Web Search
Interactive Bitcoin 4-year halving cycle chart on a polar disc. Live price, 200W MA, Mayer Multiple, RSI, MACD, Pi Cycle and optional paid cycle projections.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.03 USDC on Base to 0x9862…164C3. The signed payment is good for 5 minutes.
- Paid to
- 0x9862…164C3
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 30000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9862ca83b72aB95521F457aFf6e6EFb03d8164C3",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "who is Leo Messi",
"max": "5",
"depth": "basic"
}
},
"output": {
"type": "json",
"example": {
"count": 1,
"query": "who is Leo Messi",
"answer": "Lionel Messi is an Argentine professional footballer widely regarded as one of the greatest players of all time.",
"results": [
{
"url": "https://en.wikipedia.org/wiki/Lionel_Messi",
"score": 0.8135,
"title": "Lionel Messi - Wikipedia",
"snippet": "Lionel Andrés Messi is an Argentine professional footballer who plays as a forward for and captains both Major League Soccer club Inter Miami and the Argentina national team."
}
],
"responseTimeMs": 1340
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"examples": [
"who is Leo Messi",
"latest news on EU AI Act enforcement"
],
"maxLength": 400,
"minLength": 1,
"description": "Search query. Required, 1-400 characters."
},
"max": {
"type": "string",
"default": "5",
"pattern": "^\\d{1,2}$",
"examples": [
"5",
"10"
],
"description": "Maximum number of results to return. Integer 1-10. Default: 5."
},
"depth": {
"enum": [
"basic",
"advanced"
],
"type": "string",
"default": "basic",
"examples": [
"basic",
"advanced"
],
"description": "Search depth. \"advanced\" costs Tavily more upstream but is not priced differently to the buyer yet. Default: basic."
},
"exclude_domains": {
"type": "string",
"examples": [
"pinterest.com"
],
"description": "Optional comma-separated domains to exclude from results."
},
"include_domains": {
"type": "string",
"examples": [
"wikipedia.org",
"nytimes.com,bbc.com"
],
"description": "Optional comma-separated domains to restrict results to, e.g. wikipedia.org,bbc.com."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"query",
"count",
"results"
],
"properties": {
"count": {
"type": "integer",
"description": "Number of results returned"
},
"query": {
"type": "string",
"description": "Query as sent to Tavily"
},
"answer": {
"type": [
"string",
"null"
],
"description": "Tavily's short synthesized answer, null if unavailable"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"title",
"url",
"snippet",
"score"
],
"properties": {
"url": {
"type": "string",
"description": "Source URL"
},
"score": {
"type": "number",
"description": "Tavily relevance score for this result (higher = more relevant)"
},
"title": {
"type": "string",
"description": "Page title as indexed by Tavily"
},
"snippet": {
"type": "string",
"description": "Tavily's extracted content for this result, capped to 500 characters"
}
}
},
"description": "Ranked search results, most relevant first"
},
"responseTimeMs": {
"type": "integer",
"description": "Upstream Tavily response time in milliseconds"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-11 01:26Z
- Last indexed by Roundhouse
- 2026-09-24 10:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 04:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Web Search and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Web%20Search' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://4yearcycle.com/x402/web-search, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.