agent-lsp

MCP server for language intelligence. Give AI agents structured access to language servers: go-to-definition, find-all-references, rename, diagnostics, completions, call hierarchy, and speculative execution.

66 tools. 23 agent workflows. 30 CI-verified languages. Single Go binary.

Why

AI coding agents navigate code with grep and file reads. This wastes 5-34x more tokens than necessary and produces 92-99% false positives on symbol lookups. Language servers already have the answers; agent-lsp makes them accessible via MCP.

Install

pip install agent-lsp

Or via other channels:

brew install blackwell-systems/tap/agent-lsp    # macOS/Linux
npm install -g @blackwell-systems/agent-lsp     # npm
curl -fsSL https://raw.githubusercontent.com/blackwell-systems/agent-lsp/main/install.sh | sh

Usage

# Start with auto-detection
agent-lsp

# Explicit language server
agent-lsp go:gopls typescript:typescript-language-server,--stdio

# HTTP mode
agent-lsp --http --port 8080 go:gopls

Then configure your AI tool's MCP settings to point at agent-lsp.

What it does

66 tools covering navigation, analysis, refactoring, diagnostics, formatting, speculative execution, composite exploration, safe editing, build, test, and more
23 agent workflows (skills) that encode correct multi-step operations: rename safely, analyze blast radius, simulate edits before applying
30 CI-verified languages: Go, Python, TypeScript, Rust, Java, C, C++, C#, Ruby, PHP, Kotlin, Swift, Scala, Zig, Lua, Elixir, Gleam, and more
Speculative execution: preview edits in memory, see what breaks before touching disk
Phase enforcement: blocks out-of-order operations so agents follow correct workflows

Token savings

Measured across 5 codebases (Go, TypeScript, Python):

Codebase	Lines	Savings
agent-lsp	15K	5x
Hono (TypeScript)	24K	13x
FastAPI (Python)	33K	2x
Next.js (TypeScript)	196K	5x
HashiCorp Consul (Go)	319K	34x

Full experiment: agent-lsp.com/token-savings

Works with

Claude Code, Cursor, Windsurf, GitHub Copilot, and any MCP-compatible client.

Release files for agent-lsp 0.19.5

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distributions (wheels)

Table of built distributions (wheels) for agent-lsp 0.19.5
File	Interpreter	ABI	Platform	Reset
agent_lsp-0.19.5-py3-none-win_arm64.whl 10.8 MB Sep 22, 2026	Python 3	none	Windows ARM64	Details
agent_lsp-0.19.5-py3-none-win_amd64.whl 6.0 MB Sep 22, 2026	Python 3	none	Windows x86-64	Details
agent_lsp-0.19.5-py3-none-manylinux2014_x86_64.whl 12.0 MB Sep 22, 2026	Python 3	none	Linux glibc 2.17+ x86-64	Details
agent_lsp-0.19.5-py3-none-manylinux2014_aarch64.whl 11.4 MB Sep 22, 2026	Python 3	none	Linux glibc 2.17+ ARM64	Details
agent_lsp-0.19.5-py3-none-macosx_11_0_arm64.whl 11.7 MB Sep 22, 2026	Python 3	none	macOS 11.0+ ARM64	Details
agent_lsp-0.19.5-py3-none-macosx_10_12_x86_64.whl 12.1 MB Sep 22, 2026	Python 3	none	macOS 10.12+ x86-64	Details

Total release size: 64.1 MB

Release files / agent_lsp-0.19.5-py3-none-win_arm64.whl

Download URL	agent_lsp-0.19.5-py3-none-win_arm64.whl
Size	10.8 MB
Tags	Python 3 Windows ARM64
SHA-256 checksum How to use checksums	`eca19d271d60612f2b0e5c96bbc947dda431730483d7250a6633dc72168771cd`
BLAKE2b-256 checksum How to use checksums	`f73809f3410e6bd637263e0142fd7113e366376b229c81459610a67ddebfdba7`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / agent_lsp-0.19.5-py3-none-win_amd64.whl

Download URL	agent_lsp-0.19.5-py3-none-win_amd64.whl
Size	6.0 MB
Tags	Python 3 Windows x86-64
SHA-256 checksum How to use checksums	`40bf3e6310942982c3a91959ebdd67ab19f7568d4184b4268990f5c04969cde3`
BLAKE2b-256 checksum How to use checksums	`b171e3e1c265cc94fb7a8af0c4f7ae707ad7c2b7825f5e48dbe54baf9733a0a2`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / agent_lsp-0.19.5-py3-none-manylinux2014_x86_64.whl

Download URL	agent_lsp-0.19.5-py3-none-manylinux2014_x86_64.whl
Size	12.0 MB
Tags	Linux glibc 2.17+ x86-64 Python 3
SHA-256 checksum How to use checksums	`725d7ebc278fad58154197ec3d675470fff3b628b46b3ca5e00f3b2ef1ab9c24`
BLAKE2b-256 checksum How to use checksums	`cab026630f1917d17961992648e10e659db3ed005991ec047e4456c150ecaea1`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / agent_lsp-0.19.5-py3-none-manylinux2014_aarch64.whl

Download URL	agent_lsp-0.19.5-py3-none-manylinux2014_aarch64.whl
Size	11.4 MB
Tags	Linux glibc 2.17+ ARM64 Python 3
SHA-256 checksum How to use checksums	`7665dd29e72666b9a838f11318330bf98cd812c22835ac00db5b87d99eae1e5e`
BLAKE2b-256 checksum How to use checksums	`5b763e860c6d953ab8479abbec38bd0866ab0cf3ac81f9318d0a9f2826dfa514`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / agent_lsp-0.19.5-py3-none-macosx_11_0_arm64.whl

Download URL	agent_lsp-0.19.5-py3-none-macosx_11_0_arm64.whl
Size	11.7 MB
Tags	Python 3 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`ce763a5d24b934fd923d9ea48d67449ba84a1c234564177d9ef4b6fd3d69ab7e`
BLAKE2b-256 checksum How to use checksums	`e2abc5253a69801f667463188d3695f4875ea84e31e968255e56f6107afe6746`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`

Release files / agent_lsp-0.19.5-py3-none-macosx_10_12_x86_64.whl

Download URL	agent_lsp-0.19.5-py3-none-macosx_10_12_x86_64.whl
Size	12.1 MB
Tags	Python 3 macOS 10.12+ x86-64
SHA-256 checksum How to use checksums	`3f15192e1535b2e06393a16b84bedc4e47116ccfd5504cc519b351a956142c8e`
BLAKE2b-256 checksum How to use checksums	`5ec77b47db3dbaff3139d450e63bf9a00cf631a3f56f641bc3c076b03ee08aaa`
Upload date	Sep 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`