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cosign — required for loading plugins from OCI registries (oci:// URLs).
hyper-mcp verifies the cryptographic signature of every OCI plugin before loading it to ensure the plugin has not been tampered with and comes from a trusted source. This verification is performed by shelling out to the cosign CLI, which must be installed and available on your PATH.
Install cosign by following the official instructions: https://docs.sigstore.dev/cosign/system_config/installation/
Note: If you only use
file://,http://,https://, ors3://plugin URLs, cosign is not needed. You can also bypass signature verification for OCI plugins by settinginsecure_skip_signature: truein your config or theHYPER_MCP_INSECURE_SKIP_SIGNATURE=trueenvironment variable, but this is not recommended for production use.
hyper-mcp is published on Homebrew for macOS and Linux in two places:
Homebrew core — no tap setup required:
brew install hyper-mcp
Our own tap (hyper-mcp-rs/tap) — bumped automatically on every GitHub Release, so it picks up new versions immediately:
brew install hyper-mcp-rs/tap/hyper-mcp
Both install the same binary. Prefer the core formula unless you want the absolute latest release the moment it ships.
Download the latest release for your platform from GitHub Releases:
Chose the version that you want and download the architecture-specific binary.
| Platform | Architecture | Download |
|---|---|---|
| macOS | Apple Silicon (ARM64) | hyper-mcp-aarch64-apple-darwin.tar.gz |
| Linux | ARM64 | hyper-mcp-aarch64-unknown-linux-gnu.tar.gz |
| Linux | x86_64 | hyper-mcp-x86_64-unknown-linux-gnu.tar.gz |
| Windows | x86_64 | hyper-mcp-x86_64-pc-windows-msvc.zip |
macOS / Linux:
Donwload the .tar.gz file, extract it, and place hyper-mcp in /usr/local/bin.
Windows:
Download the .zip file, extract it, and place hyper-mcp.exe somewhere on your PATH.
If you have Rust installed, you can install hyper-mcp directly from crates.io:
cargo install hyper-mcp
stdio transport protocol