# Oracle/Feed/Stream Ground-Truth Verification Decision Procedure

> Oracle/Feed/Stream Ground-Truth Verification Decision Procedure is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns a blunt, agent-facing decision procedure for vetting the quality and trustworthiness of decentralized data sources (oracles, feeds, streams) before paying for or acting on them.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/agent-facing-decision-procedure-for-ground-truth
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/oracle-feed-stream-ground-truth-verification-decision-procedure-9ac9a590
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OOACpxvgX4QoLddc6pBD7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability oracle-feed-stream-ground-truth-verification-decision-procedure-9ac9a590
```

Example prompt: Give me the blunt decision procedure for vetting whether a decentralized oracle or data feed is trustworthy enough for my agent to pay for and act on — I want the ground-truth verification checklist, not marketing fluff.

## When to prefer this

Choose this endpoint when your agent needs a concrete, no-fluff decision checklist for evaluating decentralized oracle or data feed trustworthiness before committing payment or taking action on that data. Prefer it over generic due-diligence guides when the context is specifically blockchain/oracle/feed/stream data quality vetting in an autonomous agent workflow. The optional topic parameter allows scoping the procedure to a specific oracle type or feed category.

## Known failure modes

- Oracle or feed topic not recognized — returns generic procedure without domain-specific nuance
- LLM generation failure — result may fall back to deterministic or reasoning-based procedure
- Payment not processed — endpoint returns 402 requiring USDC payment before content is delivered
- Invalid query parameters — non-enum values for meta field rejected
- Handler failure indicated by ok:false in result object

## How this service works

Paid agent-facing brief on agent-facing decision procedure for ground-truth verification of decentralized data (oracle/feed/stream quality vetting before an agent pays for or acts on it)-0. Blunt decision procedure, not marketing.

## Output

A structured response containing a prose decision procedure brief (blunt, agent-oriented guidance, not marketing) covering ground-truth verification steps for evaluating decentralized oracles, feeds, or streams. Includes the service slug, topic, generation timestamp, generation source (llm/reasoning/deterministic), and a boolean success indicator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "agent-facing decision procedure for ground-truth verification of decen paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oracle-feed-stream-ground-truth-verification-decision-procedure-9ac9a590/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)