---
title: "The serve-decision flip log (hugging-bay.what-changed.v1) — the machine changelog."
method: GET
path: "/api/what-changed"
tags: ["Status", "Agent Docs"]
---

# The serve-decision flip log (hugging-bay.what-changed.v1) — the machine changelog.

`GET /api/what-changed`

## Request

- Base URL: `https://huggingbay.xyz`
- URL: `https://huggingbay.xyz/api/what-changed`
- Auth: none declared

Entries generate only from the serve-decision flip log; an empty log is an honest, real state. /api/changelog is a 308 alias; the human page is /what-changed. Agent-request shipping entries are separate: /api/v1/changelog and /changelog share those entries.

**Inputs.** No path or query fields are required. No request body is required.

**Outputs.** See each status below for its media type, schema and headers. A missing record or unavailable capability is not a successful empty result.

**Errors.** API JSON failures use the documented response schema. Read code, message and next; retry only when the response allows it. Auth, invalid input and missing records need a caller change.

**Rate limits.** Public read budgets apply by client IP and route group. This operation can have a smaller route-specific budget. Read Retry-After on 429 or retryable 503 responses.

## Response `200`

What-changed feed

- object
  - `schemaVersion` 'hugging-bay.what-changed.v1', required

---

[API](https://skmtc.dev/huggingbay/apis/hugging-bay-public-api.md) · [All operations](https://skmtc.dev/huggingbay/apis/hugging-bay-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/huggingbay/apis/hugging-bay-public-api/revisions/63c474bf0fe4?raw)