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next-ai-draw-io/packages
caoxiaole07andcaoxiaole07 8d690503d4 feat(mcp): load_diagram accepts inline 'xml' content as an alternative to 'path' (#946)
Agents frequently hold .drawio content in memory (another tool's output,
a repository read, an API response) and previously had to write it to a
temporary file just so load_diagram could read it back. Add a mutually
exclusive 'xml' argument that goes through the same parser as the 'path'
branch, so both plain XML and draw.io's compressed save format work.

Edit-gate semantics by source:
- 'path': unchanged — the model has not seen the content, one
  get_diagram round-trip is still required before editing.
- plain 'xml': the model supplied the exact content (same rationale as
  create_new_diagram), so it is recorded as seen and can be edited
  immediately.
- compressed 'xml': the session stores the decompressed form, which the
  model cannot derive from the compressed input — the gate is kept.

Argument validation (mutual exclusion / presence) fires before the
session check so callers get useful errors regardless of session state.
parseDrawioFileContent now reports whether any page was decompressed,
which drives the gate decision. The diagram-workflow prompt is updated
to document the new argument.

Co-authored-by: caoxiaole07 <[email protected]>
2026-10-11 10:03:13 +09:00
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