get_changelog

Returns your API's recent changes, and which ones break existing calls. Lets an agent answer "what do I need to change to upgrade?" from your real history. Each entry is one spec version compared with the one before.

When it's listed

On every server, in every tool mode. A tool group can leave the documentation tools out.

Arguments

breakingOnlybooleandefault: false

Only entries with breaking changes.

projectIdstring

The project to read. Leave it out: the server already knows its project, and passing another one reads that project instead.

Returns

The latest release note, when you wrote one, then the three most recent entries. Each has its versions and date, then the endpoints that were added, removed or changed, with what changed beneath each and (breaking) on a change that breaks calls. Fifteen endpoints are listed per entry at most.

Hints

The annotations a client reads to decide what may run without asking the user.

Hint	Value	When true, it means
`readOnlyHint`	`true`	It doesn't change anything
`destructiveHint`	`false`	It can change or delete data
`idempotentHint`	`true`	Calling it twice does no more than once
`openWorldHint`	`true`	It reaches outside the server, over the network

Examples

Breaking changes only

Run against a test project with several spec versions.

{
  "name": "get_changelog",
  "arguments": {
    "breakingOnly": true
  }
}

## 2.0.0 → 1.0.7 (**Breaking changes**)
*October 7, 2026*

- **GET /pets** removed
- **GET /pets/{petId}** removed
- **POST /pet** added
- **PUT /pet** added
- **GET /pet/{petId}** added
- **POST /pet/{petId}** added
- **DELETE /pet/{petId}** added
- **POST /pet/{petId}/uploadImage** added
- **GET /pet/findByStatus** added
- **GET /pet/findByTags** added
- **GET /store/inventory** added
- **POST /store/order** added
- **GET /store/order/{orderId}** added
- **DELETE /store/order/{orderId}** added
- **POST /user** added
- and 7 more endpoints

---

## 2.0.0 → 2.0.0 (**Breaking changes**)
*October 7, 2026*

- **GET /owners** removed
- **GET /pets/{petId}** added

---
…

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