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# Clef articles

Calling External APIs from a Contentful App is Slow? We Reduced the Approximately 3 Seconds via App Actions to Approximately 1 Second with Signed Requests
小西諒
2026.10.17
I tried showing document images (Japanese) to OpenAI's Responses API to have it find errors in OCR results
けーま (川田 圭真)
2026.10.11
What is OpenAI's Decisions API? A Summary of the Differences with Jev and Clef
けーま (川田 圭真)
2026.10.07
I compared document value matching using Cloudflare's Clef with Jev
けーま (川田 圭真)
2026.10.05
I tried having Cloudflare's Clef classify document types
けーま (川田 圭真)
2026.10.04
What is Cloudflare's Clef? A Summary of the Differences with Jev
けーま (川田 圭真)
2026.10.04