feat(examples): add TrustBoost PII Sanitizer x402 example — autonomou…

[teodorofodocrispin-cmyk]

Description

Adds a Python example showing how an AgentKit agent autonomously pays for PII sanitization via x402 on Solana — no human intervention required.

The agent discovers TrustBoost via /.well-known/agent-card.json, calls /sanitize without payment, receives HTTP 402 with x402 payment instructions, pays 149 USDC from its CDP wallet on Solana, and receives sanitized text + verifiable on-chain proof of sanitization.

This addresses a critical gap for agents processing user data before sending to LLMs — required for GDPR, LGPD, and EU AI Act compliance (enforcement: August 2, 2026).

Tests

Chatbot: python/examples/trustboost-pii-sanitizer/agent.py
Network: Solana Mainnet (TRIAL mode for testing)
Setup: export TRUSTBOOST_TRIAL=true

Prompt: python agent.py

---

[TrustBoost] Discovered: TrustBoost PII Sanitizer v2.6.0
[Mode] TRIAL (50 free)

[English]
Input: Contact John at john@example.com, SSN: 123-45-6789
Output: Contact [REDACTED] at [REDACTED], SSN: [REDACTED]
Score: 0.85 | Risk: CRITICAL

[Spanish LATAM]
Input: Cliente Juan Lopez, RFC: LOPJ850101ABC
Output: Cliente [REDACTED], RFC: [REDACTED]
Score: 0.6 | Risk: PRIVATE

[Japanese]
Input: 田中太郎、マイナンバー：123456789012
Output: [REDACTED]、マイナンバー：[REDACTED]
Score: 0.85 | Risk: CRITICAL

Health check:
curl https://api.trustboost.dev/health
→ {"status":"ok","version":"2.6.0"}

Checklist

• Added documentation to all relevant README.md files

[cb-heimdall]

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