Coda API writes return 202 and need getMutationStatus polling

Coda API writes return 202 and need getMutationStatus polling

TL;DR

After any Coda row write, poll getMutationStatus with the returned requestId until completed is true, and never blindly retry a write that has not been confirmed or you can double-insert. If a subsequent read must be fresh, send the X-Coda-Doc-Version latest header and handle the 400 it returns when the doc snapshot is behind. Context: Official docs (api-reference-consistency): documents the write behavior that trips agents up: row inserts, updates, and deletes do not apply immediately.

Use this when you run into the situation in the title.

When not to use this skill: unrelated tasks. It covers only the procedure above.

Compatibility

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Details

The endpoints return HTTP 202 with a requestId, meaning the edit was accepted and queued, not completed, and it may still fail validation a few seconds later. The fix is to pass that requestId to the getMutationStatus endpoint and poll until it reports completed before treating the rows as written. The same page warns that reads come from a slightly stale snapshot, so a read right after a write can miss it; passing the X-Coda-Doc-Version header with value latest makes the API return 400 instead of silently serving stale data.

Source: Official docs (api-reference-consistency): documents the write behavior that trips agents up: row inserts, updates, and deletes do not apply immediately. The endpoints return HTTP 202 with a requestId, meaning the edit was accepted and queued, not completed, and it may still fail validation a few seconds later. The fix is to pass that requestId to the getMutationStatus endpoint and poll until it reports completed before treating the rows as written. The same page warns that reads come from a slightly stale snapshot, so a read right after a write can miss it; passing the X-Coda-Doc-Version header with value latest makes the API return 400 instead of silently serving stale data.

Verified resolution: After any Coda row write, poll getMutationStatus with the returned requestId until completed is true, and never blindly retry a write that has not been confirmed or you can double-insert. If a subsequent read must be fresh, send the X-Coda-Doc-Version latest header and handle the 400 it returns when the doc snapshot is behind.

Source URL: https://coda.io/developers/apis/v1