imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed
Returns a Wikipedia article summary for a given title: title, extract, page ID and canonical URL, sourced from the Wikipedia REST API. No API key required. 0.001 USDC per call on Base, with 3 free calls per wallet via the X-WALLET header.
Pay from $0.001 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 67.1%
- uptime 24h
- 0%
- uptime 7d
- 0%
- uptime 30d
- 67.1%
- uptime 90d
- 67.1%
- response p95
- 1335ms
- avg response
- 1211ms
- total checks
- 1,339
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14), stale (probe failing)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.001 (p9 in Data)
- price (min)
- $0.001
- category percentile (min)
- p9 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
- 68d
- registrar
- IONOS SE
- hosting
- custom
- domain created
- 2026-06-04
Identity facts, not a risk score.
traction ---
This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
WHAT IT DOES
ai-derivedProvides Wikipedia article summaries for any topic including title, extract, thumbnail, and canonical URL.
- category
- wikipedia-summary
- in
- body
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| POST | /service | Wikipedia article summary for any topic: title, extract, thumbnail, canonical URL. Instant knowledge lookup for agents. Deterministic, no key. $0.01 USDC via x402 on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure. | $0.001 | Base | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /service returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://wikipedia.hergertsynthora.com/service'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x10800a5a5B9d72251566EC651E862A8b4B427dE0",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://wikipedia.hergertsynthora.com/service",
"description": "Wikipedia article summary for any topic: title, extract, thumbnail, canonical URL. Instant knowledge lookup for agents. Deterministic, no key. $0.01 USDC via x402 on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.",
"maxAmountRequired": "1000",
"maxTimeoutSeconds": 300
}
],
"freeTier": {
"note": "send header X-WALLET: 0x<your Base address> for a free trial",
"header": "X-WALLET",
"callsPerWallet": 3
},
"resource": {
"url": "https://wikipedia.hergertsynthora.com/service",
"mimeType": "application/json",
"description": "Wikipedia article summary for any topic: title, extract, thumbnail, canonical URL. Instant knowledge lookup for agents. Deterministic, no key. $0.01 USDC via x402 on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"title": "Bitcoin"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"niche": "wikipedia",
"result": {}
}
}
},
"schema": {
"type": "object",
"$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": [
"title"
],
"properties": {
"title": {
"type": "string",
"description": "title"
}
}
},
"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": {
"ok": {
"type": "boolean"
},
"type": "object",
"niche": {
"type": "string"
}
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 90d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/wikipedia-article-summary/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.
COMPLIANCE
14/14 checks pass · grade A · stale (probe failing)last 402 captured 2026-07-20 · last up 2026-08-02
- 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
EMBED THIS BADGE
<a href="https://x402-list.com/services/wikipedia-article-summary?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/wikipedia-article-summary.svg" alt="Wikipedia Article Summary listed on x402-list" height="28"> </a>
[](https://x402-list.com/services/wikipedia-article-summary?utm_source=badge&utm_medium=referral&utm_campaign=embed)
<a href="https://x402-list.com/services/wikipedia-article-summary?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/wikipedia-article-summary.svg?data=uptime" alt="Wikipedia Article Summary uptime on x402-list" height="28"> </a>