order-close come from the GSC doors already on the wire.
- 2026-09-17 — x402 is 100% of the design: settlement after the gate, and a per-resolve meter on the registry's truth tools.
- 2026-09-17 — Multi-tenant from day one: one codebase, one status table, 10 to 50 tenants. A tenant is a supplier record, catalogue rows and a signed Agent Card on its own hostname.
- 2026-09-17 — Peptides USA is the declared-virtual showcase tenant on peptides-usa.ai: declared on every surface, real or no Global Trade Item Numbers (GTINs), never invented, and never counted in public numbers.
- 2026-09-17 — Research-use stock is a reject class. The door names it, refuses it with a reason code, and no commerce tool touches it.
- 2026-09-17 — Icon of record: the node on its own, a solid disc with a light-blue centre on a transparent background. Hub blue, registry navy, x402 teal.