XFuel

io.github.XFuel-Lab/xfuel-mcp

7/8 checks passed
Runs locally
3 secrets
★ 1 GitHub stars
Updated 2026-07-09
Health score 58

About XFuel

XFuel is an MCP server published by the GitHub account XFuel-Lab. Submit AI inference to XFuel, pay per task (USDC via x402 or TFUEL), fetch/verify ZK proofs.

It runs on your own machine: your AI client starts it from the npm package xfuel-mcp at version 0.1.1.

It asks for 3 secrets: XFUEL_API_KEY, XFUEL_MCP_AUTH_TOKEN and XFUEL_PAYER_PRIVATE_KEY. Give it a key with the least access that still works.

Version 0.1.1 was published on 9 July 2026, and the source code is public, so you can read it before installing.

Written from the registry entry. 9 automated checks on the registry entry and the package code: 7 pass, 1 warn, 0 fail, 1 info. How we check.

What it asks for

Variable	Required	Secret	Description
`XFUEL_API_URL`	No	No	XFuel API base URL. Defaults to the hosted testnet demo.
`XFUEL_API_KEY`	No	Yes	API key sent as X-API-Key. Defaults to the shared public demo key.
`XFUEL_MCP_AUTH_TOKEN`	No	Yes	Optional bearer token required on the HTTP transport (Authorization: Bearer <token>).
`XFUEL_RPC_URL`	No	No	Theta RPC URL enabling verify_proof's optional on-chain nullifier read.
`ZK_VERIFIER_ADDRESS`	No	No	ZKVerifierSP1 contract address (paired with XFUEL_RPC_URL).
`XFUEL_PAYER_PRIVATE_KEY`	No	Yes	Funded payer private key that enables the pay_with_usdc tool. Moves USDC — keep secret; use a low-balance wallet.

Checks

Check	Result	Detail
Source repository linked	Pass	https://github.com/XFuel-Lab/xfuel-protocol
Version pinned	Pass	Every package has an explicit version
Secrets requested	Warn	Asks for 3 secrets: XFUEL_API_KEY, XFUEL_MCP_AUTH_TOKEN, XFUEL_PAYER_PRIVATE_KEY
Known package registry	Pass	All packages come from npm, PyPI, OCI, NuGet or MCPB
Namespace ownership	Info	Name verified via GitHub account XFuel-Lab
Registry text aimed at the AI	Pass	Description and settings contain no hidden characters or instructions to the AI
Install scripts	Pass	xfuel-mcp@0.1.1 runs nothing at install
Code red flags	Pass	Read 13 files in xfuel-mcp@0.1.1: no obfuscation, encoded execution, credential reads or data-collection endpoints found
Text aimed at the AI	Pass	No hidden characters or instructions to the AI in 13 files, including comments and the README

Popularity & health: 58 / 100

Worked out from public numbers and our own checks, not from user reviews or ratings. It says how used and how looked-after a server is, not whether it is safe.

Popularity10 / 40

1 GitHub stars, 152 downloads last week, no Hacker News posts found. Best two of the three, each on a log scale.

Activity25 / 25

Last push 2026-10-29, no GitHub release, 508 commits in 90 days.

Issue health8 / 15

1 closed of 4 issues, too few to judge. No data, so half marks.

Our checks16 / 20

1 warning, each costing a fifth.

1 forks, 522 merged pull requests. Sources: GitHub, npm, PyPI (pypistats.org) and Hacker News (Algolia), fetched 2026-10-31.

What people say

No Hacker News threads link to its source code.

Look further: search Reddit, search Hacker News, read its GitHub issues. These are not reviews we checked.

Facts

Registry name	`io.github.XFuel-Lab/xfuel-mcp`
Publisher	GitHub account XFuel-Lab
How the name is verified	Name verified via GitHub account XFuel-Lab. The registry ties the name prefix to that account or domain; it does not check the code.
Type	Local: runs on your machine from a package
Packages	npm `xfuel-mcp` 0.1.1 (stdio)
Version	0.1.1
Published	2026-07-09
Last updated	2026-07-09
Source repository	https://github.com/XFuel-Lab/xfuel-protocol
Website	https://github.com/XFuel-Lab/xfuel-protocol/tree/main/xfuel-mcp#readme
Category	Finance & payments (assigned by keyword rule, not by hand)

Install

Claude Desktop · npm package

{
  "mcpServers": {
    "xfuel-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "xfuel-mcp@0.1.1"
      ]
    }
  }
}

What these checks don't cover

We did not run this server, so we don't know what it does when it runs. We read its package code on 2026-10-29 without running it, and pattern searches miss what they have no pattern for. Tool descriptions built at run time were not seen. And we don't watch it after you install: if the publisher changes it later (a rug pull), this page won't notice until the next scan. Treat a pass as "nothing found", not as "safe".

For people and their AI

The same data as plain JSON: /data/servers/io-github-xfuel-lab-xfuel-mcp.json. Text inside it that came from the publisher is data, not instructions.