Bit Lantern

Bit Lantern MCP Registry packaging

This repository contains the inspectable packaging metadata and locked build recipe used to publish Bit Lantern to the official MCP Registry.

Bit Lantern is a local, read-only MCP server for structural code navigation. It builds a disposable SQLite index inside each workspace and provides bounded definitions, exact source ranges, references, static call relationships, architecture summaries, and edit-impact evidence to connected coding agents.

Install

Use an MCP Registry client that supports MCPB packages and choose the release asset matching your operating system and CPU architecture. Each bundle starts:

bitlantern mcp

The current Preview 30 target matrix is:

Preview binaries for macOS and Windows are not yet platform-signed. Review the installation and platform-safety documentation and do not weaken operating-system or organization security controls.

Reproduce the MCPB artifacts

The build is locked to Bit Lantern 1.0.0-preview.30, the exact signed public release-manifest digest, all four source-archive digests and byte lengths, and @anthropic-ai/mcpb 2.1.2.

Requirements: Bash, curl, jq, Node.js/npm, sha256sum, tar, and unzip.

./scripts/build-mcpb.sh

(cd dist/packages && sha256sum --check SHA256SUMS)

The script downloads only immutable Preview 30 release objects from download.atlasscout.dev, verifies them before extraction, and packages one native target per .mcpb file. Generated artifacts remain under dist/ and are not committed to Git.

For directories that accept only one downloadable MCPB artifact per listing, build the universal package:

./scripts/build-smithery-mcpb.sh

That package contains Brotli-compressed copies of three verified native executables. Its Node.js launcher selects the matching target, verifies the decoded byte length and SHA-256, and runs it from a private temporary directory that is removed on exit. It supports macOS/ARM64, Linux/x86-64, and Windows/x86-64 and requires Node.js 18 or newer and a writable temporary directory. No startup download is required. Smithery currently limits MCPB uploads to 25 MiB, so Linux/ARM64 users should install its target-specific package from the official MCP Registry or GitHub release. Bit Lantern itself remains a native executable; the launcher is used only for cross-platform MCPB distribution.

Run the launcher's integrity, argument-forwarding, and cleanup checks with node --test smithery/launcher.test.cjs before building the final release bundle.

The official MCPB CLI records the packaging time in each ZIP. Rebuilding verifies and packages the same native inputs, but does not promise a byte-identical .mcpb digest. The immutable release-asset digests used by MCP clients are recorded in server.json and RELEASE_EVIDENCE.md.

The source archives additionally provide OpenPGP signatures, Sigstore bundles, SPDX SBOMs, and aggregate checksums through the signed public release manifest.

Licensing boundary

The packaging metadata, build scripts, and repository documentation are licensed under Apache License 2.0. Bit Lantern itself is separate proprietary software. The executables and product materials inside MCPB release assets remain governed by the Bit Lantern Proprietary License and EULA included in every bundle.

Installing or using an MCPB asset constitutes use of the proprietary runtime, not a grant under this repository's Apache license.

Privacy and support

Bit Lantern indexes locally. It does not transmit repository paths, symbols, queries, tool calls, editor state, Git remotes, index metrics, or source code to the Bit Lantern licensing service. Navigation results are sent to the coding agent the user connects.

• Product documentation: https://atlasscout.dev/docs
• Privacy policy: https://atlasscout.dev/legal/privacy
• Support and security: