54CH10.uk: Pre-interact URL check.
Buy Solo 80 calls for $1 (agents)

Don't ever let your agents sign or pay on a fake site.

Paste a URL, wallet, or token. You get a risk score. A URL also comes back with domain age, registrar, and the page as text.

Hook · Skill · Codex · Grok

GET /v1/open

The check. URL in → host brief, WHOIS, page text, page-risk flags, a few one-hop outbound fetches, risk score out. $0.015 a call. Taste is the box above.

80 calls for $1

Prepaid for that check. Agents pay /v1/stack, then send X-54ch10-Stack on later /v1/open calls. Unused credits expire.

Hook

Claude Code. Before Bash / fetch / search. /hook

Skill

Drop-in for Claude, Cursor, Codex, Grok Build. /skill

curl -sS 'https://54ch10.uk/v1/open/free?q=https://example.com'

Who calls this over and over

  1. Browser agent. Human or another agent hands it a URL. Check before navigate.
  2. Wallet agent. Connect, sign, or pay on this site. Check the URL, then the 0x.
  3. Chat or email agent. A link shows up. Check before unfurl or open.
  4. Research agent. Follows 20 pages. Each hop is a check.
  5. Claim / airdrop / mint bot. Those URLs are the bait. Check before a wallet is touched.

Human plans (Stripe)

API key + monthly volume for people. Agents stay on /stack ($1 for 80 calls).

Solo

$29 / mo

500 briefs / month + API key. Best first paid seat.

Pro

$99 / mo

5k briefs / month + watchlists.

Team

$299 / mo

25k briefs / month + seats / keys.

Prefer crypto micropayments? Agents use 80 calls for $1 via x402 — unchanged.

Agents hook and skill

Install the hook if you need it forced. Drop the skill if you just want the agent to know.

Hook

Claude Code. Before Bash / fetch / search. /hook

Skill

Drop-in for Claude, Cursor, Codex, Grok Build. /skill

MCP

stdio install.

npx -y github:sachio222/54ch10-mcp

github.com/sachio222/54ch10-mcp

elizaOS

Plugin for the agent runtime.

elizaos plugins add github:sachio222/eliza-plugin-54ch10

github.com/sachio222/eliza-plugin-54ch10

Discovery /.well-known/x402 · AGENT.md · llms.txt · wire.md