# Tasks_GetTaskRevision `GET /v1/accounts/{account}/tasks/{task}/revisions/{revision}` Gets one revision. - 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. - `task` (path, string, required): The task id. - `revision` (path, string, required): The revision id. ## Responses - `200` OK: `application/json` `qualia.v1.TaskRevision` - `default` Default error response: `application/json` `google.rpc.Status` ## Schemas ```yaml qualia.v1.TaskRevision: type: object properties: name: type: string description: accounts/{account}/tasks/{task}/revisions/{revision} revision: readOnly: true type: integer description: 1, 2, 3, ... in publishing order. format: int32 displayName: readOnly: true type: string description: The task's display name when it was published. spec: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.TaskSpec" description: The specification, exactly as published. schemaVersion: readOnly: true type: integer description: |- The version of the TaskSpec schema it was written with. Readers reject a version they do not know rather than guess. format: int32 contentHash: readOnly: true type: string description: |- sha256 of the spec's canonical JSON: two revisions with one hash say the same thing, and a run can pin the content it read. note: readOnly: true type: string description: What changed, in the publisher's words. publisher: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.Actor" description: Who published it. createTime: readOnly: true type: string description: When it was published. format: date-time description: |- A published, immutable task specification. Episodes judged and evals scored against a task cite one of these, so results stay comparable: a revision never changes once written. qualia.v1.TaskSpec: type: object properties: description: type: string description: What the robot should do, in ordinary language. Required to publish. scene: type: string description: |- The scene the task runs in: the workspace, the objects that matter, how things start and what varies between episodes. steps: type: string description: |- The steps of the task in order, one per line, e.g. "pick a box from the tray". success: type: string description: |- How success shows: what has to be true, or seen happening, for an episode to succeed. Required to publish. failure: type: string description: |- How it fails: the ways the task goes wrong, and what looks like a failure but is fine. procedure: allOf: - $ref: "#/components/schemas/qualia.v1.Procedure" description: |- The task as a state machine of steps and transitions, beside the prose. Optional; when it has steps, publishing checks that it is well formed. description: |- What a task asks for, as five pieces of prose. Each is plain multi-line text of at most 20000 characters. Every field is optional while drafting; publishing needs `description` and `success`. An optional `procedure` lays the task out as a state machine beside the prose. qualia.v1.Procedure: type: object properties: steps: type: array items: $ref: "#/components/schemas/qualia.v1.Step" description: |- The steps. Step ids are the stable names judgments, subtask labels and progress report against. At most 64. transitions: type: array items: $ref: "#/components/schemas/qualia.v1.Transition" description: |- How steps follow each other, each from one step to another; nothing is implied. A failure outcome that can happen at several steps has a transition from each. At most 256. procedureSet: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.PersonSet" description: |- The signed-in person whose edit wrote these steps and transitions. Written only by the server, on any UpdateTask from such a person that changes them. An API key's change or a new proposal from preparation clears it. Unset on a draft, the step-order check reads uncertain instead of failing a take. It is left out of `content_hash`. description: |- The task as a state machine: where an attempt starts, the actions it takes and the outcomes it ends in. Optional, and a layer over the prose: the prose says what the task is, the procedure gives checks, subtask labels and progress stable names to report against. A procedure that has steps is checked when the task is published: one start step, at least one success outcome, every step reachable from the start, no step that leads nowhere, nothing after an outcome, no loops, and no task that contains itself. qualia.v1.Step: required: - id type: object properties: id: type: string description: |- Stable within the procedure, e.g. "place_box": given by the editor when the step is made and not changed after. 1 to 64 lowercase letters, digits or '_', starting with a letter. Unique within the procedure. kind: enum: - KIND_UNSPECIFIED - START - ACTION - SUCCESS - FAILURE - RECOVERY type: string description: What the step is. format: enum description: type: string description: |- The step in one line, as it observably holds: what an action or recovery gets done (e.g. "place the box upright on the shelf"), what an outcome looks like. At most 200 characters. Needed to publish, except on the start and on a step that stands for a task (`task`), which is named by the task. task: type: string description: |- An action that is a whole other task of the same account, accounts/{account}/tasks/{task}. In a draft it means that task's newest published revision; publishing pins it, so a revision's steps name accounts/{account}/tasks/{task}/revisions/{revision}. A task never contains itself, directly or through others. Such a step takes its name from the task and leaves `description` empty. minCount: type: integer description: |- The fewest times an action (or recovery) happens in a successful attempt: 0 or more; 0 makes it optional, e.g. a step only some attempts need. With both counts unset the step is not counted: checks report how often it happened and never flag it. Checks enforce a count only when `count_set` names the person who set it. format: int32 maxCount: type: integer description: |- The most times an action (or recovery) happens in a successful attempt, e.g. 4 box placements: 1 or more, and at least `min_count`. Unset is no limit. Exactly N is both N; up to N is `max_count` N alone. format: int32 triggers: type: array items: type: string description: |- What observably sets a recovery off ("When"), e.g. "the box slips in the gripper". Only a recovery has triggers, and it needs one to publish. At most 16, each 1 to 500 characters. stateChecks: type: array items: $ref: "#/components/schemas/qualia.v1.StateCheck" description: |- Conditions that observably hold at this step. At most 16; each needs text to publish and may also name a numeric condition. Not on START. bounds: type: array items: $ref: "#/components/schemas/qualia.v1.Bound" description: Metric limits for this step. At most 8. Not on START. countSet: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.PersonSet" description: |- The person who set `min_count` and `max_count` to their current values. Written only by the server, from UpdateTaskRequest.person_set; cleared when either count, the kind or `task` changes without it. Unset means the counts are not enforced, whatever they are. description: |- A state of the task: its start, an action, a recovery, or an outcome it ends in. qualia.v1.StateCheck: required: - text type: object properties: text: type: string description: What must hold, in 1 to 500 characters. Needed to publish. numeric: allOf: - $ref: "#/components/schemas/qualia.v1.NumericCondition" description: |- A numeric form of the condition, when it can be measured. Only a person writes one: it publishes only with `numeric_set`. numericSet: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.PersonSet" description: |- The person who set `numeric` to its current value. Written only by the server, from UpdateTaskRequest.person_set. It follows the numeric form within its step and is cleared when that form changes without it. description: An observable condition at a procedure step, optionally expressed as a number. qualia.v1.NumericCondition: required: - metric - op - value type: object properties: metric: type: string description: |- The metric name: 1 to 64 lowercase letters, digits, '_' or '.', starting with a letter. op: type: string description: "The comparison: lt, le, gt, ge, eq or between." value: type: number description: The comparison value, or the lower value for between. format: double valueHigh: type: number description: The upper value, greater than value. Set if and only if op is between. format: double description: A comparison against a measured metric. qualia.v1.PersonSet: type: object properties: actor: readOnly: true allOf: - $ref: "#/components/schemas/qualia.v1.Actor" description: |- The person, always kind PERSON, with `user` and `display_name` as at the time. setTime: readOnly: true type: string description: When they set it. format: date-time digest: readOnly: true type: string description: |- Lowercase hex sha256 of the value. For counts: "count::", each empty when unset. For a numeric condition: "numeric::::", numbers as Python repr(float), value_high empty when unset. For a procedure: "procedure:", keys sorted, without any stamp. description: |- A person's confirmation of one value: who, when, and a digest of the value confirmed. Written only by the server. It holds while the value's digest still matches. 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. qualia.v1.Bound: required: - metric type: object properties: metric: type: string description: |- The metric name: 1 to 64 lowercase letters, digits, '_' or '.', starting with a letter. min: type: number description: The lower limit. At least one of min and max is needed to publish. format: double max: type: number description: The upper limit, at least min when both are set. format: double description: Inclusive limits for a measured metric at a procedure step. qualia.v1.Transition: required: - source - target type: object properties: source: type: string description: The step it leaves, by id. target: type: string description: The step it enters, by id. description: A move from one step to another. 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. ```