graphadvocate.com
Claude-powered routing agent for The Graph Protocol. Ask in plain English; paid calls run the query against 15,500+ indexed subgraphs and return the rows. Free chat hands you the subgraph and the GraphQL to run yourself. $0.01 USDC per call on Base via x402.
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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"hint": "Decode the base64 `payment-required` response header for the full x402 challenge (accepts, schema, output example).",
"error": "Payment required",
"x402Version": 2
}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 0.02 USDC on Base to 0x0FF5…e7C86. The signed payment is good for 5 minutes.
- Paid to
- 0x0FF5…e7C86
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x0FF5A6ecef783BBA35463ec2F8403B9B5e9e7C86",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"days": 90,
"wallet": "0x575267eED09c338FAE5716A486A7B58A5749A292"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": "active",
"score": 65,
"wallet": "0x575267eED09c338FAE5716A486A7B58A5749A292",
"signals": {
"feedback_count": 1,
"erc8004_age_days": 75.2,
"erc8004_agent_id": "41034",
"avg_feedback_value": 85,
"erc8004_registered": true,
"distinct_senders_30d": 2,
"usdc_received_30d_usdc": 4.66,
"distinct_feedback_clients": 1,
"erc8004_agent_count_for_owner": 1
},
"verdict": "[active] ERC-8004 registered (75d old, agent #41034) — metadata valid — received $4.6620 USDC from 2 distinct sender(s) in 30d (9 tx) — last paid call 2.6d ago — 1 feedback event(s) from 1 distinct client(s), avg value 85.0.",
"cache_hit": false,
"max_score": 100,
"window_days": 90,
"awarded_points": {
"any_feedback": 10,
"active_last_7d": 10,
"received_any_30d": 10,
"erc8004_age_gt_7d": 5,
"erc8004_registered": 15,
"ipfs_declares_x402": 5,
"ipfs_metadata_valid": 5,
"positive_avg_feedback": 5
}
}
}
},
"schema": {
"type": "object",
"$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": [
"wallet"
],
"properties": {
"days": {
"type": "integer",
"default": 90,
"maximum": 365,
"minimum": 1,
"description": "USDC settlement scan window."
},
"wallet": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "Wallet address to score (owner or agentWallet)."
}
}
},
"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": [
"wallet",
"score",
"tier",
"verdict"
],
"properties": {
"tier": {
"enum": [
"active_verified",
"active",
"registered_or_settling",
"dormant_low_signal",
"no_evidence"
],
"type": "string"
},
"score": {
"type": "integer",
"maximum": 100,
"minimum": 0
},
"wallet": {
"type": "string"
},
"verdict": {
"type": "string"
},
"cache_hit": {
"type": "boolean"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-21 20:38Z
- Last indexed by Roundhouse
- 2026-10-21 19:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-25 00:45Z
- 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. 32 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 graphadvocate.com 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=graphadvocate.com' 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://graphadvocate.com/agent/score, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.