thoughtproof-mcp
OfficialThe ThoughtProof MCP server verifies AI-generated reasoning and claims using adversarial multi-model consensus (Grok, Gemini, DeepSeek, Sonnet), helping you decide whether to trust and act on AI outputs.
Verify claims and reasoning: Submit any decision or reasoning claim via
verify_claim/verify_reasoningto receive a verdict (ALLOW, HOLD, UNCERTAIN, or DISSENT), a confidence score, and up to 3 key objections explaining why a claim may be challengedDomain-specific verification: Tailor analysis to
financial,medical,legal,code, orgeneralcontexts for more accurate assessmentsRisk-adjusted analysis: Set a stake level (
low,medium,high,critical) to adjust confidence thresholds based on decision consequenceAdjust verification depth: Choose between fast (2 models), standard (4 models), or deep (5+ models) to balance speed and cost ($0.008–$0.08 per verification)
Check agent trust scores: Use
check_agent_scoreto look up composite trust scores for specific agents, optionally filtered by domainGuard against hallucinations: Use verdicts and objections to validate AI outputs before acting on them
Allows looking up agent trust scores on the ERC-8004 registry, an Ethereum-based autonomous agent registry.
thoughtproof-mcp
MCP server for ThoughtProof — verify AI reasoning with adversarial multi-model consensus.
3–4 LLMs (Grok, Gemini, DeepSeek, Sonnet) independently evaluate every claim. A dedicated red-team model critiques their verdicts. A synthesizer (Sonnet) weighs everything and returns ALLOW, BLOCK, or UNCERTAIN with confidence score and objections.
Quick Start
{
"mcpServers": {
"thoughtproof": {
"command": "npx",
"args": ["-y", "thoughtproof-mcp"],
"env": {
"THOUGHTPROOF_API_KEY": "tp_op_your_key_here"
}
}
}
}Works with Claude Desktop, Cursor, Windsurf, Cline, and any MCP-compatible client.
Related MCP server: happy-thoughts
Tools
verify_claim
Verify any claim or AI-generated reasoning before acting on it.
Parameter | Type | Default | Description |
| string | (required) | The text to verify |
|
|
| Risk level — higher stakes trigger deeper verification |
|
|
| Domain context for specialized verification |
|
|
| Verification depth |
check_agent_score
Look up an agent's composite trust score on the ERC-8004 registry.
Parameter | Type | Description |
| string | Agent ID to look up |
| string | Optional domain filter |
Example
In Claude Desktop or Cursor, just ask:
"Verify the claim: GPT-5 achieves 95% accuracy on MMLU-Pro"
The tool returns:
⚠️ UNCERTAIN (42% confidence)
Claim: "GPT-5 achieves 95% accuracy on MMLU-Pro"
Objections:
- Insufficient public benchmark data to confirm
- Historical accuracy claims have been overstated
- MMLU-Pro methodology has known ceiling effects
⚡ 3.2s | Adversarial Multi-Model ConsensusHow It Works
Your AI Agent
│
▼
┌──────────────────┐
│ thoughtproof-mcp │ ← MCP Server (this package)
└──────────────────┘
│
▼
┌──────────────────┐
│ ThoughtProof API │ ← api.thoughtproof.ai (RV)
└──────────────────┘
│
▼
┌───────────────────────────────────────────┐
│ Stage 1: Independent Evaluation │
│ 3–4 LLMs (Grok, Gemini, DeepSeek, │
│ Sonnet) each examine the claim │
│ │
│ Stage 2: Red-Team Critique │
│ 1 dedicated model challenges all │
│ initial verdicts │
│ │
│ Stage 3: Synthesis │
│ Sonnet weighs verdicts + critique │
│ → final decision │
└───────────────────────────────────────────┘
│
▼
ALLOW / BLOCK / UNCERTAIN
+ confidence % + objectionsPricing
Speed | Models | Cost per verification |
fast | 2 | $0.008 |
standard | 4 | $0.02 |
deep | 5+ | $0.08 |
Payment: API key (operator account) or x402 micropayment (USDC on Base).
API Key
Get an operator API key at thoughtproof.ai. Without a key, verifications use x402 micropayments automatically.
Configuration
Environment Variable | Default | Description |
| (none) | Operator API key |
|
| API base URL |
Development
git clone https://github.com/ThoughtProof/thoughtproof-mcp.git
cd thoughtproof-mcp
npm install
npm run build
npm test
npm run dev # Run with tsx (hot reload)
npm run inspect # Test with MCP InspectorRelated
ThoughtProof — Decision verification for AI agents
pot-cli — CLI for reasoning verification
ERC-8004 — Autonomous Agent Registry
License
MIT — ThoughtProof
Maintenance
Tools
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