x402 Trinity MCP Server

A drop-in fetch replacement that lets an AI agent pay for things by itself - with hard spending limits, no hosted wallet service, and no changes to the agent's own code. It runs locally over stdio via the published package.

People who work with cloudflare workers, constant time and cryptography 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 · #27 OF 318 MAINTAINED FINANCE · VERIFIED 2026-09-18

NOASSERTION · TypeScript servers · how we verify → /methodology

01 · Install x402 Trinity

before you install - you'll need

Set X402_PRIVATE_KEY, X402_MAX_PER_REQUEST, X402_TOTAL_BUDGET, X402_BUDGET_FILE, X402_ALLOW_HOSTS, X402_NETWORKS before connecting.

Claude Code

claude mcp add devmster-x402-trinity -- npx -y x402-trinity

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "devmster-x402-trinity": {
      "command": "npx",
      "args": [
        "-y",
        "x402-trinity"
      ]
    }
  }
}

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

repo age created 2026-08-25 - young repo, little track record yet

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

npm package x402-trinity - unscoped; check the name against the project README before installing

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

03 · What x402 Trinity can do

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

Latest releases

v0.1.1 · 2026-08-25

bash · npm install x402-trinity · pip install x402-trinity · Wording change to the startup notice. No behaviour change - the buyer, seller, MCP server and Python client all work exactly as in 0.1.0.

v0.1.0 · 2026-08-25

A drop-in fetch replacement that lets an AI agent pay for things by itself - hard spending limits, no hosted wallet, no changes to the agent's own code. · bash · npm install x402-trinity · Base mainnet + USDC. Other…

04 · Who maintains x402 Trinity

x402 Trinity is maintained by devmster. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/devmster/x402-trinity
website: https://github.com/devmster/x402-trinity
category: finance - ranked #27 of 318 actively-maintained finance servers as of 2026-09-18.
release cadence: 2 releases in the last 90 days (latest 2026-08-25)
registry: io.github.devmster/x402-trinity (active, first published 2026-08-26 · 8 versions)
packages: npm:x402-trinity

06 · x402 Trinity FAQ

What is x402 Trinity?

Is x402 Trinity still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 2 releases in the last 90 days. We re-verify nightly.

How do I install x402 Trinity?

Run `npx -y x402-trinity`. The README documents 6 environment variables (X402_PRIVATE_KEY, X402_MAX_PER_REQUEST, X402_TOTAL_BUDGET…) to set first. Set X402_PRIVATE_KEY, X402_MAX_PER_REQUEST, X402_TOTAL_BUDGET, X402_BUDGET_FILE, X402_ALLOW_HOSTS, X402_NETWORKS before connecting. You can also paste the ready-made client config above.

Does x402 Trinity 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 x402 Trinity

Alternatives to x402 Trinity

Maintained finance servers if x402 Trinity isn't the fit.

Pairs well with

Servers that cover what x402 Trinity doesn't - only shown when the pairing reason fits the companion.

More finance MCP servers · DERO MCP Server · Onyx MCP · Kura · Banco MCP

More TypeScript MCP servers · SendGrid MCP Server · Clawops · Oorep MCP · Dgmo MCP · see all