@agz-yazilim/agz-rust-mcp

Standalone stdio MCP server for Rust correctness, by AGZ Yazılım. It gives MCP clients compiler-backed tools for Rust work: bounded Cargo check/Clippy/tests/docs, static audit, crate and docs lookup, and Rust Analyzer-backed symbols, references, definitions, hierarchies, and write-free rename/refactor edit packages. Cargo/rustc output is authoritative; analyzer and audit output is advisory.

The npm package is a thin, zero-dependency Node launcher. It runs the pinned, checksum-verified release binary; it does not bundle or modify it.

Published as @agz-yazilim/agz-rust-mcp. If the @agz-yazilim npm scope is unavailable at publish time, the same wrapper is published unscoped as agz-rust-mcp; substitute that name in the commands below.

Quick start

npx -y @agz-yazilim/agz-rust-mcp

The first run resolves the server binary, verifies it, and caches it under ~/.cache/agz-rust-mcp/npm/<version>-<platform>/. Later runs reuse the cache. Print the wrapper version without downloading anything:

npx -y @agz-yazilim/agz-rust-mcp --agz-npm-version
# or
AGZ_RUST_MCP_NPM_VERSION=1 npx -y @agz-yazilim/agz-rust-mcp

OpenCode2

opencode.jsonc:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "servers": {
      "rust": {
        "type": "local",
        "command": ["npx", "-y", "@agz-yazilim/agz-rust-mcp"],
        "cwd": ".",
        "codemode": false,
        "timeout": {
          "startup": 30000,
          "catalog": 30000,
          "execution": 720000
        }
      }
    }
  }
}

Codex

~/.codex/config.toml:

[mcp_servers.agz-rust-mcp]
command = "npx"
args = ["-y", "@agz-yazilim/agz-rust-mcp"]

To skip npx startup on every launch, install the wrapper once and call the installed command directly:

npm install --global @agz-yazilim/agz-rust-mcp

[mcp_servers.agz-rust-mcp]
command = "agz-rust-mcp"

Binary resolution and integrity

Resolution order:

1. AGZ_RUST_MCP_BIN — absolute or relative path to an existing server binary. If set but missing, the launcher fails closed instead of downloading.
2. agz-rust-mcp on PATH (this launcher's own path is skipped).
3. Pinned GitHub release download from ugur-murat-alt/agz-rust-mcp.

Download safety: HTTPS only (non-HTTPS redirects are refused), each download is bounded to 64 MiB, the .sha256 asset is checked before extraction, the archive is extracted with the system tar using an argv array (no shell), the extracted binary must be a regular file and is set to 0755, its --version must report the wrapper version, and it is atomically renamed into the cache. A single-flight lock prevents concurrent launches from double-downloading.

Release mapping: version 0.2.x maps to the already published agz-rust-coder-v0.2.0 release (agz-rust-coder-<platform>.tar.gz); version 0.3.0 and later use agz-rust-mcp-v<version> and agz-rust-mcp-<platform>.tar.gz. Platform keys are linux-x86_64, macos-arm64, and windows-x86_64.

| Variable | Purpose | | --- | --- | | AGZ_RUST_MCP_BIN | Use an existing server binary instead of downloading. | | AGZ_RUST_MCP_NPM_VERSION | Truthy value prints the wrapper version and exits without downloading. |

Fallback installation

If the wrapper cannot run on your platform (other architectures, offline hosts, or restricted CI), install the server directly:

• Release installer: ./install.sh from https://github.com/ugur-murat-alt/agz-rust-mcp
• crates.io: cargo install agz-rust-mcp
• Manual release archive: download agz-rust-mcp-<platform>.tar.gz and its .sha256 from https://github.com/ugur-murat-alt/agz-rust-mcp/releases
• From source: cargo build --release -p agz-rust-mcp --locked

License

MIT. Repository and documentation: https://github.com/ugur-murat-alt/agz-rust-mcp. AGZ Yazılım product.