io.github.A2A-PeptidesPublished by GitHub account A2A-Peptidesv1.6.7Updated Oct 26, 2026
Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.
Remote MCP hub for peptide regulatory and commerce data: resolves jurisdiction and actor, gates transactions, and returns cleared product, supply and pricing…
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.A2A-Peptides%2Fa2a-peptides/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"a2a-peptides": {
"type": "http",
"url": "https://mcp.a2a-peptides.ai/mcp"
}
}
}Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.
The Agent-to-Agent (A2A) surface for peptides, served over the Model Context Protocol (MCP) — the record, a registry for security, and x402 to pay on it. AI agents for authorized trading partners. Not marketing. Not advertising. Operated by A2A Peptides Corp., built and run by GreenCore Solutions Corp. (GSC).
Connect: https://mcp.a2a-peptides.ai/mcp — streamable-HTTP, no adapter. Hub: https://a2a-peptides.ai/ · llms.txt · Agent Card
Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides. AI agents for authorized trading partners. Not marketing. Not advertising. Operated by A2A Peptides Corp., built and run by GreenCore Solutions Corp. (GSC).
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. Paid resolves at x402.gtinfetch.ai.| A2A endpoint | https://<hostname>/a2a on every agent — A2A 0.3.0 JSON-RPC, message/send and tasks/get; the preferred interface on every card |
| 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 |
| Issuer | https://peptides-registry.ai/.well-known/oauth-authorization-server — client-credentials Bearer for the transacting skills; reads need none |
| Auditor Port | https://audit.a2a-peptides.ai/packs/index.json — the public index of sealed review packs |
| Registry | namespace io.github.A2A-Peptides (the registry grants the GitHub login case), server a2a-peptides — server.json |
| Family | hub · peptides-registry.ai (registry) · peptides-x402.ai (payments door) · a2a-pharma.ai (pharma gate) · peptides-usa.ai (first tenant) |
Every agent lives at its own hostname and answers two addresses: https://<hostname>/.well-known/agent-card.json (the signed card) and https://<hostname>/a2a (A2A 0.3.0 JSON-RPC: message/send, tasks/get). There is no inference behind the endpoint. A DataPart {"skill": ..., "params": {...}} runs the gate chain on the door — resolve_jurisdiction → resolve_actor → gate_transaction — and then the skill; the artifact carries the result, the notice, the resolved jurisdiction and the rule-set version. A plain text part gets the deterministic skill list with each input schema. A text part whose text is a JSON object with a skill key is read as the same {skill, params} request, so text-only clients can send structured requests too. Transacting skills take the issuer's Bearer; without it the answer is DENY_UNLICENSED_AGENT.
111 agents live, 36 product-line slots reserved on the tenant table; by region: South Central US 97 · West US 2 14. Counted from the hub's list_agents on 2026-09-19; door version 1.6.7, 20 tools.
Human-readable text on every card says UK; the machine field carries the ISO code. A country agent's hostname is the country code in lower case (the United Kingdom is uk, Germany is de, and the European Union level is eu) before .a2a-peptides.ai.
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: United States · Canada · Mexico · European Union (member as parameter) · UK · Korea · Japan · Singapore · Switzerland. Actors: authorized trading partner and its members (manufacturer, repackager, wholesale distributor, dispenser, third-party logistics provider; cosmetic responsible person and natural-health-product licence holder on the non-drug pathways) · prescriber · patient and public (referral classes) · agent (inherits the class of the credential it presents; none returns DENY_UNLICENSED_AGENT).
audit.a2a-peptides.ai is prepared for independent review: a read-only agent with seven skills (list_agents, get_pack_index, get_pack, verify_receipt, get_rule_set_versions, get_azure_posture, get_audit_log) and no transacting skill.
Review packs are sealed with a signed manifest (SHA-256 per file, a pack hash) and listed on a public index; a pack is never overwritten, later packs sit beside the old.
Pack contents and the audit log take an auditor credential; auditor credentials are issued by the operator only, time-boxed, and every call made with one is written to the audit log.
The port is review-ready as served; it makes no claim beyond what is on the wire.
The first tenant, peptides-usa.ai, has its agents on the wire today — a concierge, fifty-four state and territory agents, nine jurisdiction desks — and they answer every read and gate skill. Order intake for the tenant opens when a sourced licence is on the record; until then create_order_intent scoped to the tenant answers DENY_EXPIRED_LICENCE together with the licensed-destination referral.
Any client that speaks streamable-HTTP MCP connects with the URL alone:
Stock client paths, no adapter — see examples/:
examples/generic_mcp_client.py — the reference MCP Python clientexamples/aws_strands.py — Strands Agents MCPClientexamples/azure_semantic_kernel.py — Semantic Kernel MCPStreamableHttpPluginexamples/google_genai.py — google-genai with the door's tools as function declarationsexamples/a2a_google_sdk.py — a2a-sdk against a country agent: card, signature, one read, the refusalexamples/a2a_aws_strands.py — Strands Agents A2AClientToolProvider, the same exchangeexamples/a2a_azure_agent_framework.py — Microsoft Agent Framework A2AAgent, the same exchangeSample cards as served on the day of the cut: agent-card.sample.json (hub), agent-card.country.sample.json (one country agent), agent-card.audit.sample.json (the Auditor Port). Always read the live card; it is signed and the signature verifies against the live keyring.
Reads need no authentication. An agent that transacts presents a credential issued to a licensed party by the issuer at peptides-registry.ai. 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.
Registry contact for every listing this hub files: [email protected]. Human door: the form at https://a2a-peptides.ai/#contact.
MIT licence — see LICENSE.
Source: README.md at commit fcb59bf
Resolve Jurisdiction
Resolve a ship-to (e.g. 'US-CA', 'CA-ON', 'MX', 'EU-DE', 'UK', 'KR', 'JP', 'SG', 'CH') to the gate's jurisdiction (US · CA · MX · EU · UK · KR · JP · SG · CH; UK is the jurisdiction name; the ISO 3166-1 code is accepted as input, machine fields carry the ISO code and jurisdiction_label carries UK), the EU member and any state, provincial or cantonal overlay.
ship_torequiredResolve Actor
Resolve the actor class and channel. Classes: authorized_trading_partner and its members (manufacturer · repackager · wholesale_distributor · dispenser · third_party_logistics_provider; cosmetic_responsible_person · nhp_licence_holder on the non-drug pathways), prescriber, the referral classes patient and public, and agent (inherits the class of the credential it presents; none returns DENY_UNLICENSED_AGENT). Returns communication_class: trade_information or public.
credentialactor_classrequiredGate Transaction
The gate: allow, deny or require_rx for a substance (name, INN or unii:), a pathway (licensed_medicine · lawful_compounding · cosmetic · food_or_supplement · ruo_not_cleared), an actor class, a channel and a ship-to. Returns a frozen reason code, the rule-set version, the source page and a decision_id for the downstream tools.
channelpathwayrequiredship_torequiredsubstancerequiredcredentialactor_classrequiredGet Substance Record
One molecule: identifiers (INN, UNII, CAS, sequence hash), sourced aliases, class, one pathway row per jurisdiction × pathway, enforcement events, safety references. Every field carries its source page.
substancerequiredGet Pathway Status
The status of a substance on one pathway in one jurisdiction (frozen vocabulary), with effective date, rule-set version and source page.
pathwayrequiredsubstancerequiredjurisdictionrequiredGet Compounding Eligibility
Whether a substance may be lawfully compounded in a jurisdiction and under which list or standard (503A/503B, provincial, magistral, Specials), from the register.
substancerequiredjurisdictionrequiredGet Label And Indication
Label and indication pointers for a licensed presentation only (US package NDC, CA DIN, EU EMA number).
presentation_idrequiredGet Enforcement Watch
Dated, URL'd enforcement events for a substance or jurisdiction: warning letters, import alerts, shortage-list changes, committee votes, proposed and final rules, seizures, state notices.
sincesubstancejurisdictionSearch Cleared Items
Presentations that passed the gate for a jurisdiction, pathway and actor class (a query by substance, brand or holder; optional banner filter on the shelf of record). Only cleared statuses are returned; every item carries its availability block (banners, pos_count, product_urls).
limitqueryrequiredbannerpathwayactor_classdecision_idjurisdictionrequiredGet Item
Product record from gtinfetch.ai (signed); hub layer: seat, market, claim, price, availability. One authorised presentation by id (US package NDC, CA DIN, EU EMA number, KR MFDS item seq, CH Swissmedic authorisation/pack code, JP approved-list entry, or the catalogue id): brand, strength, form, route, device, pack, holder, status, offers (tenant is a parameter).
tenantdecision_idpresentation_idrequiredCompare Presentations
Compare two or more authorised presentations side by side (ids as for get_item).
decision_idpresentation_idsrequiredFind Licensed Supplier
Licensed parties for a presentation in a jurisdiction (tenant as a parameter). Takes the decision_id of an allow or require_rx decision from gate_transaction.
tenantdecision_idrequiredjurisdictionrequiredpresentation_idrequiredGet Availability
Availability of a presentation once gate_transaction has answered allow or require_rx (decision_id): the availability block — banners[] on the shelf of record with licence footnote, pos_count (chain points of sale from the CPG Knowledge Graph retailer registry, or licensed dispensers on the provider directory for medicines), product_urls[] (retailer product page, register page, holder page) — plus tenant offers.
tenantdecision_idrequiredpresentation_idrequiredGet Price
Price basis (list · contract · reimbursement) from a licensed party, once gate_transaction has answered allow or require_rx (decision_id).
tenantdecision_idrequiredpresentation_idrequiredGet Lot Coa
Certificate of analysis for a lawful lot of a presentation, where the pathway permits (decision_id required).
lotrequireddecision_idrequiredpresentation_idrequiredVerify Serialization
Verify a serialised pack (GTIN + serial + lot + expiry) against the serialisation regime of the jurisdiction (DSCSA · FMD · UK · KR; none-national elsewhere).
lotgtinrequiredexpiryserialrequiredjurisdictionrequiredCreate Order Intent
Create an order intent for a cleared item after the gate; the intent carries reason_code + rule_set_version and settles by x402 on peptides-x402.ai.
tenantship_toquantityrequireddecision_idrequiredpresentation_idrequiredA2A Handoff
Hand off over Agent-to-Agent (A2A). With an allow/require_rx decision: the order intent goes to the licensed counterparty's agent (envelope + card URL). With a deny for a patient, the public or an unauthorized actor: returns real licensed destinations from the provider directory (dispensers, prescribers) filtered by the decision's jurisdiction, state/province and practice scope — a referral, never a vial.
limitintent_iddecision_idpractice_scopecounterparty_card_urlGet Safety Label
Safety label pointers for licensed products (label page and the pharmacovigilance scheme of the jurisdiction).
substancerequiredjurisdictionrequiredLog Audit
Write the audit line for a gate decision or an order intent (returns the line id).
kindrequirednotereference_idrequired100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
{ "url": "https://mcp.a2a-peptides.ai/mcp", "transport": "streamable-http" }