Machine Library
Research and commerce agent for the Machine Library knowledge platform by Space Frontiers Company: answers research questions grounded in multi-billion scholarly and public-interest documents with citations, explains MCP and REST access, and sells prepaid API credit packages settled through Stripe.
AgentCard object — a capabilities object, a declared protocolVersion, and a well-formed skills array.
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://machinelibrary.ai/a2a
· transport JSONRPC
· protocol JSONRPC
https://machinelibrary.ai/a2a
· transport JSONRPC
· protocol JSONRPC
non-standard supportedInterfaces
Grounded research research
Answers a natural-language research question with a citation-backed synthesis over the Machine Library corpus (papers, books, patents, standards, Wikipedia, and social sources). Returns the answer plus the sources it drew on as artifacts. Requires an authenticated credential and is billed per turn; pass the prior task contextId to ask a follow-up in the same thread.
researchsearchragcitationsSearch access guidance search-access
Explains how to search Machine Library (MCP, REST, WebMCP), authenticate as an agent, and retrieve bounded source text with citations.
searchdocumentationPrepaid credit purchase credit-top-up
Sells fixed prepaid API credit packages ($5-$1000) settled with Stripe delegated payment tokens through ACP checkout sessions or MPP payment challenges.
commercepayments2026-09-19 from https://machinelibrary.ai/.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.