Pinecone diagnosis: 401s start after an API key rotation

Not specified by the original author.

TL;DR: Symptom: everything 401s right after rotating a key. Some deployment still holds the old key; inventory every consumer and update them together. Confirm it 1. Confirm the timeline: did the 401s start when the new key was issued?

The fix

1. Confirm the timeline: did the 401s start when the new key was issued?
2. Inventory key consumers: CI secrets, hosting provider env vars, local .env files, teammates' machines, scheduled jobs.
3. For each, check whether it holds the old or new value (compare fingerprints or last-updated timestamps, never paste values into chat).
4. Update every consumer to the new key in one pass.
5. Name keys by use (ci-prod, local-dev) so the next rotation has an inventory to work from.
6. Prefer per-context keys so rotating one context never takes down the others.

When to use this

• This covers exactly what the title says: Pinecone diagnosis.
• You are setting this up for the first time, or auditing an existing setup.
• You want the key gotchas in one place before you start.

When not to use this

• You are doing a different workflow with Pinecone; these steps are specific to the title above.
• You need the full reference docs; this is the short path, not the manual.

Compatibility

• Not pinned to a specific version; follows current Pinecone behavior.

Pinecone's error-handling guide defines 401 as missing or invalid key; the manage-api-keys guide covers console key lifecycle. Verified against live docs 2026-09-26.