rust(feat): user defined function MCP tools - #739
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Looking good mostly, I think the one issue to be fixed is with the user_notes being potentially overwritten with empty values.
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…e names like the backend
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Co-authored-by: Liam Neville <liam@siftstack.com>
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Description
Adds a
user_defined_functionsdomain to the MCP server.Tool surface:
list_user_defined_functions,list_user_defined_function_versions,create_user_defined_function,update_user_defined_function,archive_user_defined_function,unarchive_user_defined_function.Function inputs ride in
function_inputs_json, a documented JSON string parameter. Updates are mask-only and create a new version; anamechange applies alone per the API's semantics, so the tool rejectsnamecombined with other fields.Surface note: there is no dedicated archive RPC. The public API archives a user-defined function by setting the archive field through the update mask.
archive_user_defined_functionandunarchive_user_defined_functionare exposed as separate tools anyway, so an agent does not have to know that, and so each can carry a destructive write gate.The list tools carry the crate's
fieldsprojection and reportcount/has_more.Stack note: the bundled agent skill and the 0.5.0 changelog for this whole stack land at the tip (#763).
Verification
cargo test -p sift_mcpon this branch: 411 passed, 0 failed (pagination, mask construction, no stale version echo, archive/unarchive shape, write gates, input validation, fields projection and count).