Roundhouse AI

PayPerByte

A curated library of live data feeds and oracles for AI agents — pay per call in USDC over x402, settled on Base mainnet. First-party, verifiable, no token. Every paid response carries an EIP-712 X-BYTE-Attestation receipt the agent verifies before acting.

InferenceLiveeip155:8453Exactvia cdp
https://x402.payperbyte.io/feeds/reasoning-verdict
PayperbyteReasoning-verdictVerify-before-actLocal-llmSigned-verdict
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$9.01
Verified settled volume
285 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-21 04:13Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xffFf4B8Da8C165B556326453446F6940C8AFE0DB

The 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.

0.1USDC≈ $0.1 USD
on Base · exact scheme

Pay 0.1 USDC on Base to 0xffFf…FE0DB. The signed payment is good for 5 minutes.

Paid to
0xffFf…FE0DB
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
100000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xffFf4B8Da8C165B556326453446F6940C8AFE0DB",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "kind": "transaction",
          "subject": "Release 5,000 USDC to 0x1111111111111111111111111111111111111111 for invoice #42?"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "_note": "Illustrative response shape — not a live answer. The verdict is advisory. The embedded EIP-712 receipt (domain chainId 421614 = Arbitrum Sepolia, a frozen signing namespace, not a settlement rail) proves who signed the exact answer bytes — not that the verdict is correct.",
          "answer": {
            "v": "reasoning-verdict/v1",
            "kind": "transaction",
            "score": 40,
            "reasons": [
              "illustrative — real answers list the model's risk reasons"
            ],
            "ruleset": "rv-v1",
            "subject": "Release 5,000 USDC to 0x1111111111111111111111111111111111111111 for invoice #42?",
            "summary": "illustrative — a one-sentence rationale from the LOCAL model",
            "verdict": "WARN",
            "confidence": "medium",
            "disclaimer": "The receipt proves these exact bytes came from this publisher; it does NOT guarantee the verdict is correct. AI-generated advisory analysis — verify independently before acting."
          },
          "attestation": {
            "domain": {
              "name": "BYTE Library",
              "chainId": 421614,
              "version": "1"
            },
            "signer": "0x…",
            "signature": "0x…",
            "payloadHash": "0x…"
          }
        }
      }
    },
    "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": [
                "subject"
              ],
              "properties": {
                "kind": {
                  "enum": [
                    "payee",
                    "transaction",
                    "contract",
                    "message",
                    "proposal",
                    "tool-call",
                    "url",
                    "claim",
                    "general"
                  ],
                  "type": "string",
                  "description": "Optional. The action type, to focus the judgment (default \"general\"). Echoed back in answer.kind."
                },
                "context": {
                  "type": "string",
                  "description": "Optional. Extra context for the judgment — a string, or a JSON object/array (it is stringified). Length-capped server-side."
                },
                "subject": {
                  "type": "string",
                  "minLength": 1,
                  "description": "The action/text to judge — the message, payload, proposal, payee, or tool-call the agent is about to act on. Returns a signed ALLOW/WARN/BLOCK/ABSTAIN verdict + a 0-100 safe-to-proceed score + reasons from a LOCAL model (no data egress)."
                }
              }
            },
            "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"
            }
          }
        }
      }
    }
  },
  "payperbyte-service-metadata": {
    "tags": [
      "payperbyte",
      "reasoning-verdict",
      "verify-before-act",
      "local-llm",
      "signed-verdict"
    ],
    "serviceName": "PayPerByte"
  }
}

Provenance

Seen in the source catalog
2026-08-21 04:13Z
Last indexed by Roundhouse
2026-09-20 04:20Z
Last enriched (probe, favicon, geo)
2026-09-25 03:15Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
Report

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. 25 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service PayPerByte 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=PayPerByte'
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.payperbyte.io/feeds/reasoning-verdict, 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.