---
title: "Proxy Drive Thumbnail"
method: GET
path: "/api/thumbnails/{file_id}"
---

# Proxy Drive Thumbnail

`GET /api/thumbnails/{file_id}`

## Request

- Base URL: `https://pozeidon.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://pozeidon.ai/api/thumbnails/{file_id}`
- Auth: none declared

Verify the signed URL, then proxy the JPEG from the storage service
under a scoped token. Any failure → placeholder (see module docstring).

Dual-served at both `/api/thumbnails` (new, provider-neutral) and the
legacy `/api/drive-thumbnails`. The original reason was in-flight signed
URLs (6h TTL) during the signer-base flip, and that window closed long ago.
The mount STAYS for a different reason, measured 2026-09-01.

145 of 3,085 rows in `pozeidon.transcripts` still carry the old path in
their stored events (newest 2026-06-04; nothing has emitted it since —
`sign_thumbnail_url` builds only `/api/thumbnails`). Row count alone does
not justify the mount, because `/api/transcripts` lists a tenant's newest
50 (200 max) — so most of those are past the end of the list. Ranking them
per tenant is what decides it:

    tenant                       old  best_rank  in_50  in_200
    t_019e4d70…bc292bd5dead      107       1574      0       0
    t_019dbe27…ef5a22c56db7       33         23      5      33
    t_019e8283…889aec7c0d33        5          6      5       5

107 are indeed unreachable. But **38 sit inside the visible list for two
tenants, and 10 of those are on the first page** — one tenant's 6th-most-
recent conversation is among them, because that tenant has barely run
anything since June, so its June history IS its recent history.

Those signatures are long expired, so the route answers them with the
placeholder; drop the mount and those 38 render a broken-image icon on
the first screen two tenants see. One decorator is cheaper than that.

Re-run the query above before removing this: when the two tenants push
those rows past rank 200, the mount has nothing left to protect.

## Path parameters

- `file_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/pozeidon/apis/pozeidon-demo.md) · [All operations](https://skmtc.dev/pozeidon/apis/pozeidon-demo/llms.txt) · [OpenAPI document](https://skmtc.dev/pozeidon/apis/pozeidon-demo/revisions/961f0099c084?raw)