Replicate Resolve Latest Version and Predict

arazzo: 1.0.1
info:
  title: Replicate Resolve Latest Version and Predict
  summary: Look up a model, pick its latest version, run a prediction, and poll to completion.
  description: >-
    Resolves a model by owner and name, lists its versions to select the most
    recent one, then creates a prediction against that exact version and polls
    the prediction until it reaches a terminal state. This avoids hardcoding a
    version ID and always runs the freshest published version. Every step spells
    out its request inline so the flow can be read and executed without opening
    the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: replicateApi
  url: ../openapi/replicate-openapi.yml
  type: openapi
workflows:
- workflowId: resolve-version-and-predict
  summary: Resolve a model's latest version and run a prediction against it.
  description: >-
    Reads the model object, lists its versions to grab the most recent version
    ID, submits a prediction for that version, and polls the prediction until it
    succeeds, fails, or is canceled.
  inputs:
    type: object
    required:
    - apiToken
    - modelOwner
    - modelName
    - input
    properties:
      apiToken:
        type: string
        description: Replicate API token used as a Bearer credential.
      modelOwner:
        type: string
        description: The name of the user or organization that owns the model.
      modelName:
        type: string
        description: The name of the model.
      input:
        type: object
        description: The model's input as a JSON object matching the version's input schema.
  steps:
  - stepId: getModel
    description: >-
      Read the model object to confirm it exists and capture its latest version
      reference before listing versions.
    operationId: models.get
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    - name: model_owner
      in: path
      value: $inputs.modelOwner
    - name: model_name
      in: path
      value: $inputs.modelName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      modelName: $response.body#/name
      latestVersionId: $response.body#/latest_version/id
  - stepId: listVersions
    description: >-
      List the model's versions, which are returned most recent first, and
      capture the newest version ID to run.
    operationId: models.versions.list
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    - name: model_owner
      in: path
      value: $inputs.modelOwner
    - name: model_name
      in: path
      value: $inputs.modelName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      versionId: $response.body#/results/0/id
  - stepId: createPrediction
    description: >-
      Create a prediction for the resolved version and supplied input. The
      prediction is returned in a starting state to be polled.
    operationId: predictions.create
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    requestBody:
      contentType: application/json
      payload:
        version: $steps.listVersions.outputs.versionId
        input: $inputs.input
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      predictionId: $response.body#/id
  - stepId: getPrediction
    description: >-
      Retrieve the prediction state, repeating via the retry branch until the
      prediction reaches a terminal status.
    operationId: predictions.get
    parameters:
    - name: Authorization
      in: header
      value: Bearer $inputs.apiToken
    - name: prediction_id
      in: path
      value: $steps.createPrediction.outputs.predictionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      status: $response.body#/status
      output: $response.body#/output
      error: $response.body#/error
    onSuccess:
    - name: predictionDone
      type: end
      criteria:
      - context: $response.body
        condition: $.status == "succeeded" || $.status == "failed" || $.status == "canceled"
        type: jsonpath
    - name: keepPolling
      type: retry
      retryAfter: 2
      retryLimit: 60
      stepId: getPrediction
      criteria:
      - context: $response.body
        condition: $.status == "starting" || $.status == "processing"
        type: jsonpath
  outputs:
    versionId: $steps.listVersions.outputs.versionId
    predictionId: $steps.createPrediction.outputs.predictionId
    status: $steps.getPrediction.outputs.status
    output: $steps.getPrediction.outputs.output
    error: $steps.getPrediction.outputs.error