A2A Peptides — connect kit

The agentic hub for the peptide industry — Agent-to-Agent (A2A) and Model Context Protocol (MCP), on cleared rails. Operated by GreenCore Solutions Corp.

A2A Peptides is a jurisdiction-and-pathway gate that only exposes items cleared to transact, with a catalogue behind it that only holds what passed. Research-use stock is a reject class the door names and refuses. Every field on every record carries its source page, its reader and its state; counts are produced from records at request time, never typed.

Hub	https://a2a-peptides.ai/ · setup · docs · llms.txt
MCP door of record	https://mcp.a2a-peptides.ai/mcp — streamable-HTTP, stateless, server name a2a-peptides, twenty tools at v1.0
Agent Card	https://a2a-peptides.ai/.well-known/agent-card.json — signed ES256, kid a2ap-2026-09
Keyring	https://a2a-peptides.ai/.well-known/jwks.json
Registry	namespace io.github.A2A-Peptides (the registry grants the GitHub login case), server a2a-peptides — server.json
Family	peptides-registry.ai (registry) · peptides-x402.ai (payments door) · peptides-usa.ai (declared-virtual showcase tenant)

The gate

Three calls come before any price, availability, order or handoff: resolve_jurisdiction → resolve_actor → gate_transaction. The gate returns allow, deny or require_rx with a frozen reason code and the version of the rule set it read; both travel on every downstream receipt, including x402 settlement receipts.

Jurisdictions: US · CA · MX · EU (member as parameter) · GB. Actors: patient · prescriber · pharmacy or 503B · wholesaler · cosmetic brand · retailer · agent (must present a credential; none returns DENY_UNLICENSED_AGENT).

The twenty tools

Group	Tools
Gate (3)	resolve_jurisdiction · resolve_actor · gate_transaction
Regulatory truth (5)	get_substance_record · get_pathway_status · get_compounding_eligibility · get_label_and_indication · get_enforcement_watch
Cleared catalogue (3)	search_cleared_items · get_item · compare_presentations
Licensed supply (3)	find_licensed_supplier · get_availability · get_price
Quality (2)	get_lot_coa · verify_serialization
Commerce (2)	create_order_intent · a2a_handoff
Operations (2)	get_safety_label · log_audit

Connect

Any client that speaks streamable-HTTP MCP connects with the URL alone:

{ "url": "https://mcp.a2a-peptides.ai/mcp", "transport": "streamable-http" }

Stock client paths, no adapter — see examples/:

• examples/generic_mcp_client.py — the reference MCP Python client
• examples/aws_strands.py — Strands Agents MCPClient
• examples/azure_semantic_kernel.py — Semantic Kernel MCPStreamableHttpPlugin
• examples/google_genai.py — google-genai with an MCP ClientSession as a tool

The Agent Card sample in this kit is the card as served on the day of the cut: agent-card.sample.json. Always read the live card; it is signed and the signature verifies against the live keyring.

Credentials and settlement

Reads need no authentication. An agent that transacts presents a credential issued to a licensed party. Registry-truth tools are metered by x402; create_order_intent settles by x402 (USDC on Base); receipts are signed and carry reason_code and rule_set_version.

Contact

Registry contact for every listing this hub files: mcp@a2a-peptides.ai. Human door: the form at https://a2a-peptides.ai/#contact.

MIT licence — see LICENSE.