## What / why
The workflow agent tools let an AI **write** a CODE step's logic
function (`update_logic_function_source`) and **list** logic functions
(`list_logic_function_tools`), but there is no tool to **read** an
existing function's source.
That's fine for greenfield generation — the agent already has in context
whatever code it just wrote. But it's a real gap when editing a function
the agent did **not** author: to safely modify an existing CODE step it
has to see the current source first, and today the only ways to get it
are the frontend (`getLogicFunctionSourceCode` query) or the DB. So the
agent is forced to either guess or ask a human to paste the code.
This adds a small read tool that closes the loop, mirroring the existing
`update_logic_function_source` tool.
## How
- New `get_logic_function_source` tool that calls the existing
`LogicFunctionFromSourceService.getSourceCode({ id, workspaceId })` —
the same service method backing the `getLogicFunctionSourceCode` GraphQL
resolver the frontend already uses. No new service logic.
- Registered in `workflow-tool.workspace-service.ts` alongside
`update_logic_function_source` (the dependency
`logicFunctionFromSourceService` is already injected).
- Unit test covering the success and error paths, matching the `get-*`
tool test convention.
## Notes
- Read-only, additive; no schema or API changes.
- Naturally pairs with `update_logic_function_source`: read → edit →
write.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Joshua Freedman
9f75506896
