# DCL Trust Oracle – Deep Audit Chain Record Lookup

> DCL Trust Oracle – Deep Audit Chain Record Lookup is a paid API for AI agents from bazaar.fronesislabs.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-27).

Retrieves a single audit-chain record by transaction hash, including drift context, chain position, tamper detection location, and chain integrity status.

## Facts

- Endpoint: GET https://bazaar.fronesislabs.com/audit/:tx_hash/deep?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dcl-trust-oracle-deep-audit-chain-record-lookup-ce0a0791
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LV6Nz7tkPRjaw8VGdvusA

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 dcl-trust-oracle-deep-audit-chain-record-lookup-ce0a0791
```

Example prompt: Pull the deep audit record for transaction hash 0xabc123def456 from the DCL Trust Oracle — I need the chain position, drift context, tamper location, and integrity status.

## When to prefer this

Use this endpoint when you already have a tx_hash from a prior DCL evaluate or scan call and need the full deep audit context — specifically chain position, drift context, and tamper detection details. Prefer this over the basic audit record endpoint when you need chain_index, prev_hash, tampered_at_index, tamper_reason, and drift_context in a single response. This is the right endpoint for compliance reviews, tamper investigations, and behavioral drift analysis on previously evaluated agent actions.

## Known failure modes

- tx_hash not found – returns 404 if the transaction hash does not correspond to any audit record
- Invalid tx_hash format – may return 400 if the hash is malformed
- Payment not completed – returns 402 if the x402 payment has not been made or is insufficient
- Rate limiting – may return 429 if too many requests are made in a short window
- Internal server error – returns 500 if the audit chain backend is unavailable

## How this service works

Read one audit-chain record by tx_hash, plus drift context, chain position and tamper location. Use the tx_hash returned by any earlier DCL evaluate or scan call. GET path parameter, no JSON body.

## Output

Returns a structured audit record containing: tx_hash, agent_id, verdict, reason, confidence score, task_type, timestamp, chain_index (position in audit chain), prev_hash (link to prior record), chain_integrity (boolean indicating whether chain is intact), seal_text, verify_url, tampered_at_index (null if no tampering), tamper_reason (null if no tampering), and drift_context (object or null describing behavioral drift).

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "tx_hash"
     ],
     "properties": {
      "tx_hash": {
       "type": "string",
       "description": "Transaction hash returned by a previous evaluate or scan call."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "tx_hash",
      "agent_id",
      "verdict",
      "reason",
      "confidence",
      "task_type",
      "timestamp",
      "chain_index",
      "prev_hash",
      "chain_integrity",
      "seal_text",
      "verify_url",
      "tampered_at_index",
      "tamper_reason",
      "drift_context"
     ],
     "properties": {
      "reason": {
       "type": "string"
      },
      "tx_hash": {
       "type": "string"
      },
      "verdict": {
       "type": "string"
      },
      "agent_id": {
       "type": "string"
      },
      "prev_hash": {
       "type": "string"
      },
      "seal_text": {
       "type": "string"
      },
      "task_type": {
       "type": "string"
      },
      "timestamp": {
       "type": "number"
      },
      "confidence": {
       "type": "number"
      },
      "verify_url": {
       "type": "string"
      },
      "chain_index": {
       "type": "integer"
      },
      "drift_context": {
       "type": [
        "object",
        "null"
       ]
      },
      "tamper_reason": {
       "type": [
        "string",
        "null"
       ]
      },
      "chain_integrity": {
       "type": "boolean"
      },
      "tampered_at_index": {
       "type": [
        "integer",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dcl-trust-oracle-deep-audit-chain-record-lookup-ce0a0791/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bazaar.fronesislabs.com](https://www.zero.xyz/host/bazaar.fronesislabs.com/llms.txt)