Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add rezearcher/x402-data-api --skill mcp-scangit clone --depth 1 https://github.com/rezearcher/x402-data-apiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/rezearcher/x402-data-api/mcp-scan)<a href="https://agentmods.dev/skills/rezearcher/x402-data-api/mcp-scan"><img src="https://agentmods.dev/badge/skills/rezearcher/x402-data-api/mcp-scan/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/rezearcher/x402-data-api/mcp-scan"><img src="https://agentmods.dev/badge/skills/rezearcher/x402-data-api/mcp-scan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00409 |
| Opus 5.5 | $0.00000 | $0.00164 |
| Sonnet 5.5 | $0.00000 | $0.00082 |
| Haiku 4.5 | $0.00000 | $0.00041 |
Grade A, and why
mcp-scan scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s "$B/scan/mcp/preview?url=https://HOST/mcp" What it actually says
mcp-scan — vet an MCP server before you connect an agent to it
Static analysis of a server's advertised tool metadata (descriptions, schemas, hidden unicode). It does not call the server's tools. Free preview returns tools scanned, issue counts by severity, risk score and verdict (clear / review / block).
Remote server (Streamable HTTP)
B=https://x402-data-api.sigrunner.workers.dev
curl -s "$B/scan/mcp/preview?url=https://HOST/mcp"
Private, OAuth-gated or stdio server
Paste its tools/list result; nothing needs to be reachable from outside:
curl -s -X POST "$B/scan/mcp/preview" -H 'content-type: application/json' \
-d '{"tools":[ ...the "tools" array from tools/list... ]}'
Acting on the verdict
clear— proceed.review— read the flagged tool descriptions before enabling the server.block— do not connect; tell the user which tool and why.
The full itemized report with evidence and OWASP mapping is the paid route GET /scan/mcp ($0.05 USDC via x402 on Base). CLI: npx github:rezearcher/greyridge-x402-tools mcpscan <url> (exit code 2 = block). Methodology and measured limits: https://github.com/rezearcher/x402-data-api/blob/main/docs/STATUS.md
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 33 lines · 0 tokens per session scan A b0bcb0bee863
mcp-scan is a skill published in the GitHub repository rezearcher/x402-data-api (0 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 409 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-20.
Other skills, from other repositories
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add-export
Add a new subpath export to the @cyanheads/mcp-ts-core package. Use when creating a new public API surface that consumers import from a dedicated subpath (e.g., @cyanheads/mcp-ts-core/newutil).
pantheon-staking
Stake creator coins into Pantheon vaults on Base and Robinhood Chain, view staking positions, and claim monthly rewards. Use when the user mentions Pantheon, pantheonvaults, staking a creator coin for yield, or checking/claiming Pantheon vault rewards.
delu-oracle
Full-cognition token analysis for Base EVM tokens via the deluagent oracle. Pass a CA or cashtag, get back a flat decision header (action, conviction, entry/stop/size, read) plus full cognition report. Tiered x402 pricing — 100M+ DELU free, 50M+ 50k DELU, public 250k DELU. Sequential calls only.
base-agent-treasury
Use when building or advising on treasury management for an AI agent on Base mainnet. Covers when to hold USDC, when to use GBLIN treasury-backed index, when to use Morpho or Aave lending, and how to choose based on treasury size and revenue pattern.
gblin
Hold cbBTC, WETH and USDC on Base as one token. GBLIN is a collateral-backed basket vault that mints and redeems at net asset value, moves target weight toward USDC when a basket asset falls sharply, and can always be redeemed in kind. Free read endpoints, no API key, no signup. Transactions come back unsigned and are…