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.

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

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

License

MIT