Fuci
REMOTE · WWW.FUCI.FAMILY · SCANNED SEP 26
AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.
Available components
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. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 365 tokens (~60/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
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.
remote · www.fuci.family
claude mcp add --transport http family-fuci-www-fuci 'https://www.fuci.family/api/mcp'
{
"mcpServers": {
"family-fuci-www-fuci": {
"url": "https://www.fuci.family/api/mcp"
}
}
} {
"servers": {
"family-fuci-www-fuci": {
"type": "http",
"url": "https://www.fuci.family/api/mcp"
}
}
} [mcp_servers.family-fuci-www-fuci] url = "https://www.fuci.family/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"family-fuci-www-fuci": {
"type": "remote",
"url": "https://www.fuci.family/api/mcp",
"enabled": true
}
}
} openclaw mcp add family-fuci-www-fuci --url 'https://www.fuci.family/api/mcp' --transport streamable-http
mcp_servers:
family-fuci-www-fuci:
url: "https://www.fuci.family/api/mcp" {
"McpServers": {
"family-fuci-www-fuci": {
"Transport": "http",
"Url": "https://www.fuci.family/api/mcp"
}
}
} assistant mcp add family-fuci-www-fuci -t streamable-http -u 'https://www.fuci.family/api/mcp'
{
"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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 26 Sept 26 74
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 26 Sept 2026 · Probed https://www.fuci.family/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=www.fuci.family | CN=YR1,O=Let's Encrypt,C=US | 23 Sept 2026 | 22 Dec 2026 | RSA 2048 | SHA256-RSA | 61177746ea4bcf8b9070c0d1d559120ce8c |
| SANs: www.fuci.family | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of www.fuci.family. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| family. | present | 30022 | 8 | Verified |
| fuci.family. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://www.fuci.family/api/mcp | Verified | 200 | |
| http (plaintext) | http://www.fuci.family/api/mcp | HTTPS enforced | 308 | https://www.fuci.family/api/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
argus_bonding Bonding Watcher ~59
Price, progress toward bonding, taxes and recent buys and sells for one Argus token. Price: $0.002 USDC (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| token | string | – | Token address (0x…) of an Argus launch |
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | JSON body for POST tools |
| method | string | yes | HTTP method to call with an x402 client |
| url | string | yes | URL to call; it answers 402 with the price, then the data once paid |
No examples provided.
argus_launches Argus Launch Scout ~48
Latest token launches on Argus, the launchpad on Arc: who launched them, their pool and their buy/sell tax. Price: $0.001 USDC (x402).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | JSON body for POST tools |
| method | string | yes | HTTP method to call with an x402 client |
| url | string | yes | URL to call; it answers 402 with the price, then the data once paid |
No examples provided.
fuci_agent Ask the Fucus Agent ~64
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).
| Name | Type | Req | Description |
|---|---|---|---|
| prompt | string | – | Your question about Argus launches / Arc markets |
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | JSON body for POST tools |
| method | string | yes | HTTP method to call with an x402 client |
| url | string | yes | URL to call; it answers 402 with the price, then the data once paid |
No examples provided.
fuci_reputation ERC-8004 reputation ~45
Free. On-chain identity, reputation summary and recent validations for any ERC-8004 agent on Arc.
| Name | Type | Req | Description |
|---|---|---|---|
| agentId | number | yes | ERC-8004 agentId |
| Name | Type | Req | Description |
|---|---|---|---|
| directory | object|null | – | Rank in the Fuci agent directory, if listed |
| reputation | object | yes | Reputation summary from the ERC-8004 Reputation Registry |
| validations | array | yes | Recent ERC-8004 validations |
No examples provided.
fucus_oracle Tide Oracle ~45
A tide reading: net USDC flow and sentiment across the newest Argus launches, in one sentence. Price: $0.0005 USDC (x402).
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | JSON body for POST tools |
| method | string | yes | HTTP method to call with an x402 client |
| url | string | yes | URL to call; it answers 402 with the price, then the data once paid |
No examples provided.
market_search Fuci Market search ~73
Free. Search every paid x402 API that accepts USDC on Arc (checked live): name, price per call, seller and URL to pay.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | Max results (1-25) |
| query | string | yes | What you need, e.g. 'web search' or 'token price' |
| Name | Type | Req | Description |
|---|---|---|---|
| listings | array | yes | – |
| total | number | yes | Number of listings returned |
No examples provided.
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.