Scalar
Scalar is a platform for building API interfaces including documentation, SDKs, and secure MCP servers from OpenAPI specifications. It keeps all interfaces in sync as APIs evolve and emphasizes open-source, accessibility, and API-first principles.
31/38 applicable signals pass. Open the Capabilities tab for the full signal breakdown, or Issues for the highest-impact gaps.
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Frequently asked about Scalar
How Scalar compares
Scalar scores 83 out of 100, 24.8 points above the 58.2 average across the 406 tools we have scored.
Where Scalar fails alongside almost everyone, which is the industry gap rather than a mark against this product:
- Retry behavior documented, where only 9% of scored tools do this (35 of 392).
- Idempotency support, where only 5% of scored tools do this (19 of 392).
Population figures are read live from the scored registry. We sell nothing listed here and take no payment for a score. See the full dataset.
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