# Venues, allocations and migrations

Paths on this page are relative to <code>/api/liquidity-studio/v2</code>. Authentication and required headers vary by operation.

[API reference overview](/api-reference/overview/) · [OpenAPI download](/openapi/liquidity-operating-system-v2.openapi.json)

## Operations on this page

| Method | Path | Operation |
| --- | --- | --- |
| <code>GET</code> | <code>/venues</code> | [listVenues](#listVenues) |
| <code>POST</code> | <code>/venues</code> | [createVenues](#createVenues) |
| <code>GET</code> | <code>/venues/{id}</code> | [getVenues](#getVenues) |
| <code>PATCH</code> | <code>/venues/{id}</code> | [supersedeVenues](#supersedeVenues) |
| <code>GET</code> | <code>/venue-observations</code> | [listVenueObservations](#listVenueObservations) |
| <code>GET</code> | <code>/venue-observations/{id}</code> | [getVenueObservations](#getVenueObservations) |
| <code>GET</code> | <code>/allocation-plans</code> | [listAllocationPlans](#listAllocationPlans) |
| <code>POST</code> | <code>/allocation-plans</code> | [createAllocationPlans](#createAllocationPlans) |
| <code>GET</code> | <code>/allocation-plans/{id}</code> | [getAllocationPlans](#getAllocationPlans) |
| <code>GET</code> | <code>/migration-plans</code> | [listMigrationPlans](#listMigrationPlans) |
| <code>POST</code> | <code>/migration-plans</code> | [createMigrationPlans](#createMigrationPlans) |
| <code>GET</code> | <code>/migration-plans/{id}</code> | [getMigrationPlans](#getMigrationPlans) |
| <code>POST</code> | <code>/venues/{id}/index-jobs</code> | [queueVenueIndex](#queueVenueIndex) |
| <code>GET</code> | <code>/migration-plans/{id}/state</code> | [getMigrationPlanState](#getMigrationPlanState) |
| <code>POST</code> | <code>/migration-plans/{id}/transitions</code> | [appendMigrationPlanTransition](#appendMigrationPlanTransition) |

<a id="listVenues"></a>

## List venue profiles

`GET /venues`

Operation ID: <code>listVenues</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>cursor</code> | query | No | <code>string</code> | Opaque cursor returned in the previous response metadata. |
| <code>limit</code> | query | No | <code>integer</code> | Default: <code>50</code>; Minimum: <code>1</code>; Maximum: <code>100</code> |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Latest tenant-isolated aggregate versions | <code>application/json</code>: <code>object</code> |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | Array of All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data&#91;&#93;.allOf&#91;2&#93;.payload</code> | Yes | [VenueProfile](/api-reference/schemas/venue-profile/) | — |
| <code>meta</code> | Yes | <code>object</code> | Additional properties rejected |
| <code>meta.count</code> | Yes | <code>integer</code> | Minimum: <code>0</code> |
| <code>meta.hasMore</code> | Yes | <code>boolean</code> | — |
| <code>meta.nextCursor</code> | No | <code>string</code> | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="createVenues"></a>

## Create venue profiles

`POST /venues`

Operation ID: <code>createVenues</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |

### Request body

Required: **yes**.

**<code>application/json</code>**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>payload</code> | Yes | [VenueProfile](/api-reference/schemas/venue-profile/) | — |
| <code>status</code> | No | [OperatingSystemRecordStatus](/api-reference/schemas/operating-system-record-status/) | — |
| <code>evidenceHashes</code> | No | Array of [Hash](/api-reference/schemas/hash/) | Max items: <code>256</code> |
| <code>reason</code> | Yes | <code>string</code> | Min length: <code>3</code>; Max length: <code>500</code> |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>201</code> | Append-only aggregate created | <code>application/json</code>: <code>object</code> |

**<code>201</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [VenueProfile](/api-reference/schemas/venue-profile/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="getVenues"></a>

## Get one venue profiles aggregate

`GET /venues/{id}`

Operation ID: <code>getVenues</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Current immutable aggregate version | <code>application/json</code>: <code>object</code> |
| <code>404</code> | Not found | No response body declared |

**<code>200</code> response headers**

| Header | Required | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>ETag</code> | Yes | <code>string</code> | — |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [VenueProfile](/api-reference/schemas/venue-profile/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="supersedeVenues"></a>

## Supersede validation-only read-profile metadata; write adapters require a separate signed release

`PATCH /venues/{id}`

Operation ID: <code>supersedeVenues</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>If-Match</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Request body

Required: **yes**.

**<code>application/json</code>**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>payload</code> | No | [VenueProfile](/api-reference/schemas/venue-profile/) | — |
| <code>status</code> | No | <code>string</code> | Allowed: <code>DRAFT</code>, <code>VALIDATED</code>, <code>PAUSED</code>, <code>REVOKED</code> |
| <code>evidenceHashes</code> | No | Array of [Hash](/api-reference/schemas/hash/) | Max items: <code>256</code> |
| <code>reason</code> | Yes | <code>string</code> | Min length: <code>3</code>; Max length: <code>500</code> |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Append-only bounded supersession accepted with deterministic evidence | <code>application/json</code>: <code>object</code> |
| <code>400</code> | Payload or safety transition is outside this bounded operation | No response body declared |
| <code>409</code> | Typed authority workflow is required | No response body declared |
| <code>412</code> | Strong precondition failed | No response body declared |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [VenueProfile](/api-reference/schemas/venue-profile/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="listVenueObservations"></a>

## List venue observations

`GET /venue-observations`

Operation ID: <code>listVenueObservations</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>cursor</code> | query | No | <code>string</code> | Opaque cursor returned in the previous response metadata. |
| <code>limit</code> | query | No | <code>integer</code> | Default: <code>50</code>; Minimum: <code>1</code>; Maximum: <code>100</code> |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Latest tenant-isolated aggregate versions | <code>application/json</code>: <code>object</code> |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | Array of All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data&#91;&#93;.allOf&#91;2&#93;.payload</code> | Yes | [VenueObservation](/api-reference/schemas/venue-observation/) | — |
| <code>meta</code> | Yes | <code>object</code> | Additional properties rejected |
| <code>meta.count</code> | Yes | <code>integer</code> | Minimum: <code>0</code> |
| <code>meta.hasMore</code> | Yes | <code>boolean</code> | — |
| <code>meta.nextCursor</code> | No | <code>string</code> | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="getVenueObservations"></a>

## Get one venue observations aggregate

`GET /venue-observations/{id}`

Operation ID: <code>getVenueObservations</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Current immutable aggregate version | <code>application/json</code>: <code>object</code> |
| <code>404</code> | Not found | No response body declared |

**<code>200</code> response headers**

| Header | Required | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>ETag</code> | Yes | <code>string</code> | — |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [VenueObservation](/api-reference/schemas/venue-observation/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="listAllocationPlans"></a>

## List multi-venue allocation plans

`GET /allocation-plans`

Operation ID: <code>listAllocationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>cursor</code> | query | No | <code>string</code> | Opaque cursor returned in the previous response metadata. |
| <code>limit</code> | query | No | <code>integer</code> | Default: <code>50</code>; Minimum: <code>1</code>; Maximum: <code>100</code> |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Latest tenant-isolated aggregate versions | <code>application/json</code>: <code>object</code> |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | Array of All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data&#91;&#93;.allOf&#91;2&#93;.payload</code> | Yes | [AllocationPlan](/api-reference/schemas/allocation-plan/) | — |
| <code>meta</code> | Yes | <code>object</code> | Additional properties rejected |
| <code>meta.count</code> | Yes | <code>integer</code> | Minimum: <code>0</code> |
| <code>meta.hasMore</code> | Yes | <code>boolean</code> | — |
| <code>meta.nextCursor</code> | No | <code>string</code> | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="createAllocationPlans"></a>

## Create multi-venue allocation plans

`POST /allocation-plans`

Operation ID: <code>createAllocationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |

### Request body

Required: **yes**.

**<code>application/json</code>**

[AllocationRequest](/api-reference/schemas/allocation-request/)

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>201</code> | Append-only aggregate created | <code>application/json</code>: <code>object</code> |

**<code>201</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [AllocationPlan](/api-reference/schemas/allocation-plan/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="getAllocationPlans"></a>

## Get one multi-venue allocation plans aggregate

`GET /allocation-plans/{id}`

Operation ID: <code>getAllocationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Current immutable aggregate version | <code>application/json</code>: <code>object</code> |
| <code>404</code> | Not found | No response body declared |

**<code>200</code> response headers**

| Header | Required | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>ETag</code> | Yes | <code>string</code> | — |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [AllocationPlan](/api-reference/schemas/allocation-plan/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="listMigrationPlans"></a>

## List liquidity migration plans

`GET /migration-plans`

Operation ID: <code>listMigrationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>cursor</code> | query | No | <code>string</code> | Opaque cursor returned in the previous response metadata. |
| <code>limit</code> | query | No | <code>integer</code> | Default: <code>50</code>; Minimum: <code>1</code>; Maximum: <code>100</code> |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Latest tenant-isolated aggregate versions | <code>application/json</code>: <code>object</code> |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | Array of All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data&#91;&#93;.allOf&#91;2&#93;.payload</code> | Yes | [MigrationPlan](/api-reference/schemas/migration-plan/) | — |
| <code>meta</code> | Yes | <code>object</code> | Additional properties rejected |
| <code>meta.count</code> | Yes | <code>integer</code> | Minimum: <code>0</code> |
| <code>meta.hasMore</code> | Yes | <code>boolean</code> | — |
| <code>meta.nextCursor</code> | No | <code>string</code> | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="createMigrationPlans"></a>

## Create liquidity migration plans

`POST /migration-plans`

Operation ID: <code>createMigrationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |

### Request body

Required: **yes**.

**<code>application/json</code>**

[MigrationRequest](/api-reference/schemas/migration-request/)

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>201</code> | Append-only aggregate created | <code>application/json</code>: <code>object</code> |

**<code>201</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [MigrationPlan](/api-reference/schemas/migration-plan/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="getMigrationPlans"></a>

## Get one liquidity migration plans aggregate

`GET /migration-plans/{id}`

Operation ID: <code>getMigrationPlans</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Current immutable aggregate version | <code>application/json</code>: <code>object</code> |
| <code>404</code> | Not found | No response body declared |

**<code>200</code> response headers**

| Header | Required | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>ETag</code> | Yes | <code>string</code> | — |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | All of: [RecordEnvelope](/api-reference/schemas/record-envelope/); <code>object</code> | — |
| <code>data.allOf&#91;2&#93;.payload</code> | Yes | [MigrationPlan](/api-reference/schemas/migration-plan/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="queueVenueIndex"></a>

## Queue signed RPC quorum and finality indexing for one exact current venue-profile generation

`POST /venues/{id}/index-jobs`

Operation ID: <code>queueVenueIndex</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

The job binds the profile record version, resource version, artifact hash, identity, adapter, controller venue, and asset-pair facts. Only current VALIDATED or ACTIVE profiles are accepted.

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Request body

Required: **yes**.

**<code>application/json</code>**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>reason</code> | Yes | <code>string</code> | Min length: <code>3</code>; Max length: <code>500</code> |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>202</code> | Fenced generation-bound venue indexing job | <code>application/json</code>: <code>object</code> |
| <code>409</code> | Profile is draft, paused, revoked, superseded, or otherwise not currently eligible | No response body declared |

**<code>202</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | [OperatingSystemJob](/api-reference/schemas/operating-system-job/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="getMigrationPlanState"></a>

## Materialize ordered forward and rollback state from immutable transition evidence

`GET /migration-plans/{id}/state`

Operation ID: <code>getMigrationPlanState</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>200</code> | Deterministic migration execution state | <code>application/json</code>: <code>object</code> |
| <code>422</code> | Transition history fails closed | No response body declared |

**<code>200</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | [MigrationPlanStateResult](/api-reference/schemas/migration-plan-state-result/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.

<a id="appendMigrationPlanTransition"></a>

## Request a server-verified action-specific migration lifecycle transition

`POST /migration-plans/{id}/transitions`

Operation ID: <code>appendMigrationPlanTransition</code>

**Authentication:** <code>&#95;&#95;Host-klineo&#95;session</code> cookie (<code>sessionCookie</code>)

### Parameters

| Name | Location | Required | Type | Description and constraints |
| --- | --- | --- | --- | --- |
| <code>Idempotency-Key</code> | header | Yes | <code>string</code> | Min length: <code>8</code>; Max length: <code>160</code> |
| <code>x-klineo-organization-id</code> | header | Yes | <code>string</code> | — |
| <code>id</code> | path | Yes | <code>string</code> | — |
| <code>If-Match</code> | header | Yes | <code>string</code> | Pattern: <code>^"&#91;^"&#92;&#92; &#93;+"$</code> |

### Request body

Required: **yes**.

**<code>application/json</code>**

[MigrationTransitionRequest](/api-reference/schemas/migration-transition-request/)

### Responses

| Status | Description | Content type and schema |
| --- | --- | --- |
| <code>201</code> | Server-derived immutable transition and newly materialized state | <code>application/json</code>: <code>object</code> |
| <code>400</code> | Client attempted to supply authority-bearing evidence | No response body declared |
| <code>403</code> | Role has no migration execution authority | No response body declared |
| <code>409</code> | Preview plan, changed or revoked bound venue generation, or canonical gateway/Safe/finality/reconciliation evidence is unavailable | No response body declared |
| <code>412</code> | Plan or state precondition changed | No response body declared |
| <code>422</code> | Transition violates ordered finality/reconciliation rules | No response body declared |

**<code>201</code> <code>application/json</code> body**

<code>object</code> — Additional properties rejected

| Field | Required at this level | Type | Description and constraints |
| --- | --- | --- | --- |
| <code>data</code> | Yes | [MigrationTransitionResult](/api-reference/schemas/migration-transition-result/) | — |

Nested required fields apply when their parent object or matching union branch is present. Named types link to their complete schema.