Integration Creator

Use this skill when working inside lemma-connectors to add or regenerate a provider package from an OpenAPI spec.

What this skill is for

• generating typed transport clients from OpenAPI specs
• generating canonical provider schema models
• generating typed tool input/output models
• generating operation/resource modules
• keeping operation names logical and agent-friendly
• preserving typed binary/file results
• validating that the package imports and discovery surface are solid

Required package shape

Each app package should contain:

• client.py
• generated/client/
• generated/pydantic_models.py
• generated/pydantic_model_registry.json
• generated/openapi_metadata.json
• generated/tool_types.py
• resources/__init__.py
• resources/<resource>.py

Operation coverage should be near-full for the in-scope provider API surface.

Generator contract

• Tool names stay explicit and provider-level.
• Operation names come from cleaned provider operationId values, not raw path ancestry.
• Resource files group related operations together.
• Tool and operation input/output models must be real typed Pydantic models.
• Binary or file-like endpoints must surface BinaryContentResult, not placeholder dict[str, object] wrappers.
• Preserve provider wire-format strings when the API uses url-safe/base64-like encodings that should not be eagerly decoded by Pydantic, such as Gmail message body data and raw MIME payloads.
• Descriptions should help an agent choose and use the operation.

Quality rules

• Prefer fixing the generator once over hand-editing many generated files.
• Do not keep awkward names like users_messages_list when the provider intent is clearly messages_list.
• Do not include low-value text like "backed by this tool".
• Preserve useful provider field descriptions on generated models.
• Keep Slack admin endpoints excluded.
• Expect Jira and similarly large specs to need extra validation and occasional provider-specific post-processing patches.
• Generated runtime execution must handle reserved-identifier parameters cleanly, for example mapping a public format field onto generated client parameters like format_.

Workflow

Use the exact commands and validation checklist in references/workflow.md.

Done bar

Before considering the work complete:

• the app package imports successfully
• info client discovery works
• operation names are sensible
• output schemas are real typed schemas
• binary/file endpoints expose BinaryContentResult
• tests and compile checks pass