Monochromatic

Monochromatic

A TypeScript and Rust monorepo (148 workspace packages plus 18 standalone Rust crates) for developer tooling, coding-agent infrastructure, custom linters, desktop applications, web applications, and infrastructure automation.

Highlights

**Minimal MCP server**: [`mcp-stdio`](package/mcp/stdio/) implements Model Context Protocol revision 2026-07-28 over stdio, with three runtime dependencies: one workspace module, `valibot`, and `@valibot/to-json-schema`. The official `@modelcontextprotocol/sdk` pulled 5.8 MB and 17 dependencies at audit time (Express, Hono, jose, OAuth, rate limiting, SSE); this package implements only JSON-RPC 2.0, `server/discover`, `tools/list`, and `tools/call`.

**Coding-agent infrastructure**: [`claude-code-plugin`](package/claude-code-plugin/) packages Claude Code hooks and plugins (guardrail, statusline, bash output filtering, session spawning, housekeeping), and [`pi-plugin`](package/pi-plugin/) does the same for the Pi coding agent (advisor, guardrail, morph-compact, model selection). Harness-agnostic logic (session discovery, usage projection, shell-command analysis, terminal titles) lives in [`agent-harness-shared`](package/agent-harness-shared/).

**Pluggable Rust linter**: [`linter/rust`](package/linter/rust/) is a Rust linter written in Rust whose rules ship as plugins ([`rust-linter-plugin/builtin`](package/rust-linter-plugin/builtin/)) over shared crates ([`rust-linter-core`](package/rust-module/rust-linter-core/), [`rust-linter-pattern`](package/rust-module/rust-linter-pattern/)). It enforces the repo's per-file code-line budget (`max-lines`) and rustdoc coverage (`require-rustdoc`) across all crates. A sibling Gradle-based Kotlin linter lives in [`linter/kotlin`](package/linter/kotlin/).

**Policy-aware git tooling**: [`git-policy-cli`](package/git-policy/cli/) wraps git with policy guards (rejecting bulk staging and pathspec-less commits, guarding worktree removal) behind a side-effect-free policy authoring A