Sanction MCP Server

The independent authorization plane for AI agents. Before an agent spends money, invokes a tool, touches a credential, or provisions a resource, it asks Sanction. Sanction approves, escalates to a human, or denies. Every decision is logged and auditable. Sanction belongs to no platform: one policy engine answers across model providers, payment rails, identities, and agent ecosystems.

People who work with agent governance and spend authorization and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 3 · #59 OF 204 MAINTAINED SECURITY · VERIFIED 2026-09-18

NOASSERTION · TypeScript servers · how we verify → /methodology

01 · Install Sanction

before you install - you'll need

Set SANCTION_API_URL, SANCTION_API_KEY before connecting.

Claude Code

claude mcp add ericlovold-sanction -- npx -y sanction-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "ericlovold-sanction": {
      "command": "npx",
      "args": [
        "-y",
        "sanction-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package sanction-mcp - unscoped; check the name against the project README before installing

registry namespace io.github.ericlovold is GitHub-verified and matches the repo owner

03 · What Sanction can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.9.0 · 2026-08-31

v0.8.0 made the wallet a thing you could paste, hand over, and verify. · v0.9.0 is the enforcement release: on governed paths, the engine no longer · depends on the agent's cooperation. · Interception · The MCP broker…

v0.8.0 · 2026-08-19

Where v0.7.0 made governance adoptable, v0.8.0 makes the wallet a thing you can paste, hand over, and verify. · Paste it · The wallet is a URL. speaks Streamable HTTP and authenticates with the agent key, so Cursor…

v0.7.0 · 2026-07-12

v0.6.0 made governance drop-in and provable. v0.7.0 makes it adoptable - you don't have to flip enforcement on to start. · Highlights · Observe mode - the do-nothing on-ramp. Set a pool to observe and the real decision…

04 · Who maintains Sanction

Sanction is maintained by ericlovold. It's the only MCP server we track from this author; the repo dates to Jun 2026.

05 · Facts

repository: github.com/ericlovold/sanction
website: https://getsanction.com/
category: security - ranked #59 of 204 actively-maintained security servers as of 2026-09-18.
release cadence: 7 releases in the last 90 days (latest 2026-08-31)
registry: io.github.ericlovold/sanction (active, first published 2026-06-22 · 9 versions)
packages: npm:sanction-mcp

06 · Sanction FAQ

What is Sanction?

Is Sanction still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 7 releases in the last 90 days. We re-verify nightly.

How do I install Sanction?

Run `npx -y sanction-mcp`. The README documents 2 environment variables (SANCTION_API_URL, SANCTION_API_KEY) to set first. Set SANCTION_API_URL, SANCTION_API_KEY before connecting. You can also paste the ready-made client config above.

Does Sanction run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Sanction

Alternatives to Sanction

Maintained security servers if Sanction isn't the fit.

Pairs well with

Servers that cover what Sanction doesn't - only shown when the pairing reason fits the companion.

More security MCP servers · Haldir · Prodcheck · Flagrix · Aso Audit MCP · Clover Public

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