Best APIs by Category

Browse APIs ranked by Probe compliance score — 34 automated checks covering security, compliance, and agent readiness. Data-driven rankings, not upvotes.

Payment & Settlement APIs

USDC offramps, x402 payment providers, fiat settlement, crypto payment processing and more.

View ranking →

AI & LLM APIs

OpenAI, Anthropic, Mistral, Groq and other large language model APIs ranked by compliance.

View ranking →

Blockchain & Web3 APIs

Ethereum, Solana, DeFi protocols, onchain data providers, and crypto exchange APIs.

View ranking →

AI Agent Platforms

Autonomous agent frameworks, trust scoring, agentic commerce tools and agent infrastructure.

View ranking →

Developer Tools & Infrastructure

Cloud platforms, databases, CI/CD tools, monitoring, and developer productivity APIs.

View ranking →

Enterprise & SaaS APIs

Shopify, Twilio, Visa, Mastercard, SAP and other enterprise platform APIs.

View ranking →

Popular comparisons

Side-by-side compliance comparisons of top APIs.

Get your API ranked

Run a free compliance audit — takes 30 seconds, no signup required.

Run free audit →