# Fuci (remote · www.fuci.family)

AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.

- Trust score: 74/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- remote · `www.fuci.family`: 74/100 (this document), [markdown](https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp.md), [page](https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp)

## Channel facts

- Endpoint: `https://www.fuci.family/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-26.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 78/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 365 tokens (~60/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the Fuci MCP server?

Fuci is a hosted endpoint at https://www.fuci.family/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http family-fuci-www-fuci 'https://www.fuci.family/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "family-fuci-www-fuci": {
      "url": "https://www.fuci.family/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "family-fuci-www-fuci": {
      "type": "http",
      "url": "https://www.fuci.family/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.family-fuci-www-fuci]
url = "https://www.fuci.family/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "family-fuci-www-fuci": {
      "type": "remote",
      "url": "https://www.fuci.family/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add family-fuci-www-fuci --url 'https://www.fuci.family/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  family-fuci-www-fuci:
    url: "https://www.fuci.family/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "family-fuci-www-fuci": {
      "Transport": "http",
      "Url": "https://www.fuci.family/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add family-fuci-www-fuci -t streamable-http -u 'https://www.fuci.family/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "family-fuci-www-fuci": {
      "type": "http",
      "url": "https://www.fuci.family/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-26 (score 74)

First indexed and scored.

## MCP tools (6)

### `fuci_reputation` (~45 tokens)

ERC-8004 reputation

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

Input parameters:

- `agentId` (number, required): ERC-8004 agentId

Output parameters:

- `directory` (object|null): Rank in the Fuci agent directory, if listed
- `reputation` (object): Reputation summary from the ERC-8004 Reputation Registry
- `validations` (array): Recent ERC-8004 validations

### `market_search` (~73 tokens)

Fuci Market search

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

Input parameters:

- `limit` (number): Max results (1-25)
- `query` (string, required): What you need, e.g. 'web search' or 'token price'

Output parameters:

- `listings` (array)
- `total` (number): Number of listings returned

### `argus_launches` (~48 tokens)

Argus Launch Scout

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

Output parameters:

- `body` (object): JSON body for POST tools
- `method` (string): HTTP method to call with an x402 client
- `url` (string): URL to call; it answers 402 with the price, then the data once paid

### `argus_bonding` (~59 tokens)

Bonding Watcher

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

Input parameters:

- `token` (string): Token address (0x…) of an Argus launch

Output parameters:

- `body` (object): JSON body for POST tools
- `method` (string): HTTP method to call with an x402 client
- `url` (string): URL to call; it answers 402 with the price, then the data once paid

### `fucus_oracle` (~45 tokens)

Tide Oracle

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

Output parameters:

- `body` (object): JSON body for POST tools
- `method` (string): HTTP method to call with an x402 client
- `url` (string): URL to call; it answers 402 with the price, then the data once paid

### `fuci_agent` (~64 tokens)

Ask the Fucus Agent

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).

Input parameters:

- `prompt` (string): Your question about Argus launches / Arc markets

Output parameters:

- `body` (object): JSON body for POST tools
- `method` (string): HTTP method to call with an x402 client
- `url` (string): URL to call; it answers 402 with the price, then the data once paid

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp#diagnostics

## Score history

- 2026-09-26: 74

## Common questions

### What is the Fuci MCP server?

Fuci is an MCP server listed in the public MCP registry as family.fuci.www/fuci. AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC. This page covers its hosted endpoint (https://www.fuci.family/api/mcp).

### Is the Fuci MCP server safe to use?

Fuci scores 74 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Fuci MCP server expose?

Fuci exposes 6 tools: fuci_reputation, market_search, argus_launches, argus_bonding, fucus_oracle, fuci_agent. Their descriptions and schemas cost roughly 334 tokens of context every time the server is loaded.

### Does the Fuci MCP server require authentication?

No. We connected to Fuci without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Fuci MCP server still maintained?

Fuci is still listed as active in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://www.fuci.family/api/mcp
- Repository: https://github.com/fucidotfamily/fuci_family
- Website: https://www.fuci.family/docs
- Changelog RSS feed: https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/family-fuci-www-fuci/api-mcp