MCP.Market

Fuci MCP server

online · 100% uptime
by www.fuci.family·family.fuci.www/fuci·v0.1.0
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AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.

B77/100grade B
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Safety scan
B77/100

full report

Adoption
Growing

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Fuci tools (6, 1 write)

write = sends, deletes, buys or posts
  • argus_bondingFree

    Price, progress toward bonding, taxes and recent buys and sells for one Argus token. Price: $0.002 USDC (x402).

  • argus_launchesFree

    Latest token launches on Argus, the launchpad on Arc: who launched them, their pool and their buy/sell tax. Price: $0.001 USDC (x402).

  • fuci_agentwrite actionFree

    Pay-per-prompt: a Fuci agent answers your question by buying the tools above and writing a brief (with Claude when enabled). Price: $0.04 USDC (x402).

  • fuci_reputationFree

    Free. On-chain identity, reputation summary and recent validations for any ERC-8004 agent on Arc.

  • fucus_oracleFree

    A tide reading: net USDC flow and sentiment across the newest Argus launches, in one sentence. Price: $0.0005 USDC (x402).

  • market_searchFree

    Free. Search every paid x402 API that accepts USDC on Arc (checked live): name, price per call, seller and URL to pay.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 823ms20/20
  • Tool poisoning6 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
  • Maintenancelast push 1 days ago15/15
  • Maintainer identitynamespace and repository owner differ; website matches verified namespace5/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Fuci compares

Against every graded Web search MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 55% of 3,470 Web search servers
Tools
6
the typical Web search server has 5
Tools that change things
17%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Web search server answers 100%
Response time
232 ms
faster than 62% of 2,238 Web search servers

What its tools let an agent do: 4 read · 2 change

Install Fuci in Claude Code, Cursor or VS Code

claude mcp add --transport http fuci https://www.fuci.family/api/mcp
Add to Cursor

What the publisher says

From the Fuci repository's README, as published. We do not edit it. Read it on GitHub

Spawn an agent for 1 USDC. It gets its own wallet, an on-chain ERC-8004 identity, and pays for every tool it uses in USDC over x402. No API keys. No subscriptions.

Website · Docs · Fuci Risk · Market · X · DefiLlama · $FUCI

Why Fuci

Most "AI agents" still need a human with a credit card and an API key. Fuci agents pay for themselves. Each one is a frond in a kelp forest on Arc, Circle's USDC chain:

  • 🌿 Its own wallet. USDC on Arc. You set a daily limit; the agent can't go past it.
  • 🪪 Its own identity. Registered in Arc's ERC-8004 Identity Registry, with a public card, reputation and validation history.
  • 💸 Pays per call. Every tool answers 402 Payment Required with a price. The agent signs a USDC payment through Circle Gateway (gas-free, batched) and gets the data.
  • 🤖 Works while you sleep. Scheduled reports, launch scouting and an Argus trading autopilot with take-profit, stop-loss and "sell when the dev sells".

Fuci is the plural of Fucus, a brown seaweed. Every agent is a frond; every payment grows the forest.

Pay-per-call tools for any agent

Any agent holding USDC, on Arc, Base, Arbitrum, Ethereum, Optimism, Polygon, Avalanche, Unichain, World Chain, Sonic, Sei or HyperEVM, can call these. No account, no key: call, read the price in the 402, pay, get JSON.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Fuci: common questions

Is Fuci MCP server safe?
Mostly: it is graded B (77/100). Read the Fuci safety report
How do I install Fuci?
It runs remotely at www.fuci.family. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Fuci need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Fuci maintained?
The last commit was 40 days ago (2026-09-25). The latest release is v0.1.0.
Is Fuci up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Fuci?
Servers from other publishers that do the same job: Tenjin MCP server.
How does Fuci compare with other Web search MCP servers?
safety score 77/100 (higher than 55% of 3,470 Web search servers); tools 6 (the typical Web search server has 5); tools that change things 17% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Fuci

Same job from other publishers: the closest match first, then the best rated.

  • Tenjin
    Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.
    B