Bun Documentation MCP

Overview

The Bun Documentation MCP is a specialized server that bridges the gap between AI assistants and the evolving ecosystem of the Bun JavaScript runtime. By exposing a curated, version‑synchronized set of Bun API references, it lets AI agents deliver precise, up‑to‑date guidance on Bun’s unique features—such as its built‑in bundler, transpiler, and HTTP server—without developers needing to manually consult external resources. This capability is especially valuable for teams that rely on AI‑driven code completion or debugging tools, as it ensures the assistant’s knowledge aligns with the exact Bun version in use.

At its core, the server serves two primary functions: document retrieval and search. It reads documentation files from the local directory, automatically falling back to a GitHub sync when the local copy is missing or outdated. This guarantees that the assistant can access the most recent API surface, including new primitives and deprecations. The integrated grep tool, powered by JavaScript regex, lets the assistant locate specific functions or classes across thousands of Markdown files in milliseconds, mimicking a developer’s own search workflow.

Key features include:

• Version‑aware documentation: The server detects the Bun runtime version and serves matching docs, preventing mismatches that often lead to confusing or incorrect suggestions.
• AI‑friendly context: Responses are structured with concise summaries, code snippets, and usage examples tailored for conversational AI consumption.
• Full text search: Regex‑enabled grep allows the assistant to answer “How do I use Bun’s HTTP server?” or “What is the syntax for defining a global variable in Bun?” with pinpoint accuracy.
• Built on Bun: Running natively on the same runtime it documents eliminates overhead and ensures minimal latency.

In real‑world scenarios, this MCP is a game changer for projects that adopt Bun as their primary build tool. A developer can ask an AI assistant to “Show me the best way to bundle a TypeScript app with Bun” and receive a step‑by‑step guide sourced directly from the latest documentation. Similarly, when troubleshooting performance issues, the assistant can reference the exact version of Bun’s caching API that is available in the current environment. Teams integrating continuous‑integration pipelines can also embed the server into automated code review bots, ensuring that suggestions remain consistent with the project’s runtime.

By embedding Bun’s documentation directly into AI workflows, developers gain a single source of truth that scales with their codebase. The server’s lightweight design and tight coupling to the Bun ecosystem make it a standout tool for anyone looking to harness AI assistance without sacrificing accuracy or up‑to‑date knowledge.