# Toolbelt402

> Pay-per-call utility API for AI agents. x402 · USDC on Base · no API key.
> Data/utility service. Not financial or investment advice. No custody.

## Paid endpoints (HTTP 402 → pay → retry)
- GET https://toolbelt402.catalystdesk.workers.dev/v1/read?url=… — $0.003 — URL → clean Markdown. Main article text, title, byline, word count.
- GET https://toolbelt402.catalystdesk.workers.dev/v1/meta?url=… — $0.002 — Page metadata + SEO audit: title, description, OG/Twitter tags, canonical, H1s, link counts, issues.
- GET https://toolbelt402.catalystdesk.workers.dev/v1/x402-check?url=… — $0.01 — Validate any x402 endpoint: 402 challenge, accepts[], atomic amounts, bazaar extension, OpenAPI. Score 0-100 + fixes.
- GET https://toolbelt402.catalystdesk.workers.dev/v1/token?address=… — $0.005 — Base ERC-20 contract facts: name/symbol/decimals/supply, owner, EIP-1967 proxy, mint/pause/blacklist flags. Heuristic, not an audit.
- GET https://toolbelt402.catalystdesk.workers.dev/v1/catalyst/movers — $0.02 — Catalyst Desk: top Polymarket markets by 24h volume with 1-day price change, liquidity, end date, links.
- GET https://toolbelt402.catalystdesk.workers.dev/v1/kit/download — $9.00 — x402 Seller Kit (ZIP): Express + Cloudflare Worker templates to monetize any API with USDC on Base, discovery checklist, pricing guide.

## Free
- GET https://toolbelt402.catalystdesk.workers.dev/v1/pulse — Polymarket top-5 teaser
- GET https://toolbelt402.catalystdesk.workers.dev/health
- GET https://toolbelt402.catalystdesk.workers.dev/openapi.json
- GET https://toolbelt402.catalystdesk.workers.dev/.well-known/x402

payTo: 0x87e322e8829a915b44708e7bb0a0c377055b4281
Data/utility service. Not financial or investment advice. No custody.