Jacobian MCP server
Executable mathematics and independent verification for AI agents.
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195 stars85 downloads/wk
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If you have run it, two minutes of your experience saves the next person an afternoon.
Jacobian tools
No tool declarations could be read from the package source. They show once the server is installed.
How Jacobian compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 92/100
- higher than 95% of 48,255 servers
- GitHub stars
- 195
- more than 95% of 28,688 servers
- Downloads a week
- 85
- more than 59% of 12,191 servers with a package
Release history: 2 versions in the registry since 2026-09-17, latest 2026-10-03, typically one every 16 days.
Install Jacobian in Claude Code, Cursor or VS Code
Runs npx -y jacobian on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add jacobian -- npx -y jacobian
What the publisher says
From the Jacobian repository's README, as published. We do not edit it. Read it on GitHub
English · 简体中文
Jacobian
An executable mathematical vocabulary for agents: discover one typed operation, run it, and compose its result.
Jacobian is an MCP server that gives AI agents a searchable vocabulary of typed mathematical operations. math.find matches a mathematical need or inspects one exact contract, and math.run executes it and returns its typed result. The same mathematical library is also available through a CLI and native Python API.
Each operation establishes one stable, reusable mathematical postcondition rather than prescribing a workflow or proof strategy. Results are exact where claimed and make approximation, incompleteness, or uncertainty explicit.
Jacobian's hypothesis is that mathematical reasoning benefits from an executable vocabulary of semantically scoped, bounded operations. Rather than exposing large domain solvers or precomposed workflows, Jacobian exposes mathematical primitives that agents can search for and compose into solutions beyond what any individual operation was designed to solve. The library supplies trustworthy mathematical moves; the reasoning model decides which moves to make, how to combine their results, and when to stop. Keeping the operations semantically narrow and domain-owned preserves that search space instead of baking one proof strategy or workflow into the tools themselves.
See Executable mathematical vocabulary for what semantic atomicity means and how the operation vocabulary grows.
Quickstart
Set up Jacobian for your agents with a single command. The setup command requires Node.js 20.17+, 22.13+, or 23.5+ and uvx on your PATH.
npx jacobian@latest setupChoose detected agents and review the changes before they are written. Setup does not install Node.js, Python, uv, or an agent. For automation, preview an explicit plan with npx jacobian@latest setup --codex --dry-run; use --yes only with explicit agent flags or --all.
To refresh an existing registration explicitly, run npx jacobian@latest upgrade and select the agents to update. The generated launcher pins the exact release resolved by npm.
Run the canonical Python MCP command without installing Jacobian globally:
uvx --from jacobian jacobian-mcpWhere an MCP host requires an npm command, the npm package is a deterministic carrier for that same command:
npx jacobian mcpFor a persistent installation:
python -m pip install jacobian
jacobian-mcpShortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Grade history
- 2026-09-19restoreB → Ascore 92
Jacobian: common questions
- Is Jacobian MCP server safe?
- Yes, by our scan: it is graded A (92/100). Read the Jacobian safety report
- How do I install Jacobian?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Jacobian need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Jacobian maintained?
- The last commit was 33 days ago (2026-10-02). The latest release is v0.23.0.
- How does Jacobian compare with other MCP servers?
- safety score 92/100 (higher than 95% of 48,255 servers); github stars 195 (more than 95% of 28,688 servers); downloads a week 85 (more than 59% of 12,191 servers with a package). Full comparison.