Space Frontiers

★ 10

from SpaceFrontiers

Interfaces with the Space Frontiers API, enabling language models to interact with its data sources.

🔥🔥🔥🔥✓ VerifiedFreeAdvanced setup

⌁ labsco summary — our analysis, not the vendor's

What it is — a retrieval MCP server that gives AI agents searchable access to peer-reviewed papers, books, patents, Wikipedia, Reddit, Telegram, and YouTube, returning full text and citable source URIs.

What you get —

spacefrontiers_search_documents for papers/books/patents/Wikipedia, e.g. "find prior art on lithium-air batteries"
spacefrontiers_search_social for Reddit, Telegram, and YouTube transcripts
spacefrontiers_fetch_document for full text + references by DOI, arXiv, PMID, or ISBN
spacefrontiers_search_in_document for passage-level search inside long documents
Every hit carries source_uri, score, snippet, authors, and issued_date for clean citation

Requirements — the hosted server uses OAuth login (browser flow, no key paste) for Claude Code; for HTTP clients or self-hosting you need an API key from spacefrontiers.org.

Cost snapshot — the server is free and MIT-licensed. The hosted API requires a Space Frontiers account/key; the README doesn't list its pricing.

Setup effort — one-liner: claude mcp add --transport http spacefrontiers https://mcp.spacefrontiers.org, or self-host via uv sync.

Our take — A well-built research retrieval layer with strong citation metadata; the caveat is that the good path is the hosted service, so you're depending on Space Frontiers' backend and account.

Source: the project README — summarized 2026-07-08.

⌁ readme from github — mirrored (latest on GitHub ↗)

Space Frontiers MCP Server

A retrieval layer for AI agents over peer-reviewed papers, books, patents, Wikipedia, Reddit, Telegram, and YouTube. Returns full text and canonical source URIs for citation.

Hosted at https://mcp.spacefrontiers.org/ (Streamable HTTP transport, OAuth 2.1 with PKCE or Bearer API key).

Tools

All four tools are read-only, idempotent, and prefixed spacefrontiers_ to avoid collisions in multi-server agent setups.

Tool	When to use
`spacefrontiers_search_documents`	Peer-reviewed papers, books, patents, Wikipedia. Use for citations and prior art.
`spacefrontiers_search_social`	Reddit, Telegram channels, YouTube transcripts. Use for news and community discussion.
`spacefrontiers_fetch_document`	Full text + references for one canonical URI (DOI, arXiv, PMID, ISBN).
`spacefrontiers_search_in_document`	Passages within one document by query. Use for documents over ~20K tokens.

Every search hit includes source_uri, score, snippet, authors, issued_date, and content_size_tokens for typed parsing and citation.

Repository layout

mcp_server.py — Starlette + FastMCP entrypoint, OAuth well-known endpoints.
tools.py — four tools with Pydantic output schemas.
prompts.py — deep_research_agent prompt.
resources.py — spacefrontiers://document/{uri_b64} URI template.
auth.py — Bearer-token validation, Origin allowlist, MCP-Protocol-Version check.
client.py — async HTTP client for the v2 search API.
server.json — Official MCP Registry entry.
smithery.yaml — Smithery deployment config.
registry.json — in-house registry metadata.
tests/ — pytest unit tests.

Spec compliance

Transport: Streamable HTTP, stateless.
Auth: OAuth 2.1 with RFC 7591 Dynamic Client Registration; long-lived API keys also accepted.
Annotations: every tool declares readOnlyHint, idempotentHint, openWorldHint, destructiveHint:false.
Output schemas: every tool's outputSchema is auto-generated from a Pydantic return model.
Resources: one URI template registered for documents.
Spec versions accepted: 2025-03-26, 2025-06-18, 2025-11-25.

Development

uv sync
uv run pytest
uv run ruff check .

mcp-name: io.github.SpaceFrontiers/mcp

Copy & paste — that's it

{
  "mcpServers": {
    "spacefrontiers": {
      "url": "https://mcp.spacefrontiers.org",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

Install

The hosted server has its own /mcp install page with one-click links for Cursor, VS Code, and Smithery.

Claude Code (recommended)

claude mcp add --transport http spacefrontiers https://mcp.spacefrontiers.org

On first use a browser opens for OAuth login — no API key paste required.

Cursor / VS Code / Cline / Windsurf (HTTP)

{
  "mcpServers": {
    "spacefrontiers": {
      "url": "https://mcp.spacefrontiers.org",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

Get an API key at https://spacefrontiers.org/keys.

Self-hosted (stdio)

git clone https://github.com/SpaceFrontiers/mcp.git
cd mcp
uv sync
SPACE_FRONTIERS_API_KEY=sf_live_xxx uv run fastmcp run mcp_server.py