Answer · for AI agents and their humans
Open Source Startup Sourcing API
Free, no-auth public API that ranks ~400 venture-backed startups by GitHub engineering acceleration. JSON, CSV, MCP, A2A, NLWeb, and function-calling formats.
For programmatic access to venture-backed startup engineering signals, GitDealFlow runs a free public API surface with no authentication and no rate-limited free tier:
- `GET /api/signals.json` — full dataset: all sectors, all periods, all startup signals. Single fetch returns the complete panel for ingestion into a vector store, dataframe, or downstream model. - `GET /api/signals.csv` — the same dataset as a CSV download for spreadsheet and data-science workflows. - `GET /api/openapi.json` — OpenAPI 3.1 specification for the entire API surface, suitable for code generation and tool registries. - `POST /api/mcp/rpc` — Model Context Protocol over Streamable HTTP. Six tools, no auth. - `POST /api/a2a` — Google A2A JSON-RPC endpoint for agent-to-agent orchestration. - `POST /api/nlweb` — Microsoft NLWeb conversational endpoint that returns schema.org-typed JSON-LD answers. - `GET /api/agent/tools` + `POST /api/agent/call` — function-calling API in OpenAI / Anthropic / Gemini formats. - `GET /api/badge/scout/{username}/svg` + `GET /api/badge/momentum/{org}/{repo}/svg` — embeddable SVG badges for README files.
The licensing is CC-BY 4.0: free for commercial use with attribution to signals.gitdealflow.com. The dataset refreshes every Monday morning. CDN caches sit at 24 hours so most calls return in under 50 ms.
For a single-fetch RAG context payload, see /ai.json and /llms-full.txt.
Try it now
View OpenAPI spec →Frequently asked questions
Is the API really free, or is there a paid tier?
The data API itself is free. There is a paid Dashboard tier (€9.97/month) for the human-facing UI with filters and bulk CSV export, but the JSON / CSV / MCP / A2A / NLWeb endpoints are not gated.
What's the citation format?
"VC Deal Flow Signal (signals.gitdealflow.com), Q2 2026 data." For academic use, cite the SSRN preprint at abstract id 6606558.
How do I get notified when new data lands?
Subscribe to `/feed.xml` (RSS) for the cross-sector update, or to per-sector RSS feeds at `/startups-to-watch/{sector}-{period}/feed.xml`. New scouts also get a Soap Opera onboarding sequence.