AuthiChain
An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.
https://authichain.com/mcp
· transport HTTP+JSON
· protocol https://authichain.com/api/v1/agent-verify
· transport HTTP+JSON
· protocol https://authichain.com/api/a2a
· transport JSONRPC
Paid evidence check paid-evidence-check
Paid evidence check for agents: signed record, machine-readable verification result, explicit unknowns, and a settlement receipt. A valid signature is not real-world truth.
verificationauthenticityevidenceQRON Launch subscription qron-launch-subscription
A person, not this agent, pays QRON Launch. Monthly is 19 USD. Annual is 190 USD. This card does not create a Checkout Session and does not charge. Send the person to the confirm page.
subscriptionqroncheckout2026-11-02 from https://authichain.com/.well-known/agent-card.json,
HTTP 200. The body was saved verbatim and is the sole source for
everything on this page — no field is inferred.
View the captured card.
Providers change what they serve; if this card has moved or changed shape,
the provider profile carries the
current state as of the last build.
Work with this as data
Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.