Utilities · x402 · early usage

Datoka Agent: one signed execution declaration receipt

Datoka Agent: one signed execution declaration receipt. Retry with the same event, idempotency key and payment.

by datoka-agent.bhazarstudio.workers.dev · discovered, not yet claimed by its owner · updated 2026-10-08

30d calls6

30d payers3

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Datoka Agent: one signed execution declaration receipt. Retry with the same event, idempotency key and payment.

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-08

Input example from Bazaar metadata

{
  "event": {
    "agentId": "demo-agent",
    "completedAt": "2026-09-29T13:36:18.844Z",
    "inputHash": {
      "algorithm": "sha256",
      "digest": "206f7b5543e6f2ef39bf334988fd7097b725caeed16588cd9d785480f2f0f8f6"
    },
    "outcome": "success",
    "outputHash": {
      "algorithm": "sha256",
      "digest": "4403134882233d347dfa35d23b98c42a4442478ce521631ef566d21df77e2a52"
    },
    "runId": "demo-run",
    "startedAt": "2026-09-29T13:36:18.844Z",
    "stepId": "addition-001",
    "tool": "number.add",
    "version": "datoka.agent.execution.v1"
  },
  "idempotencyKey": "replace-with-a-unique-key-before-buying"
}

Output example

{
  "event": {
    "agentId": "demo-agent",
    "completedAt": "2026-09-29T13:36:18.844Z",
    "inputHash": {
      "algorithm": "sha256",
      "digest": "206f7b5543e6f2ef39bf334988fd7097b725caeed16588cd9d785480f2f0f8f6"
    },
    "outcome": "success",
    "outputHash": {
      "algorithm": "sha256",
      "digest": "4403134882233d347dfa35d23b98c42a4442478ce521631ef566d21df77e2a52"
    },
    "runId": "demo-run",
    "startedAt": "2026-09-29T13:36:18.844Z",
    "stepId": "addition-001",
    "tool": "number.add",
    "version": "datoka.agent.execution.v1"
  },
  "receipt": {
    "algorithm": "Ed25519",
    "body": {
      "id": "48fe5c2f-012c-4e52-a6b0-74ca3c487c98",
      "issuedAt": "2026-09-29T13:36:19.022Z",
      "issuer": "datoka.agent.test",
      "keyId": "test-key-1",
      "previous": null,
      "request": {
        "chain": "run:5bbe50afe842854e909b091a6be364f4b16f541a8a6c1195e777d1e0f58d6867",
        "eventType": "datoka.agent.execution",
        "scope": "tenant-a",
        "subject": {
          "algorithm": "sha256",
          "digest": "5ad65af6a67c968f55f77ed7b8d6bf4c5c65167ca3c81fc4811ee61e4fdc3559",
          "encoding": "jcs"
        }
      },
      "sequence": 1,
      "version": "datoka.receipt.v1"
    },
    "signature": "QFlVdquYWg4FkGtI02U5V6QKLRiKWs-ACsL0k3dsZXIVOOr_gn8C7Mq0XccRbvVEXMt3HnO0Cth0zsHqXYcQBw"
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/40621.json for the price and payment options.
Pay. Call GET https://datoka-agent.bhazarstudio.workers.dev/v1/operations/issue_agent_receipt. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.002 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 6 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.002	0x4a7A972F84E2A64b3B9B64AC1383Df5c413c0E59	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x4a7A972F84E2A64b3B9B64AC1383Df5c413c0E59",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "amountUsd": 0.002,
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "properties": {
        "event": {
          "additionalProperties": false,
          "description": "Commitment-only declaration of one execution step.",
          "properties": {
            "agentId": {
              "description": "Identifier of the declaring agent, not an independently verified identity.",
              "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
              "type": "string"
            },
            "completedAt": {
              "description": "Declared completion in UTC with milliseconds, at or after start.",
              "format": "date-time",
              "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d\\.\\d{3}(?:Z))$",
              "type": "string"
            },
            "inputHash": {
              "additionalProperties": false,
              "description": "SHA-256 of the exact input bytes, computed locally. Never send raw input.",
              "properties": {
                "algorithm": {
                  "const": "sha256",
                  "description": "Hash algorithm.",
                  "type": "string"
                },
                "digest": {
                  "description": "64 lowercase hexadecimal characters; SHA-256 of exact bytes.",
                  "pattern": "^[a-f0-9]{64}$",
                  "type": "string"
                }
              },
              "required": [
                "algorithm",
                "digest"
              ],
              "type": "object"
            },
            "outcome": {
              "description": "Outcome declared by the caller; Datoka does not observe execution.",
              "enum": [
                "success",
                "error"
              ],
              "type": "string"
            },
            "outputHash": {
              "additionalProperties": false,
              "description": "SHA-256 of exact output bytes, computed locally. Never send raw output.",
              "properties": {
                "algorithm": {
                  "const": "sha256",
                  "description": "Hash algorithm.",
                  "type": "string"
                },
                "digest": {
                  "description": "64 lowercase hexadecimal characters; SHA-256 of exact bytes.",
                  "pattern": "^[a-f0-9]{64}$",
                  "type": "string"
                }
              },
              "required": [
                "algorithm",
                "digest"
              ],
              "type": "object"
            },
            "runId": {
              "description": "Stable identifier for this execution run.",
              "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
              "type": "string"
            },
            "startedAt": {
              "description": "Declared start time in UTC, with milliseconds.",
              "format": "date-time",
              "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d\\.\\d{3}(?:Z))$",
              "type": "string"
            },
            "stepId": {
              "description": "Stable identifier of the step within the run.",
              "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
              "type": "string"
            },
            "tool": {
              "description": "Tool or operation identifier declared by the caller.",
              "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
              "type": "string"
            },
            "version": {
              "const": "datoka.agent.execution.v1",
              "description": "Declaration format version; preserve this literal.",
              "type": "string"
            }
          },
          "required": [
            "version",
            "agentId",
            "runId",
            "stepId",
            "tool",
            "outcome",
            "startedAt",
            "completedAt",
            "inputHash",
            "outputHash"
          ],
          "type": "object"
        },
        "receipt": {
          "additionalProperties": false,
          "description": "Signed Datoka receipt; verify against independently trusted keys.",
          "properties": {
            "algorithm": {
              "const": "Ed25519",
              "type": "string"
            },
            "body": {
              "additionalProperties": false,
              "properties": {
                "id": {
                  "format": "uuid",
                  "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
                  "type": "string"
                },
                "issuedAt": {
                  "format": "date-time",
                  "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d\\.\\d{3}(?:Z))$",
                  "type": "string"
                },
                "issuer": {
                  "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
                  "type": "string"
                },
                "keyId": {
                  "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
                  "type": "string"
                },
                "previous": {
                  "anyOf": [
                    {
                      "pattern": "^[a-f0-9]{64}$",
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "request": {
                  "additionalProperties": false,
                  "properties": {
                    "chain": {
                      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
                      "type": "string"
                    },
                    "eventType": {
                      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
                      "type": "string"
                    },
                    "scope": {
                      "pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$",
                      "type": "string"
                    },
                    "subject": {
                      "additionalProperties": false,
                      "properties": {
                        "algorithm": {
                          "const": "sha256",
                          "type": "string"
                        },
                        "digest": {
                          "pattern": "^[a-f0-9]{64}$",
                          "type": "string"
                        },
                        "encoding": {
                          "enum": [
                            "jcs",
                            "bytes"
                          ],
                          "type": "string"
                        }
                      },
                      "required": [
                        "algorithm",
                        "encoding",
                        "digest"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "scope",
                    "chain",
                    "eventType",
                    "subject"
                  ],
                  "type": "object"
                },
                "sequence": {
                  "exclusiveMinimum": 0,
                  "maximum": 9007199254740991,
                  "type": "integer"
                },
                "version": {
                  "const": "datoka.receipt.v1",
                  "type": "string"
                }
              },
              "required": [
                "version",
                "id",
                "issuer",
                "keyId",
                "issuedAt",
                "request",
                "sequence",
                "previous"
              ],
              "type": "object"
            },
            "signature": {
              "pattern": "^[A-Za-z0-9_-]{86}$",
              "type": "string"
            }
          },
          "required": [
            "body",
            "algorithm",
            "signature"
          ],
          "type": "object"
        }
      },
      "required": [
        "event",
        "receipt"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "event": {
      "agentId": "string",
      "completedAt": "2026-01-01T00:00:00Z",
      "inputHash": {
        "algorithm": "string",
        "digest": "string"
      },
      "outcome": "success",
      "outputHash": {
        "algorithm": "string",
        "digest": "string"
      },
      "runId": "string",
      "startedAt": "2026-01-01T00:00:00Z",
      "stepId": "string",
      "tool": "string",
      "version": "string"
    },
    "receipt": {
      "algorithm": "string",
      "body": {
        "id": "string",
        "issuedAt": "2026-01-01T00:00:00Z",
        "issuer": "string",
        "keyId": "string",
        "previous": null,
        "request": {
          "chain": "string",
          "eventType": "string",
          "scope": "string",
          "subject": {
            "algorithm": "string",
            "digest": "string",
            "encoding": "jcs"
          }
        },
        "sequence": 0,
        "version": "string"
      },
      "signature": "string"
    }
  },
  "type": "string"
}

Examples

curl

curl "https://datoka-agent.bhazarstudio.workers.dev/v1/operations/issue_agent_receipt"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://datoka-agent.bhazarstudio.workers.dev/v1/operations/issue_agent_receipt");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://datoka-agent.bhazarstudio.workers.dev/v1/operations/issue_agent_receipt")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: datoka-agent.bhazarstudio.workers.dev
Endpoint: https://datoka-agent.bhazarstudio.workers.dev/v1/operations/issue_agent_receipt
Machine-readable: /resources/40621.json