workflow.json

{
  "package_format": "tin-workflow-package-v1",
  "definition": {
    "key": "example.csv_summary",
    "title": "Summarize a CSV",
    "description": "Validate an amount_cents column, count the rows and total their values. No model calls.",
    "version": "1.0.0",
    "executor": "workflow.code",
    "schedule_modes": ["on_demand"],
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "project_id": {"type": "string", "format": "uuid"},
        "csv_text": {"type": "string", "minLength": 1, "maxLength": 16000, "title": "CSV with an amount_cents column"}
      },
      "required": ["project_id", "csv_text"]
    },
    "code": {
      "runtime": "python3.12.8-stdlib-v1",
      "entrypoint": "main.py",
      "files": ["main.py"],
      "timeout_seconds": 10,
      "output": {
        "kind": "project.artifact",
        "path": "reports/CSV_SUMMARY.md",
        "media_type": "text/markdown",
        "max_bytes": 2000
      }
    },
    "presentation": {
      "flow": {
        "direction": "TD",
        "nodes": [
          {"id": "read", "kind": "step", "label": "Read the CSV", "fact": "unique columns, including amount_cents"},
          {"id": "check", "kind": "step", "label": "Check every row", "fact": "whole cents, at most 10 digits"},
          {"id": "report", "kind": "receipt", "label": "Summary in Files", "fact": "reports/CSV_SUMMARY.md, rows and total"}
        ],
        "edges": [
          {"from": "read", "to": "check", "kind": "call"},
          {"from": "check", "to": "report", "kind": "call"}
        ]
      }
    }
  }
}