Machine Library

• 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.

  research search rag citations
  2 examples

  • What is the current evidence on microplastic accumulation in human tissue?
  • Summarize recent approaches to perovskite solar cell stability.

  In: text/plain · Out: text/markdown, application/json

• Search access guidance search-access

  Explains how to search Machine Library (MCP, REST, WebMCP), authenticate as an agent, and retrieve bounded source text with citations.

  search documentation
  1 example

  • How do I search Machine Library from my agent?
• Prepaid 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.

  commerce payments
  1 example

  • Buy $10 of Machine Library API credits

Interfaces

Capabilities

Streaming

Yes

Push notifications

No

Extended card for signed-in callers

Not declared

• https://github.com/google-agentic-commerce/AP2/tree/v0.1.0
• https://github.com/google-agentic-commerce/ap2/v1

Security and formats

Requires

Not declared

Schemes

bearer (unknown), apiKey (unknown)

Accepts

text/plain

Returns

text/plain, application/json