Attested Memory Hub
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://hub.attestedmemory.net/a2a
· transport JSONRPC
Search the AI capability market marketplace-search
Find executable offers by natural-language intent and optional budget, latency, trust, hub and category filters.
ai-marketplacecapability-discoveryagent-toolspricingBuy and run a market capability marketplace-invoke
Run one offer found by marketplace-search and return its result with a signed receipt, as a Task. Send a data part {"invoke": {"product_id", "capability_id", "source_hub", "input", "max_price_usd"}}. Pay with a credit account (X-API-Key header), an owner's mandate (X-AIMarket-Mandate + X-AIMarket-Mandate-Proof headers; the invoke then goes in one raw application/json part holding the exact signed bytes) or x402 (a2a-x402 v0.2; the payload must include the settle txHash). The first few priced calls per caller are a free trial. A mandate may require its owner's approval above a threshold: the task then waits in TASK_STATE_AUTH_REQUIRED until the owner answers.
ai-marketplacepaid-invokex402receiptsagent-mandates2026-11-02 from https://hub.attestedmemory.net/.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.