# Versions_GetMergeHistory

`GET /v1/accounts/{account}/datasets/{dataset}/mergeHistory`

Reads the merge and revert events for one dataset, newest first. A merge
is final: the reverts recorded before then are history, and
no entry can be reverted now.

- Base URL: `https://junction-api.qualiastudios.dev`
- Authentication: an API key in the `X-API-Key` header

## Parameters

- `account` (path, string, required): The account id.
- `dataset` (path, string, required): The dataset id.

## Responses

- `200` OK: `application/json` `qualia.v1.MergeHistory`
- `default` Default error response: `application/json` `google.rpc.Status`

## Schemas

```yaml
qualia.v1.MergeHistory:
  type: object
  properties:
    name:
      type: string
      description: accounts/{account}/datasets/{dataset}/mergeHistory
    entries:
      readOnly: true
      type: array
      items:
        $ref: "#/components/schemas/qualia.v1.MergeHistoryEntry"
      description: Merge and revert events, newest first.
  description: The merge and revert history of a dataset.
qualia.v1.MergeHistoryEntry:
  type: object
  properties:
    event:
      type: string
      description: The merge or revert event in the dataset event stream.
    kind:
      type: string
      description: DATASETS_MERGED or EVENT_REVERTED.
    actor:
      allOf:
        - $ref: "#/components/schemas/qualia.v1.Actor"
      description: User, agent or system identity that made the change.
    createTime:
      type: string
      description: RFC 3339 event time.
      format: date-time
    datasets:
      type: array
      items:
        type: string
      description: Uploads joined by this merge, or released by its revert.
    revertedEvent:
      type: string
      description: For EVENT_REVERTED, the DATASETS_MERGED event it reverses.
    reverted:
      type: boolean
      description: For DATASETS_MERGED, true after a revert event was recorded.
    canRevert:
      type: boolean
      description: |-
        For DATASETS_MERGED, whether RevertMerge can reverse this entry: always
        false since merges are final.
    appended:
      type: boolean
      description: True when the merge appended to an existing merged dataset.
  description: The merge or revert event in the dataset event stream.
qualia.v1.Actor:
  type: object
  properties:
    kind:
      readOnly: true
      enum:
        - KIND_UNSPECIFIED
        - PERSON
        - VALIDATION
        - RULE
        - MODEL
        - OPERATOR
        - SYSTEM
      type: string
      description: What kind of actor it is.
      format: enum
    user:
      readOnly: true
      type: string
      description: The person's user id when `kind` is PERSON; empty otherwise.
    displayName:
      readOnly: true
      type: string
      description: The person's display name at the time, for rendering without a lookup.
    agent:
      readOnly: true
      type: string
      description: |-
        The rule code, or for a MODEL the Qualia model tier (e.g. "qualia-vlm";
        "qualia" for any other model), when not a person.
    run:
      readOnly: true
      type: string
      description: The run a model or rule finding came from, when it has one.
    apiKey:
      readOnly: true
      type: string
      description: |-
        The API key's id when a person acted through one; empty for a session.
        Never the key itself.
    attribution:
      readOnly: true
      allOf:
        - $ref: "#/components/schemas/qualia.v1.Attribution"
      description: |-
        Signed identity evidence recorded with the change, kept apart from the
        principal above. Unset on older records and wherever none was signed.
  description: Who did something. Every decision, issue and reply names one.
qualia.v1.Attribution:
  type: object
  properties:
    authentication:
      readOnly: true
      enum:
        - AUTHENTICATION_UNSPECIFIED
        - SESSION
        - API_KEY
        - SERVICE
      type: string
      description: How the principal authenticated.
      format: enum
    initiator:
      readOnly: true
      type: string
      description: |-
        The user id of a person verified as starting the work: the person of a
        session, or the person a trusted service's signed job record names.
        Empty when nobody was verified.
    initiatorDisplayName:
      readOnly: true
      type: string
      description: The initiator's display name at the time, never their email.
    credentialCreator:
      readOnly: true
      type: string
      description: The user id of the key's creator at the time. Not who used the key.
    credentialOwner:
      readOnly: true
      enum:
        - CREDENTIAL_OWNER_UNSPECIFIED
        - PERSON
        - SPACE
      type: string
      description: Who owned the key at the time.
      format: enum
    credentialOwnerSpace:
      readOnly: true
      type: string
      description: |-
        The owning space's id (a workspace or the organization) when
        `credential_owner` is SPACE.
  description: |-
    How a change was authenticated and who verifiably started it.
    Only the trusted mesh signs it. It never authorizes anything, and a key's
    creator or owner is never the person who used the key.
google.rpc.Status:
  oneOf:
    - $ref: "#/components/schemas/ApiError"
    - $ref: "#/components/schemas/GatewayError"
  description: "The body of a failed call: one of the two shapes below."
ApiError:
  title: API error
  type: object
  required:
    - code
    - message
    - retryable
    - details
  properties:
    code:
      type: string
      description: The gRPC code name in upper case, e.g. `NOT_FOUND`.
    message:
      type: string
    retryable:
      type: boolean
      description: Whether the same call may succeed if retried.
    details:
      type: array
      items:
        type: object
      description: "Empty, except when a dataset copy or move is refused: then one `google.rpc.ErrorInfo` with the refusal's `reason` code, its `domain` and, in `metadata`, the datasets it names."
  description: A refusal from the API itself.
GatewayError:
  title: Gateway error
  type: object
  required:
    - detail
  properties:
    detail:
      type: string
      description: What went wrong.
  description: A refusal from the gateway before the call reaches the API, for example `401` bad or missing API key, `403` key lacks the scope or environment closed, `413` body too large.
```