ProtoMap

Key facts: ProtoMap launched on Product Hunt on November 10, 2026, from HoundDog.ai. It is a context engine for gRPC and Protobuf: a deterministic Rust scanner maps every service, API and field across your monorepos and microservices, refreshed on every commit, and gives that graph to engineers and coding agents over MCP. Ask in plain English which services call a method, or what breaks if you remove one. The maker's benchmarks report 13x fewer tokens, 7.7x faster answers and 6.4x lower cost, with accuracy up. It works with any MCP agent (Claude Code, Cursor, Codex, Copilot, OpenCode) and your own AI provider (Anthropic, OpenAI, Google).

Plans: Free for local use: install the self-hosted platform and CLI with Docker, scan your repositories, and query in plain English. The enterprise version keeps the graph fresh across the whole organization through CI.

Best for: Teams with gRPC microservices whose agents burn tokens rediscovering dependencies. Who should skip it: anyone with no gRPC or Protobuf in their codebase.

Pros

• Free for local use, self-hosted, with no GPU needed
• A deterministic graph from the code itself: no stale instruction files to maintain
• Works with every major MCP coding agent and your own AI provider
• Maker benchmarks claim 13x fewer tokens and 7.7x faster answers

Watch out for

• Only gRPC and Protobuf today: other protocols are still coming
• Self-hosting needs Docker, 4 GB of RAM and 20 GB of disk
• Benchmark figures are the maker's own, not independently verified

Best for

Teams with gRPC microservices whose agents burn tokens rediscovering dependencies. Who should skip it: anyone with no gRPC or Protobuf in their codebase, or a solo developer on one small repo.

Pricing

Free for local use (self-hosted). Enterprise version keeps the org-wide graph fresh via CI: check the official site for pricing.

FAQs

What is ProtoMap? A context engine for gRPC and Protobuf: it scans your source code, maps every service, API and field, and gives that graph to engineers and coding agents over MCP.

Is ProtoMap free? Yes, for local use: install the self-hosted platform and CLI for free and scan the code on your machine. The enterprise version covers the whole organization through CI.

Which agents does it work with? Any agent that speaks MCP: Claude Code, Cursor, Codex, GitHub Copilot, OpenCode and more.

What can I ask it? Plain-English questions like which services call a method, or what breaks if you remove an API field, with the blast radius across every repo.