Best Alternatives to Aaaa Nexus — Formally Verified AI Safety APIs

Formally verified AI safety APIs. 75+ endpoints, pay-per-call via USDC x402, no signup.

Toolcall

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30 pay-per-call APIs for AI agents: compliance, trade, safety, web, data. USDC on Base via x402.

Pay-per-call safety guards for AI agents: injection, tool-call, signing, secret, x402-trust.

TikTok creator analytics, video stats, comments & search. Pay-per-call via x402, no signup.

1,000+ APIs for AI agents via x402 USDC micropayments on Base. $0.01/call, no signup.

Official French & European company data for AI agents. Pay-per-call in USDC via x402, no API key.

Bi-temporal memory-as-a-service and paid agent labor. Pay-per-call USDC via x402; signed receipts.

Summarize YouTube videos or fetch transcripts. Pay-per-call via x402 (USDC on Base), no account.

177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent

Popdot AI

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Rent verified subdomains by the hour, day, or month. Free 24h trials, x402 USDC on Base.

Pay-per-call crypto intelligence: 19 tools over 10+ live sources, USDC via x402.

Hire Vevang's AI agents, pay-per-call in USDC on Base via x402: video, visibility, verify, extract