> ## Documentation Index
> Fetch the complete documentation index at: https://neverminedag-sync-api-errors-9d14109.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# API Changelog

> Every wire-shape change between supported Nevermined API versions. The version identifier is the platform release MAJOR.MINOR.

{/* Source of truth: nvm-monorepo apps/api/src/api-versioning/registry.ts. */}

Clients pin an API version per API key (editable in the dashboard) or per request
via the `Nevermined-Version` header; the platform reshapes requests and responses so
every supported pin keeps working. See the [versioning guide](/docs/development-guide/api-versioning).

* **Floor (oldest supported version):** `1.0`
* **Live current version:** `GET /api/v1/meta/versions`

## 1.1

*Changes relative to `1.0`:*

* **Remove the legacy creditsConfig.proofRequired request alias — the canonical key is onchainMirror (clients below 1.1 keep the alias)** (`request`)
  * `POST /api/v1/protocol/plans`
  * `POST /api/v1/protocol/agents/plans`
* **Remove the deprecated always-null permission slots orderLimit/planCost/creditsPerOrder from responses (clients below 1.1 keep receiving them as null)** (`response`)
  * `GET /api/v1/x402/permissions`
  * `GET /api/v1/x402/permissions/:permissionHash`