Overview
Greenlight API Check is a developer utility for testing OpenAI-compatible, Claude/Anthropic-compatible, and Gemini-compatible API relay endpoints before users rely on them. It checks endpoint availability, authentication, latency, model consistency, streaming behavior, error structure, billing signals, and key-safety boundaries, then generates a shareable report for preflight review. It is not an API relay provider, key seller, recharge service, or upstream channel.
Key features
- API endpoint availability check
- Model consistency and model-substitution risk signals
- Latency and streaming-response checks
- Billing and usage transparency signals
- API key safety guidance
- Shareable report sample and public methodology pages
Pros and cons
Pros
- Useful before developers recharge or integrate with a relay endpoint
- Focused on API reliability, model authenticity, and key safety
- Free to use
- Clear boundary: diagnostics only, not a relay provider
Cons
- A single check is not a long-term uptime guarantee
- Users should still run small-traffic production testing and manual review
- Users should use low-permission test keys rather than production keys
Best for
Developers, AI app builders, small teams, and users comparing AI API relay/base URL providers before recharge or integration.
Pricing
Free tier