Blackwood State LLM Chat
Use when you need an llm chat completion for summaries, extraction or classification from a cheap open model. Do not use for frontier models, tool calling or streaming. Returns JSON with a chat completion from IBM Granite 4.0 Micro on Workers AI, with token usage for 0.002 USDC per thousand tokens, up to 0.03 USDC per call (clients without upto pay the cap). Asynchronous: the paid call returns a jobId and a free pollUrl; typical job time 8000 ms (p95). Category: Inference.
InferenceLiveeip155:8453Exactvia cdp
LlmChat completionClassificationInference
Calls · 30d
5
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far.
$0.12
Verified settled volume
4 settlements proven x402 by their on-chain EIP-3009 marker.
$0.030
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-26 13:41Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xB7EEC07C045c7Be0C65e0b0526E1afD333e0fa7eThe 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.
0.03USDC≈ $0.03 USD
on Base · exact scheme
Pay 0.03 USDC on Base to 0xB7EE…0fa7e. The signed payment is good for 1 minute.
- Paid to
- 0xB7EE…0fa7e
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 30000 smallest units
0.03USDC≈ $0.03 USD
on Base · upto scheme
Pay 0.03 USDC on Base to 0xB7EE…0fa7e. The signed payment is good for 1 minute.
- Paid to
- 0xB7EE…0fa7e
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 30000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xB7EEC07C045c7Be0C65e0b0526E1afD333e0fa7e",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"facilitatorAddress": "0x93F6601151cCB08F333AB4B1CCcfb1e188c0bE44",
"assetTransferMethod": "permit2"
},
"payTo": "0xB7EEC07C045c7Be0C65e0b0526E1afD333e0fa7e",
"amount": "30000",
"scheme": "upto",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"messages": [
{
"role": "user",
"content": "In one sentence, what is the x402 payment protocol?"
}
],
"maxTokens": 80
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"jobId": "job_00000000000000000000000000000000",
"status": "queued",
"pollUrl": "https://gateway.example/v1/llm-chat/jobs/job_00000000000000000000000000000000",
"expiresAt": "2026-01-31T00:00:00.000Z"
}
}
},
"schema": {
"type": "object",
"$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": [
"messages"
],
"properties": {
"messages": {
"type": "array",
"items": {
"type": "object",
"required": [
"role",
"content"
],
"properties": {
"role": {
"enum": [
"system",
"user",
"assistant"
],
"type": "string",
"description": "Who wrote the message"
},
"content": {
"type": "string",
"maxLength": 32000,
"minLength": 1,
"description": "Message text"
}
}
},
"maxItems": 50,
"minItems": 1,
"description": "Conversation so far, oldest first, e.g. [{\"role\": \"user\", \"content\": \"Summarize: ...\"}]"
},
"maxTokens": {
"type": "integer",
"maximum": 4096,
"minimum": 1,
"description": "Maximum tokens to generate (1-4096, 512 when omitted); billed as requested"
},
"temperature": {
"type": "number",
"maximum": 2,
"minimum": 0,
"description": "Sampling temperature (0-2), e.g. 0.2 for near-deterministic output"
}
}
},
"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",
"required": [
"jobId",
"pollUrl",
"expiresAt",
"status"
],
"properties": {
"next": {
"type": "object",
"required": [
"service",
"tool",
"method",
"url",
"useWhen",
"sample"
],
"properties": {
"url": {
"type": "string",
"description": "Paid route of the next call"
},
"tool": {
"type": "string",
"description": "MCP tool name of the same call"
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"sample": {
"type": "string",
"description": "Free fixed sample of the whole family"
},
"service": {
"type": "string",
"description": "Service id of the suggested next paid call"
},
"useWhen": {
"type": "string",
"description": "When the next call is the right one"
}
},
"description": "Suggested next paid call in the same family (call it in a loop when the task continues)",
"additionalProperties": false
},
"jobId": {
"type": "string",
"maxLength": 100,
"minLength": 1
},
"status": {
"type": "string",
"const": "queued"
},
"pollUrl": {
"type": "string",
"format": "uri"
},
"expiresAt": {
"type": "string",
"description": "ISO 8601: depois disso o resultado deixa de existir"
}
},
"additionalProperties": false
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-26 13:41Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-17 08:15Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 200
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. 13 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 Blackwood State LLM Chat 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=Blackwood%20State%20LLM%20Chat' 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-gateway.blackwoodstate8.workers.dev/v1/llm-chat, 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.