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Verification infrastructure
for autonomous AI.

Your agent calls us before it acts. We verify the reasoning. It settles with proof.
Three products, one API call. Pay per verification, no minimums.

How It Works ↓ Explore Products
Four steps. Zero humans in the loop.

ThoughtProof sits between your agent's decision and its action. The agent calls our API, gets a verdict, and acts on it — or stops.

🤖
1. Agent Decides
Your agent generates a plan, trade, or response it wants to execute.
🔍
2. ThoughtProof Verifies
One API call. Multiple independent models evaluate the reasoning. Cascade escalation if needed.
3. Verdict Returned
ALLOW, BLOCK, or UNCERTAIN — with confidence score and evidence chain.
⛓️
4. Act or Stop
Agent executes on ALLOW, halts on BLOCK. Optional on-chain attestation via EAS for audit trail.
One API call to verify any agent decision.
curl — PLV API
curl -X POST https://verify.thoughtproof.ai/v2/verify \
  -H "Content-Type: application/json" \
  -H "X-API-Key: tp_v2_your_key" \
  -d '{
    "question": "Transfer 500 USDC to marketing?",
    "answer": "Yes — approved in DAO vote #47.",
    "trace": "Checked governance, verified wallet",
    "plan_steps": [{"index":0,
      "description":"Verify governance approval",
      "criticality":"critical"}],
    "tier": "standard"
  }'
Returns: { verdict: "ALLOW", confidence: 1.0 }
TypeScript — pot-sdk
import { verify } from 'pot-sdk';

const result = await verify({
  question: "Transfer 500 USDC to marketing?",
  answer:   "Yes — approved in DAO vote #47.",
  trace:    "Checked governance, verified wallet",
  plan_steps: [{ index: 0,
    description: "Verify governance approval",
    criticality: "critical" }],
});

if (result.verdict === "BLOCK") {
  agent.halt("Verification failed");
}
Full SDK docs →
Which product fits your agent?
🛡️ Sentinel
"My agent runs autonomously and I need a safety check before every action."
Best for: high-frequency loops, handoffs, memory writes
📋 PLV
"I need to verify that my agent's output matches the plan and evidence — with an audit trail."
Best for: compliance, banking, regulated workflows
⚖️ RV
"I have high-value decisions where I need multiple independent models to challenge the reasoning."
Best for: trades, settlements, dispute resolution
Three products. One verification stack.

Sentinel checks before every action. PLV audits agent output against plans and evidence. RV runs adversarial red-team critique on high-stakes decisions. Use them independently or compose them.

Hosted API

Sentinel

Pre-Execution Checkpoint

Verify reasoning before irreversible actions. Lightweight cascade check for high-frequency agentic loops.

  • 🤖 Agent-to-agent handoff verification
  • 📝 Memory write safety checks
  • 🔄 Plan revision validation
  • 📤 Output synthesis gating
from $0.003/call ~3s latency 0 false ALLOWs
Hosted API

PLV

Plan-Level Verification

Structured cascade audit of agent output against plan or evidence. Cost-efficient escalation with optional on-chain attestation.

  • 🏦 Banking & compliance verification
  • 📋 Audit trails with EAS attestation
  • 🔍 Hallucination detection in agent plans
  • 🇪🇺 EU AI Act readiness (Art. 9, 13, 14)
from $0.04/call 98.1% accuracy 0 false ALLOWs
x402 Micropayment

RV

Reasoning Verification

Adversarial multi-model pipeline. Independent models evaluate, a dedicated red-team critic challenges, a synthesizer decides.

  • ⚖️ Settlement conditions & gating predicates
  • 🛡️ Prompt injection detection via model divergence
  • 🔐 High-stakes decision verification
  • 💰 Agentic commerce dispute resolution
from $0.008/call x402 pay-per-call EdDSA signed
Developer tools. MIT-licensed.

Verify locally before integrating the hosted APIs. Auditable by your security team.

MIT License

pot-cli & pot-sdk

Local verification from the terminal or embedded in your agent code. Run the same verification engine locally for development and testing.

npm install -g pot-cli
MIT License

thoughtproof-mcp

MCP server for AI assistants. Run ThoughtProof verification from Cursor, Claude Desktop, or any MCP-compatible client.

npx thoughtproof-mcp

Active contributor to multiple Ethereum standards for agent identity, verification, and commerce. Learn more →