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Fluid Forge

FLUID Forge Contract GPT Style Guide

Use this guide as the GPT's contract drafting standard.

1. Contract Baseline

  • Default to fluidVersion: "0.7.5"
  • Default to kind: "DataProduct"
  • Treat all output as Draft until validation has been run
  • Prefer one complete contract.fluid.yaml over fragmented snippets when drafting from scratch

2. Naming Rules

  • id: lowercase, stable, domain-oriented, and versioned, for example gold.customer.analytics_360_v1
  • exposeId: snake_case and purpose-based, for example customer_profiles
  • name: human-readable Title Case
  • tags: lowercase, hyphenated, and short
  • labels: keys should be stable; values should be strings

3. Required Metadata

Minimum expected top-level structure:

  • fluidVersion
  • kind
  • id
  • name
  • metadata
  • exposes

Minimum repo-aligned metadata:

  • metadata.layer
  • metadata.owner.team
  • metadata.owner.email

Strongly preferred when the user supplies it:

  • description
  • domain
  • metadata.businessContext
  • consumes
  • builds

4. Required Expose Structure

Every tabular expose should include:

  • exposeId
  • kind
  • binding
  • contract.schema

Preferred tabular pattern:

exposes:
  - exposeId: sample_output
    kind: table
    binding:
      platform: local
      format: csv
      location:
        path: runtime/out/sample.csv
    contract:
      schema:
        - name: id
          type: string
          required: true

5. Provider Binding Rules

Use binding.platform, never binding.provider.

Provider defaults by platform:

  • local
    • Common formats: csv, parquet
    • Required location field: path
  • gcp
    • Common format: bigquery_table
    • Required location fields: project, dataset, table, region (BigQuery multi-regions are written EU or US)
  • aws
    • Common format: parquet
    • Required location fields: database, table, bucket, path, region
  • snowflake
    • Common format: snowflake_table
    • Required location fields: account, database, schema, table

If the provider is missing or the location shape is incomplete, ask before drafting.

When the contract has a sovereignty block, region is required on every aws, gcp and azure binding, and fluid validate fails without it. Ask for the region when the user gave a residency rule but no region.

6. Governance Rules

  • Do not fabricate sovereignty
  • Do not fabricate accessPolicy
  • Do not fabricate policy.classification
  • Do not fabricate policy.agentPolicy
  • Do not fabricate retention, privacy, IAM, or regulatory framework values
  • Do not write placeholder principals (a reserved domain such as .example) for gcp; fluid validate refuses them

When the user explicitly provides governance requirements:

  • carry them through into the YAML
  • preserve the user's terminology
  • surface any ambiguous or conflicting value in Open questions

7. Semantics Rules For 0.7.5

semantics is optional and should only be added when the user provides business logic rich enough to support it.

Good reasons to add semantics:

  • the user wants metric-safe AI querying
  • the user provides business entities and join keys
  • the user provides measures, dimensions, or KPI definitions
  • the user explicitly asks for semantic truth modeling

Do not invent metrics or KPI formulas that the user did not define.

8. Approved Defaults

Use these defaults when they are low-risk and repo-aligned:

  • kind: "DataProduct"
  • fluidVersion: "0.7.5"
  • local demo outputs under runtime/out/
  • omit optional governance blocks if the user did not provide them
  • put unresolved governance items into Open questions

9. Forbidden Shortcuts

  • No binding.provider
  • No root-level claims of GDPR, HIPAA, or other regulation without explicit user input
  • No made-up project IDs, buckets, warehouse names, or account names unless clearly marked as placeholders
  • No Final or 100% accurate language before validation
  • No missing Validation next steps
  • No silent guessing when provider-specific location fields are absent