x402 purchase endpoints from AnySpend on Base. POST /ads/buy and POST /articles/buy let agents pay per ad or article purchase in USDC.
Pay from $0.10 to $3.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
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
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 364ms
- avg response
- 188ms
- total checks
- 47
compliance A (11/11)
11 of 11 x402 conformance checks pass. Full checklist below.
price $0.10 to $3.00 (p68 in Content)
- price (min)
- $0.10
- price (max)
- $3.00
- category percentile (min)
- p68 in Content
- category percentile (max)
- p86 in Content
- 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.
traction $5918.00 30d · 260 buyers
- volume 30d
- $5918.00
- buyers 30d
- 260
- settlements 30d
- 3,477
- last settlement
- 2026-07-21
- top buyer share
- 1% of 30d volume
- trend 7d vs 30d
- 1.22x the 30d daily rate
- networks
- eip155:8453
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-derivedA service that allows users to buy ad slots and generate articles through API calls.
- category
- advertising-content
- in
- body
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| POST | /ads/buy | Ad Slot Booking | $0.10 | Base | USDC |
| POST | /articles/buy | Article Generation Request | $3.00 | Base | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /ads/buy returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://x402.anyspend.com/ads/buy'
// 402 response (captured by monitor) · 2 payloads · click to expand
[
{
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1E8E93CB91778E5B1a3639706789195a838960F8",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "http://x402.anyspend.com/ads/buy",
"description": "Ad Slot Booking",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"discoverable": true
}
},
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 120
}
],
"x402Version": 1
},
{
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1E8E93CB91778E5B1a3639706789195a838960F8",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "http://x402.anyspend.com/articles/buy",
"description": "Article Generation Request",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"discoverable": true
}
},
"maxAmountRequired": "3000000",
"maxTimeoutSeconds": 120
}
],
"x402Version": 1
}
] UPTIME
RECENT CHECKS
OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/anyspend/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).
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
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