verified until 2026-08-17
Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body content. Supports GET, POST, PUT, PATCH, DELETE, and HEAD. Automatically follows up to 3 redirects. Useful for testing endpoints, verifying servers are responding correctly, debugging redirect chains, or fetching raw data without needing a local setup
Pay from $0.01 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-05-05 · $11.23 all-time · settled via coinbase, payAI
ASSESSMENT
updated 2m agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 99.9%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 99.9%
- uptime 90d
- 99.9%
- response p95
- 1774ms
- avg response
- 890ms
- total checks
- 2,776
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.01 (p53 in Data)
- price (min)
- $0.01
- category percentile (min)
- p53 in Data
- endpoints / prices
- 1 / 1
- model
- flat
- 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
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $10.4666666667 30d · 31 buyers
- volume 30d
- $10.4666666667
- buyers 30d
- 31
- settlements 30d
- 129
- first settlement
- 2026-05-05
- last settlement
- 2026-08-10
- top buyer share
- 65% of 30d volume
- trend 7d vs 30d
- 0.02x the 30d daily rate
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $11.23
- settlements all-time
- 350
- median settlement 30d
- $0.01
- max settlement 30d
- $10.00
- settled via
- coinbase, payAI
Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.
Currently sharing this payout address with Bulk DMARC Record Lookup, US CPI Data & Inflation Report API.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedSends HTTP requests to any URL and returns the full response including status code, headers, and body content.
- category
- http-client
- in
- query params
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /curl | $0.01 | Base/Solana | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /curl returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://curl-http-request.underscoredone.com/curl'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://curl-http-request.underscoredone.com/curl",
"tags": [
"Network"
],
"mimeType": "application/json",
"description": "Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body content. Supports GET, POST, PUT, PATCH, DELETE, and HEAD. Automatically follows up to 3 redirects. Useful for testing endpoints, verifying servers are responding correctly, debugging redirect chains, or fetching raw data without needing a local setup.",
"serviceName": "Curl HTTP Request"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://httpbin.org/get",
"method": "GET"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"url": "https://httpbin.org/get",
"body": "{\n \"args\": {}, \n \"headers\": {\n \"Host\": \"httpbin.org\"\n }, \n \"url\": \"https://httpbin.org/get\"\n}",
"error": "",
"method": "GET",
"headers": {
"server": "gunicorn/19.9.0",
"content-type": "application/json",
"content-length": "307"
},
"durationMs": 312,
"statusCode": 200,
"api_version": "1.0.0",
"redirectChain": []
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "The full web address you want to send a request to. Must start with http:// or https://."
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string",
"description": "The type of request to make. Choose from GET, POST, PUT, PATCH, DELETE, or HEAD. Defaults to GET if not provided."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"api_version",
"url",
"method",
"statusCode",
"headers",
"body",
"durationMs",
"redirectChain",
"error"
],
"properties": {
"url": {
"type": "string"
},
"body": {
"type": "string"
},
"error": {
"type": "string"
},
"method": {
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": true
},
"durationMs": {
"type": "integer"
},
"statusCode": {
"type": "integer"
},
"api_version": {
"type": "string"
},
"redirectChain": {
"type": "array",
"items": {
"type": "object"
}
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/curl-http-request/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.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
Shared payout address (2 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 3 services sharing it: a declared convention, not an individually observed measure.
Shared payout address (2 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-07-08 · last up 2026-08-10
- 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
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
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