# DCL Trust Oracle — AI/LLM Output Audit (x402 MCP)

Checks agent responses against policies and records verifiable decision metadata. Use it to screen outputs for injection attempts, unsafe text, or exposed secrets.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 1
- Author: Fronesis-Labs
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/Fronesis-Labs/dcl-webhook
- Updated: 2026-10-17
- HTML: https://affpapa.org/en/nevibecode/mcp/dcl-trust-oracle-aillm-output-audit-x402-mcp

## What it does

DCL Trust Oracle evaluates agent output and adds hashes and decision metadata to a tamper-evident chain; it does not store raw message content. An audit lookup by transaction hash can return the verdict, confidence, reason, and agent details. The chain also makes changes to past records detectable.

Its MCP tools cover prompt injection, harmful text, secret and PII exposure, plus format adherence and contextual drift. You can submit a single result or a batch of up to 200 items per MCP call. After an action, request a basic or deep audit; a session tool supports ongoing drift tracking. Calls are paid, with prices starting at $0.01 per call.

Claude Code connects over HTTP to the hosted MCP endpoint, so local server startup is unnecessary. For local development, the project requires Python 3.11+, `requirements.txt`, and `mcp_server.py`. The deep forensic audit costs $0.50 per call, so choose it when its extra context is needed.

## Requirements
- Remote server: `https://mcp.fronesislabs.com/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http dcl-trust-oracle https://mcp.fronesislabs.com/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add dcl-trust-oracle-aillm-output-audit-x402-mcp --url https://mcp.fronesislabs.com/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "dcl-trust-oracle-aillm-output-audit-x402-mcp": {
            "url": "https://mcp.fronesislabs.com/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "dcl-trust-oracle-aillm-output-audit-x402-mcp": {
            "type": "http",
            "url": "https://mcp.fronesislabs.com/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http dcl-trust-oracle-aillm-output-audit-x402-mcp https://mcp.fronesislabs.com/mcp
```

## When to use it
- screen an agent response before it reaches a user
- detect prompt injection and role hijacking attempts
- scan output for exposed credentials or PII
- inspect an earlier decision using its transaction hash
- track drift across a long-running audit session

## Example prompts
- Check this response for prompt injection before it reaches the user.
- Scan this output for exposed credentials and personal information.
- Use the transaction hash to retrieve the audit and explain its verdict.

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md