DCL Trust Oracle MCP MCP server

A production MCP server that seals AI agent decisions into a tamper-evident hash chain for deterministic audit and verification. It provides tools for policy evaluation, safety checks, and output sanitization, metered via x402 payments on Base without requiring API keys.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Fronesis Labs

MCP endpoint (Streamable HTTP)

https://mcp.fronesislabs.com/mcp

Vendor documentation

What you can do with it

Verify AI agent decision integrity via hash chains
Evaluate agent outputs for safety and jailbreaks
Audit agent actions with tamper-evident records
Check for secrets and PII in agent responses

Tools advertised by the last live check:

dcl_evaluate_fast
dcl_evaluate_strict
dcl_evaluate_jailbreak
dcl_evaluate_safety
dcl_evaluate_quality
dcl_evaluate_secrets
dcl_evaluate_pii
dcl_evaluate_batch
dcl_pipeline_start
dcl_audit_decode
dcl_audit_decode_deep
dcl_evaluate_jailbreak_crypto
dcl_evaluate_wallet
dcl_evaluate_trade
dcl_evaluate_mev
dcl_evaluate_signal
dcl_evaluate_output_sanitizer
dcl_commit

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http dcl-trust-oracle-mcp https://mcp.fronesislabs.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add dcl-trust-oracle-mcp --url https://mcp.fronesislabs.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable dcl-trust-oracle-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "dcl-trust-oracle-mcp": {
      "url": "https://mcp.fronesislabs.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "dcl-trust-oracle-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.fronesislabs.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start dcl-trust-oracle-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "dcl-trust-oracle-mcp": {
      "type": "http",
      "url": "https://mcp.fronesislabs.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http dcl-trust-oracle-mcp https://mcp.fronesislabs.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "dcl-trust-oracle-mcp": {
      "url": "https://mcp.fronesislabs.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "dcl-trust-oracle-mcp": {
      "serverUrl": "https://mcp.fronesislabs.com/mcp"
    }
  }
}

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