List available AI models with capabilities and pricing. Use to check valid model IDs before testing. Cost shows provider pricing (OpenAI/Anthropic) - RelayPlane is BYOK, we don't charge for API usage.

Execute a single AI model call. Useful for testing prompts before building full workflows. Returns output, token usage, estimated provider cost, and trace URL. Note: Cost tracks your provider bill (OpenAI/Anthropic), not RelayPlane fees - we're BYOK.

Execute a multi-step AI workflow. Intermediate results stay in the workflow engine (not your context), providing 90%+ context reduction on complex pipelines. Use for any task requiring multiple model calls or tool integrations. Cost tracks your provider bills, not RelayPlane fees - we're BYOK.

Validate workflow structure without making any LLM calls (free). Checks DAG structure (no cycles), dependency references, and model ID format. Does NOT validate schema compatibility between steps or prompt effectiveness - use relay_workflow_run for full validation.

List available pre-built workflow skills. Skills are reusable patterns for common tasks (invoice processing, content pipelines, etc.). Returns skill names, descriptions, context reduction metrics, and usage examples.

List recent workflow runs for debugging and reference.

Get full details of a specific run including all step outputs and trace URL.