Bridge 1C LSP to MCP for Code Analysis

1C LSP MCP Skill is a cross-platform launch manager and MCP bridge that runs one or more instances of bsl-language-server - a real language server for the 1C:Enterprise BSL language - each scoped to a different 1C project. It exposes that language server's understanding of the codebase to LLM agents through both MCP and Claude-style SKILLs, so an agent gets accurate syntax diagnostics and code navigation instead of pattern-matching against training data. The project has two parts: lsp-skill-server, a console HTTP server with a web UI for managing projects and instances, and lsp-skill, a CLI for querying an already-configured project.

Use it when an agent is working in a 1C codebase and needs ground-truth answers: is this code syntactically valid, where is a given procedure defined, what calls it, and what does it call. It's the right tool specifically for BSL/1C projects - it wraps bsl-language-server, so it has no relevance outside that ecosystem. It is not a code editor or a deployment tool; it only manages language-server instances and exposes their analysis, with a documented near-term goal of trimming the verbosity of bsl-language-server's raw responses.

Each bsl-language-server instance runs independently per 1C project, with visible indexing progress, and can be tuned individually with its own JVM flags (useful for allocating more RAM to large 1C projects) and its own language-server configuration file (for example, different diagnostic exclusions per project). Core operations available through MCP or the SKILLs CLI include: diagnostics for syntax checking; codebase navigation via symbols, references, definition, workspace-symbols, incoming-calls, and outgoing-calls; and call hierarchy queries that answer "who calls this procedure?" and "what does this procedure call?". Code changes are pushed to the running language server efficiently rather than requiring a full re-index, and the whole manager can optionally run as a background service.

Releases ship prebuilt binaries for lsp-skill-server and lsp-skill for Windows, Linux, and macOS (both arm and x64), along with two matching skill/MCP pairs: 1c-check for syntax checking and 1c-lsp for code navigation. A sample mcp.json is included for configuring MCP clients (IDEs), and sample AGENTS.md files are provided to make LLM agents more reliable about invoking the MCP or SKILLs correctly - optional, but noted to help with some models. No Docker is required; the only runtime dependency is a JVM to run bsl-language-server itself. See the project's quickstart guide for the full setup sequence.

Developers and teams working on 1C:Enterprise/BSL codebases who want an LLM agent to have real, language-server-backed syntax checking and code navigation - rather than guesses - across one or several 1C projects at once.