Leaderboard

Which APIs are most ready
for AI agents?

We ran seven production OpenAPI specs through AgenticScore and ranked them by overall score. Higher = easier for LLMs to consume reliably.

Scores based on spec snapshots from 2026-05-25. Spec quality changes over time as vendors update their APIs.
#APIScoreGradeOperationsSpec version
1Plaid63C3302020-09-14_1.688.6
2Twilio58D1971.0.0
3Vercel58D3040.0.1
4GitHub55D1,1861.1.4
5Stripe37F5872026-05-27.dahlia
6OpenAI32F2422.3.0
7Resend19F831.5.0

Click any API to see the full breakdown — category scores, key findings, and what they should fix.

How does your API score?

Run AgenticScore on your own spec and see exactly what to fix.

npx agenticscore score ./openapi.yaml
Install the CLI →