Agent Lsp MCP server
Orchestrates language servers into 65 code-intelligence tools across 31 languages, token-optimized.
130 stars164 downloads/wk
Reviews
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Agent Lsp tools
No tool declarations could be read from the package source. They show once the server is installed.
Public scan report
scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it
- Code scan1 source files scanned25/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitylocal package, no credentials required12/15
- Maintenancelast push 0 days ago15/15
- Maintainer identityregistry namespace matches repository owner6/10
What the publisher says
From the Agent Lsp repository's README, as published. We do not edit it. Read it on GitHub
Code intelligence infrastructure for AI agents. 65 tools, 31 CI-verified languages, 24 agent workflows. Single Go binary.
curl -fsSL https://raw.githubusercontent.com/blackwell-systems/agent-lsp/main/install.sh | sh && agent-lsp initWhat is it?
agent-lsp is an MCP server that orchestrates existing LSP servers (gopls, rust-analyzer, jdtls, etc.) into agent-native workflows.
Not an LSP server — it's an orchestration layer that manages language servers and exposes batch operations, speculative editing, and multi-step workflows via MCP tools.
Architecture:
- Language servers (gopls, rust-analyzer, etc.) → provide code intelligence
- agent-lsp (MCP server) → orchestrates workflows, maintains warm runtime
- AI agents → consume via MCP protocol
Why agent-lsp?
Persistent warm runtime Language servers stay indexed across agent sessions. First session: indexes workspace (~10s for typical projects). Subsequent sessions: instant. No cold-start penalty on each request.
Batch operations blast_radius → one call returns all exports + all callers (test vs non-test partitioned). Without orchestration: 20+ sequential LSP calls.
Speculative editing simulate_edit → preview changes in memory, check diagnostic delta, apply or discard. Test edits before touching disk.
Workflow orchestration 24 skills that chain LSP operations into complete pipelines:
- /lsp-refactor → impact analysis → preview → apply → verify build → run tests
- /lsp-safe-edit → preview → diagnostic diff → apply if safe
- /lsp-verify → LSP diagnostics → build → test suite
Multi-language, single session One agent-lsp process routes .go to gopls, .ts to tsserver, .py to pyright. No reconfiguration between projects. Session persists across files and repositories.
[!TIP]
Token-optimized output: Tool responses encoded in GCF instead of JSON. 30-84% fewer tokens depending on tool (up to 92.7% with session dedup). 100% LLM comprehension on every frontier model, 91.2% on complex code graphs where JSON averages 54.1%. See below for measured savings per tool.
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Install directly
Runs npx -y @blackwell-systems/agent-lsp on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add agent-lsp -- npx -y @blackwell-systems/agent-lsp
Agent Lsp: common questions
- Is Agent Lsp MCP server safe?
- Yes, by our scan: it is graded A (89/100). Read the Agent Lsp safety report
- How do I install Agent Lsp?
- It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
- Does Agent Lsp need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Agent Lsp maintained?
- The last commit was in the last day (2026-09-20). The latest release is v0.19.1.
- What can I use instead of Agent Lsp?
- Servers from other publishers that do the same job: mcptoon MCP server, llmtrim MCP server and Skillsmith MCP server. Compare all Agent Lsp alternatives.
Alternatives to Agent Lsp
Same job from other publishers: the closest match first, then the best rated.
- mcptoonMCP tools + agent skills in one zero-dependency CLI: 71,929 -> 581 tokens (-99.2%, measured).not reviewedEstablishedA
- llmtrimMCP server and proxy that compresses LLM prompts, tool output, and replies to cut token cost.not reviewedEstablishedA
- SkillsmithShare agent skills across your team, scan them for risk, and track what's actually used.not reviewedEstablishedB
Tetrees MCPOwn, grow and trade portable agent intelligence via TAIP/1 Packs and MCP.not reviewedEstablishedB- rag-ratRepository intelligence, code graph, history, papertrail, and cross-agent memory for coding agents.not reviewedGrowingB
