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FirstCall turns a verified API request into a local MCP tool that runs from the included native executable.
This release completes the native handoff: verify a request, export its tool package, connect it to an MCP client, and call the API again without generating code or installing npm dependencies. Optional query and header values can be omitted during verification and later tool calls. Required values and unknown placeholders still fail before HTTP.
The companion CLI now includes package-native and connect. connect --package /path/to/tool validates a relocated package and prints current connection paths without sending a request or changing its files. Authentication values stay out of exported packages; responses retain the runtime's redaction and bounded request policy.
Download either archive below for Apple Silicon macOS. It contains FirstCall.app, its companion CLI, and installation instructions. Move the application to its intended location before exporting tools. The bundle is ad-hoc signed for integrity and is not Apple notarized.
The archives were built and smoke-tested by the final main CI. release-manifest.json identifies the source commit and file hashes; SHA256SUMS.txt lets you check the download. The source CI runs Linux CLI and macOS desktop tests, real loopback API verification, actual MCP calls, relocation, redaction, and error-path checks. Both the debug executable and the executable inside the packaged app are exercised.
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