fix: Add schema-aware numeric coercion for MCP tool arguments#5478
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tlongwell-block merged 2 commits intomainfrom Nov 5, 2025
Merged
fix: Add schema-aware numeric coercion for MCP tool arguments#5478tlongwell-block merged 2 commits intomainfrom
tlongwell-block merged 2 commits intomainfrom
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DOsinga
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Oct 30, 2025
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this is definitely an improvement, but I think it should live somewhere else
crates/goose/src/agents/agent.rs
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| return; | ||
| }; | ||
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| let tools = self.list_tools(None).await; |
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we're looking only for one tool, list_tools will actually go and call all mcp servers to ask for their tools - that could be rather expensive! now that I say that, I worry that we are doing this willy-nilly anyway
still though, I think we should move this code to the place where we actually get the toolrequests, in categorize_tools - which I see already has a list of tools (unused!)
crates/goose/src/agents/agent.rs
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| if should_be_number { | ||
| if let Ok(n) = s.parse::<f64>() { | ||
| // Preserve integer types when possible |
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json doesn't have a distinction between integers and floats, so this is all a bit of a no-op
we should consider to do the same for booleans maybe?
crates/goose/src/agents/agent.rs
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| cancellation_token: Option<CancellationToken>, | ||
| session: Option<SessionConfig>, | ||
| ) -> (String, Result<ToolCallResult, ErrorData>) { | ||
| self.coerce_numeric_arguments(&mut tool_call).await; |
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I don't think you want to do this in a mutable way - just make it functional
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…est-and-fix * 'main' of github.com:block/goose: Document missing recipe param types (#5584) docs: description required for "Add Extension" in cli (#5573) fix: Add schema-aware numeric coercion for MCP tool arguments (#5478) Add uv for uvx in Justfile (#5581) Keep llm logs in place (#5577) bump to 1.12.0 (#5580) automate more of the release process (#5409) add clippy warning for string_slice (#5422)
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* main: (41 commits) Add pending extension indicator to extension panel (#5493) Add environment subsition for auth blocks (#5439) acp: ToolCallLocations and working cancellation (#5588) feat(providers): add Mistral AI provider (#5009) Listen for ctrl-c during provider request (#5585) Also accept null as description, not just missing (#5589) Document missing recipe param types (#5584) docs: description required for "Add Extension" in cli (#5573) fix: Add schema-aware numeric coercion for MCP tool arguments (#5478) Add uv for uvx in Justfile (#5581) Keep llm logs in place (#5577) bump to 1.12.0 (#5580) automate more of the release process (#5409) add clippy warning for string_slice (#5422) improve linux tray icon support (#5425) feat: log rotation (#5561) use app.isPackaged instead of checking for node env development (#5465) disable RPM build-ID generation to prevent package conflicts (#5563) Add Diagnostics Info to Q&A and Bug Report Templates (#5565) fix: improve server error messages to include HTTP status code (#5532) ...
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* main: (53 commits) acp: ToolCallLocations and working cancellation (#5588) feat(providers): add Mistral AI provider (#5009) Listen for ctrl-c during provider request (#5585) Also accept null as description, not just missing (#5589) Document missing recipe param types (#5584) docs: description required for "Add Extension" in cli (#5573) fix: Add schema-aware numeric coercion for MCP tool arguments (#5478) Add uv for uvx in Justfile (#5581) Keep llm logs in place (#5577) bump to 1.12.0 (#5580) automate more of the release process (#5409) add clippy warning for string_slice (#5422) improve linux tray icon support (#5425) feat: log rotation (#5561) use app.isPackaged instead of checking for node env development (#5465) disable RPM build-ID generation to prevent package conflicts (#5563) Add Diagnostics Info to Q&A and Bug Report Templates (#5565) fix: improve server error messages to include HTTP status code (#5532) improvement: add useful error message when attempting to use unauthenticated cursor-agent (#5300) fix: unblock acp via databricks (#5562) ...
lifeizhou-ap
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* main: fix: customised recipe to yaml string to avoid minininjia parsing error (#5494) Add pending extension indicator to extension panel (#5493) Add environment subsition for auth blocks (#5439) acp: ToolCallLocations and working cancellation (#5588) feat(providers): add Mistral AI provider (#5009) Listen for ctrl-c during provider request (#5585) Also accept null as description, not just missing (#5589) Document missing recipe param types (#5584) docs: description required for "Add Extension" in cli (#5573) fix: Add schema-aware numeric coercion for MCP tool arguments (#5478) Add uv for uvx in Justfile (#5581) Keep llm logs in place (#5577) bump to 1.12.0 (#5580) automate more of the release process (#5409)
aharvard
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* origin/main: (75 commits) fix: customised recipe to yaml string to avoid minininjia parsing error (#5494) Add pending extension indicator to extension panel (#5493) Add environment subsition for auth blocks (#5439) acp: ToolCallLocations and working cancellation (#5588) feat(providers): add Mistral AI provider (#5009) Listen for ctrl-c during provider request (#5585) Also accept null as description, not just missing (#5589) Document missing recipe param types (#5584) docs: description required for "Add Extension" in cli (#5573) fix: Add schema-aware numeric coercion for MCP tool arguments (#5478) Add uv for uvx in Justfile (#5581) Keep llm logs in place (#5577) bump to 1.12.0 (#5580) automate more of the release process (#5409) add clippy warning for string_slice (#5422) improve linux tray icon support (#5425) feat: log rotation (#5561) use app.isPackaged instead of checking for node env development (#5465) disable RPM build-ID generation to prevent package conflicts (#5563) Add Diagnostics Info to Q&A and Bug Report Templates (#5565) ...
fbalicchia
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…5478) Signed-off-by: fbalicchia <[email protected]>
BlairAllan
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Nov 29, 2025
…5478) Signed-off-by: Blair Allan <[email protected]>
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Some LLMs quote numeric arguments when calling MCP tools (e.g., sending
"42"instead of42), which can cause tool execution failures. This change adds schema-aware coercion that automatically converts string representations of numbers to their proper numeric types, but only when the tool's schema explicitly indicates a parameter should be numeric. The implementation is conservative - if no schema is available, no coercion is performed to avoid accidentally modifying strings that should remain as strings.