Handle McpError
from MCP tool calls
#1999
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
✨ Summary
Fixes #1989 – runtime errors raised by the MCP backend now surface as ModelRetry, allowing the caller’s retry logic to work correctly.
Additional improvements bundled into the same patch:
1. Export hygiene – replace the accidental string‐literal all with a tuple so IDEs and static analysers discover the five public server classes.
2. Type-annotation & formatting clean-ups – wrap long generics/context-manager signatures to the Black default line length for readability.