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APIEval-20

APIEval-20

An open benchmark for AI agents that test APIs

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About APIEval-20

APIEval-20 is a black-box benchmark for API testing agents. Each agent gets only a JSON schema and one sample payload, then generates a test suite. We run those tests against live reference APIs with planted bugs and score bug detection, API coverage, and efficiency. Unlike LLM-as-judge evals, scoring is fully objective: a bug is either caught or it isn’t. Tasks span auth, errors, pagination, schemas, and multi-step flows. Open on Hugging Face.

Frequently Asked Questions

What is APIEval-20?

APIEval-20 is APIEval-20 is a black-box benchmark for API testing agents. Each agent gets only a JSON schema and one sample payload, then generates a test suite. We run those tests against live reference APIs with planted bugs and score bug detection, API coverage, and efficiency. Unlike LLM-as-judge evals, scoring is fully objective: a bug is either caught or it isn’t. Tasks span auth, errors, pagination, schemas, and multi-step flows. Open on Hugging Face.

Is APIEval-20 free?

Yes, APIEval-20 is free to use.

What are the best alternatives to APIEval-20?

Some popular alternatives to APIEval-20 include Airtop Auth, OpenAI o3-mini, Anything API, Fish Audio S1. Compare their monthly traffic and features above.

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