Apps, tools, and MCP

Workrun brings code projects and the Agent tool ecosystem into the same workflow. Each has a different job.

Capability	Called by	Best for
Process App	A workflow node	Data processing, integrations, and deterministic business rules
Tool App	An Agent	Queries, calculations, or actions with JSON Schema parameters
MCP server	An Agent	Existing local or remote tool ecosystems
Skill	An Agent	Progressively loaded task guidance and a constrained tool set

Every Python App is an editable local uv project with its own pyproject.toml, lockfile, virtual environment, and entry script. A Process App returns its result with workrun_sdk.process.result(...).

MCP servers support local stdio and remote Streamable HTTP. Remote services can use no authentication, a Bearer token, or OAuth; credentials are encrypted and stored only on the local machine.

Local Apps are not sandboxes. Run only code you trust and review it according to the permissions it actually has.