Public API v1: programmatic deck generation

Pitchko now has a public REST API. Generate pitch decks from your own tools — CRMs, internal dashboards, partner integrations — with a single authenticated request.

• API keys are issued per agency from Settings → API Keys, with scoped permissions and instant revocation.
• Sandbox mode lets you integrate end-to-end without spending deck credits — sandbox decks are watermarked and free.
• Deck status polling via GET /v1/decks/:id returns snake_case JSON with a stable, versioned wire shape.

All v1 responses go through additive DTOs: fields are published deliberately, never leaked from internal types.