ucsandman/declick

declick

A compiler for the interface your agent already has: the shell. MCP makes an agent carry every tool's schema on every turn; declick compiles an API, an MCP server, or a database once into named verbs the model loads one at a time, and every verb returns one envelope with five exit codes. Ten engines, zero runtime dependencies, Node 24.

The saving is measured, not claimed: against nine real MCP servers (258 tools), the raw tool listing an MCP client puts in context is 236,818 bytes and declick describe is 58,309, a 4.1x reduction. node scripts/bench-tokens.mjs reproduces it on your own adapters; the method and the caveats are in docs/bench.md.

Quickstart

Requires Node 24 or newer. An older Node exits 1 with one line naming the version it found, from either entry point, instead of a stack trace.

npm i -g declick
declick setup
declick add https://petstore3.swagger.io/api/v3/openapi.json --name petstore
declick run petstore describe
declick run petstore get-user-by-name user1 --fields username,email
declick run petstore get-pet-by-id 7 --dry-run

declick setup puts ~/.declick/bin on PATH, adopts your agent's existing MCP servers as adapters, adds a rules block to its instruction file, and (Claude Code only) installs a hook that nudges the model toward the adapter; `declick setu