toolc

The optimizing compiler for agentic tools

Point toolc at your MCP servers and REST APIs. Get back one endpoint serving a smaller, smarter tool surface: cheaper for every agent that connects, more accurate on every task, adaptive and logged.

Free tier included; usage-based pricing after.
5×
cheaper per completed task, accuracy matched
90 → 100%
multi-source arbitration, raw vs compiled
137 → 6
tool definitions after compilation

Measured on our public benchmark: 60 tasks, 1,800 judged trials, two agent models, six live servers.

How it works

  1. Connect. MCP servers or REST APIs composed straight from OpenAPI specs.
  2. Compile. Descriptions rewritten for agents, tool families consolidated into facades, the surface compressed behind search when you want maximum cost savings.
  3. Serve. One endpoint for Claude, ChatGPT, or other MCP client, with auto-compaction, full-payload logs with live tail, and per-tool kill switches for maximum flexibility.

The compiler engine is open source (Apache-2.0)
Read the paper or the blog.

toolc: the optimizing compiler for agent tool surfaces