MCP SQL guardrail for agents
Add MCP server url https://sqlguard.io/mcp. Call sqlguard_handshake, then sqlguard_session ($0.50) or sqlguard_cert ($0.05), then sqlguard_verify. Only execute mutating SQL after ok:true. Docs: /AGENTS.md · /INTEGRATE.md · /CURSOR.md · /CLAUDE.md.
Runnable path
POST https://sqlguard.io/v1/session
Header: X-SQLGuard-Agent: <0x-wallet>
Body: {"agent_id":"<0x-wallet>"}
# 402 → Exact USDC Base → 0xC8d524703f1751b565a220087D1d4c44a413C1D7 ($0.50)
# Then POST /v1/session/cert → POST /v1/verify → execute
# First taste:
POST https://sqlguard.io/v1/cert # $0.05 Exact
# Free tip only (not authorize):
POST https://sqlguard.io/v1/probe