ProtoMap
ProtoMap by HoundDog.ai statically maps every gRPC service, protobuf message, caller and field flow across your repositories and serves that graph to coding agents over MCP, so they stop re-grepping the codebase to find dependencies.
About ProtoMap
What ProtoMap is
ProtoMap, by HoundDog.ai, is a context engine for gRPC and Protobuf. It statically analyzes source code across repositories and builds a graph of services, RPC methods, messages, fields, call sites and field-level data flows, then serves it to coding agents over MCP, to engineers in a web workspace and to scripts via a CLI.
How it works
- Deterministic static analysis, no build step, no GPU; uncertain links are kept and flagged
- Go, Java, Kotlin, C#, Python, Rust, Swift, TypeScript and JavaScript gRPC stacks
- Read-only MCP tools: callers and callees, dependents and blast radius, field-flow tracing
- Setup commands for Claude Code, Codex, Copilot CLI, Gemini CLI, VS Code, Cursor and more
- Self-hosted server (Docker Compose + PostgreSQL), CLI, and CI scans on the main branch
Benchmark (company-run)
On 20 questions over nine synthetic repos with 2,380 gRPC services, HoundDog.ai reports 7.7x faster answers, 6.4x lower cost and 13x fewer tokens for Claude Code with ProtoMap, at 100% vs 98% accuracy.
Pricing
Local scanner free; Enterprise (cloud or on-prem, SSO, RBAC, audit logs, PR scans) on request.
Value & Audience
Value Proposition
Coding agents and engineers get an always-current, organization-wide map of gRPC services, callers and field flows from deterministic analysis, cutting the time, tokens and cost of cross-repo dependency questions.
Problem Solved
In large microservice codebases, finding every caller of a gRPC method or every service touched by a field means slow grepping across many repos and languages, which wastes agent tokens and misses indirect calls.
Tech Stack
Social & Links
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Gallery
Feedback & Roadmap
ProtoMap FAQ
Common questions about ProtoMap's features, pricing, and use cases
Is ProtoMap free to use?
ProtoMap has a free tier plus paid plans, starting at Local Scanner - Free - runs on your machine, local API graphs, any MCP-compatible agent, gRPC only. Plans listed: Local Scanner - Free - runs on your machine, local API graphs, any MCP-compatible agent, gRPC only; Enterprise - Custom (contact sales) - cloud or on-prem, SOC 2, SSO, RBAC, audit logs, GitHub/GitLab/Bitbucket integrations, CI scans on every PR.
What are some alternatives to ProtoMap?
Popular Developer Tools alternatives to ProtoMap include CodeSpy, DevOp and Global TTFB Checker.
ProtoMap appears in
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