x402 on Base mainnet

Fetch Sentry

Paid fetch, metadata extraction, and prompt-injection scanning for agents over x402 on Base. The API returns HTTP 402 requirements and settles through x402-compatible clients.

Run Free Preview Quickstart OpenAPI Pricing JSON

GET /preview

Free short preview so agents can inspect before paying.

Free

GET /fetch

Clean text + final URL + page summary.

$0.001

GET /extract

Title, description, canonical URL, links, and language.

$0.002

POST /scan

Prompt-injection and credential-harvest heuristics.

$0.003

Try Free Preview

Run a free preview to see what an agent gets before paying for full fetch or extract.

Examples

curl -i "https://api.fetch-sentry.online/preview?url=https%3A%2F%2Fexample.com"

curl -i "https://api.fetch-sentry.online/fetch?url=https%3A%2F%2Fexample.com"

curl -i "https://api.fetch-sentry.online/extract?url=https%3A%2F%2Fexample.com"

curl -i -X POST "https://api.fetch-sentry.online/scan" \
  -H "content-type: application/json" \
  -d '{"url":"https://example.com"}'

Agent Docs

Machine-readable docs: https://api.fetch-sentry.online/pricing.json, https://api.fetch-sentry.online/openapi.json, https://api.fetch-sentry.online/llms.txt, and https://api.fetch-sentry.online/quickstart.txt.

Public endpoints: https://api.fetch-sentry.online/health, https://api.fetch-sentry.online/catalog, https://api.fetch-sentry.online/ops/stats, and https://api.fetch-sentry.online/ops/events.