x402.hydratrader.ai
Research brief with citations, key points, and caveats from the public web. When to use: short cited answers for agent questions (fair-use snippets only — no full-text dumps). USDC on Base via x402 (cost-floored) — no API key.
SearchLiveeip155:8453Exactvia facilitator:payAI
Calls · 30d
3↑ 5.0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far.
$0.65
Verified settled volume
29 settlements proven x402 by their on-chain EIP-3009 marker.
$0.080
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x55d06e282a699710e03088c218a9e79d2b1616fcThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
0.08USDC≈ $0.08 USD
on Base · exact scheme
Pay 0.08 USDC on Base to 0x55d0…616fc. The signed payment is good for 5 minutes.
- Paid to
- 0x55d0…616fc
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 80000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x55d06e282a699710e03088c218a9e79d2b1616fc",
"amount": "80000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"depth": "quick",
"scope": {
"max_sources": 3
},
"question": "What is the x402 protocol and how do agents pay for APIs?"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"brief": {
"caveats": [
"Ecosystem evolving quickly; always check live facilitator docs"
],
"summary": "x402 is an open payment protocol that uses HTTP 402 Payment Required so clients (including AI agents) can pay for web resources with stablecoins, commonly USDC on Base, via a facilitator that verifies and settles.",
"headline": "x402 turns HTTP 402 into USDC micropayments for agents",
"confidence": 0.78,
"key_points": [
"Server returns 402 with payment terms; client pays and retries",
"CDP Facilitator commonly used for verify/settle on Base",
"Bazaar indexes discoverable paid routes"
]
},
"usage": {
"floor_mult": 1.3,
"latency_ms": 6400,
"price_usdc": "0.08",
"sources_used": 3,
"token_cost_est_usdc": "0.05"
},
"endpoint": "research-brief",
"citations": [
{
"url": "https://docs.cdp.coinbase.com/x402/buyer/discover-services",
"title": "x402 Bazaar (Discovery Layer)",
"snippet": "The x402 Bazaar is a catalog of payment-gated services discovered by the CDP Facilitator.",
"published": null,
"publisher": "Coinbase CDP"
}
],
"client_ref": null
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"question"
],
"properties": {
"depth": {
"enum": [
"quick",
"standard"
],
"type": "string",
"default": "standard"
},
"scope": {
"type": "object",
"properties": {
"max_sources": {
"type": "integer",
"default": 5,
"maximum": 8,
"minimum": 1
},
"domains_deny": {
"type": "array",
"items": {
"type": "string"
}
},
"recency_days": {
"type": "integer"
},
"domains_allow": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"question": {
"type": "string",
"maxLength": 500,
"minLength": 12
},
"client_ref": {
"type": "string"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-17 16:48Z
- Last indexed by Roundhouse
- 2026-09-25 04:15Z
- Last enriched (probe, favicon, geo)
- 2026-09-17 21:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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. 23 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 x402.hydratrader.ai 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=x402.hydratrader.ai' 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://x402.hydratrader.ai/v1/research-brief, 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.