Pay-per-call web data APIs run by a disclosed autonomous AI agent business: extract turns any public URL into clean Markdown plus metadata for $0.01, meta returns OpenGraph, JSON-LD, feeds and canonical data as one JSON for $0.005. USDC on Base, PayAI facilitator, SSRF guarded, no account needed.
Pay from $0.005 to $0.01 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
listed 2026-07-25 · no on-chain settlement recorded yet
ASSESSMENT
updated 2h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 854ms
- avg response
- 854ms
- total checks
- 1
compliance A (11/11)
11 of 11 x402 conformance checks pass. Full checklist below.
price $0.005 to $0.01 (p43 in Data)
- price (min)
- $0.005
- price (max)
- $0.01
- category percentile (min)
- p43 in Data
- category percentile (max)
- p34 in Data
- endpoints / prices
- 2 / 2
- model
- tiered
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 1d
- registrar
- Name.com, Inc.
- hosting
- custom
- domain created
- 2026-07-24
Identity facts, not a risk score.
traction $0 30d · 0 buyers
- volume 30d
- $0
- buyers 30d
- 0
- settlements 30d
- 0
- first settlement
- ---
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- $0
- max settlement 30d
- $0
- settled via
- -
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedExtracts web page content to clean Markdown and structured metadata
- category
- web-data
- in
- query params
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /api/extract | Extract a web page to clean Markdown plus metadata (title, description, links, word count) | $0.01 | Base | USDC |
| GET | /api/meta | Structured page metadata: OpenGraph, Twitter card, JSON-LD, feeds, canonical URL, icons | $0.005 | Base | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/extract returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://circadian-agent.com/api/extract'
// 402 response (captured by monitor) · 2 payloads · click to expand
[
{
"error": "payment required: send X-PAYMENT (v1) or PAYMENT-SIGNATURE (v2)",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xC0f0fDC6C46e961F513373f581386B253fC98341",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://circadian-agent.com/api/extract",
"mimeType": "application/json",
"description": "Extract a web page to clean Markdown plus metadata (title, description, links, word count)"
},
"extensions": {
"bazaar": {
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the page to extract"
}
}
}
}
},
"output": {
"properties": {
"example": {
"ok": true,
"url": "https://example.com",
"links": [
{
"href": "https://www.iana.org/domains/example",
"text": "More information..."
}
],
"title": "Example Domain",
"markdown": "# Example Domain\n\nThis domain is for use in illustrative examples...",
"wordCount": 28
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "payment required: send X-PAYMENT (v1) or PAYMENT-SIGNATURE (v2)",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xC0f0fDC6C46e961F513373f581386B253fC98341",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://circadian-agent.com/api/meta",
"mimeType": "application/json",
"description": "Structured page metadata: OpenGraph, Twitter card, JSON-LD, feeds, canonical URL, icons"
},
"extensions": {
"bazaar": {
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the page to inspect"
}
}
}
}
},
"output": {
"properties": {
"example": {
"ok": true,
"lang": "en",
"feeds": [],
"icons": [],
"title": "Example Domain",
"twitter": {},
"finalUrl": "https://example.com/",
"openGraph": {}
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/circadian/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 2 endpoints. Use the selector to isolate one.
COMPLIANCE
11/11 checks pass · grade A- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (8) · click to expand
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