live on base · x402 · usdc

Web pages, machine-readable, $0.01 a call.

Agent Extract is a pay-per-call API built for AI agents. Your agent sends a URL, pays $0.01 in USDC over the x402 protocol, and gets back the title, description, headings, clean main text, markdown and links of that page. No account, no API key, no invoice.

Try it live /api/public/discovery Sample pages to test on

buying-agent — 402 handshake

$ curl -X POST /api/public/extract -d '{"url":"https://example.com"}'
HTTP/1.1 402 Payment Required
{"accepts":[{"scheme":"exact","network":"base","maxAmountRequired":"10000"}]}

$ curl -X POST /api/public/extract -H "x-payment: <signed>" ...
HTTP/1.1 200 OK · settled $0.01 USDC
{"title":"...","markdown":"## ...","wordCount":1284}

Paid calls settled

—

USDC earned

—

Success rate

—

Avg latency

—

protocol

How a buying agent uses it

Discover

The agent reads /api/public/discovery and learns the price, the network, the input schema and the output schema — no docs required.

Pay

It POSTs the URL, receives HTTP 402 with x402 payment requirements, signs a USDC authorization for $0.01, and retries with the X-PAYMENT header.

Extract

Payment is verified and settled on-chain by the facilitator, then the page is fetched, cleaned of navigation and ads, and returned as structured JSON, text or markdown.

response

What comes back

Title, description, canonical URL and site metadata
Boilerplate-stripped main text — no navs, footers or ad slots
Markdown rendering of the body for LLM context windows
Heading outline, link list, word count and reading time
Quality score so your agent knows when extraction was thin
Machine-readable error codes for blocked, missing or oversized pages

{
  "url": "https://example.com/post",
  "title": "How agents pay agents",
  "description": "A short primer ...",
  "headings": ["Why nanopayments", "The 402 handshake"],
  "text": "Clean article body ...",
  "markdown": "## Why nanopayments\n\n...",
  "links": ["https://x402.org", "..."],
  "wordCount": 1284,
  "readingTimeMinutes": 6,
  "qualityScore": 0.91,
  "cached": false
}

pricing

One price. Per call.

$0.01

per successful extraction

Settlement: USDC on Base, x402 protocol
Atomic amount: 10000 (6 decimals)
Cache window: 15 min — cached pages serve faster
Failed calls: Never charged — errors return 4xx/5xx with a code
Subscriptions: None. Pay only for the calls you make.
Minimum: None. One call is a valid customer.

optional · nano billing

Prepaid balance

Deposit USDC once over x402, get an API key, and every later call draws $0.01 from the balance — no on-chain settlement per request, so calls are faster and cheaper in gas.

Packs: $1 (100 calls) · $5 (500) · $20 (2,000)
Auth: Authorization: Bearer ax_…
Top up: POST /api/public/topup?pack=1
Balance: GET /api/public/balance
Price per call: Identical — $0.01

# 1. deposit once (returns your API key)
circle services pay "https://fetchweb.net/api/public/topup?pack=1" \
  -X POST --address 0xYOURWALLET --chain BASE

# 2. then just call it with the key
curl -X POST https://fetchweb.net/api/public/extract \
  -H "authorization: Bearer ax_..." \
  -H "content-type: application/json" \
  -d '{"url":"https://example.com"}'

quickstart

Integrate in a minute

# 1. discover price + schema
curl $BASE/api/public/discovery

# 2. call it (returns 402 with payment requirements)
curl -X POST $BASE/api/public/extract \
  -H 'content-type: application/json' \
  -d '{"url":"https://example.com","format":"markdown"}'

# 3. pay and retry with the signed x402 header
curl -X POST $BASE/api/public/extract \
  -H 'content-type: application/json' \
  -H "x-payment: $SIGNED_X402_PAYLOAD" \
  -d '{"url":"https://example.com","format":"markdown"}'

Any x402-capable client works, including the Circle agent CLI: circle services pay.