Nim — 124 Operations for AI Agents

This page is the canonical reference an AI coding agent uses to refactor, query, and analyze Nim code through the act MCP server. 124 operations available: 50 refactor, 18 query, 42 analysis, 14 verification. Each operation is callable from Claude Code, Cursor, Codex, OpenCode, or any MCP-compatible agent host. Click any operation for a stable anchor link suitable for citation.

18Query

50Refactor

42Analysis

14Verify

Query

18 query tools, the same on every supported language. Descriptions live in the shared reference: /docs/query-tools.

callers control_flow data_flow definition diagnostics effect_closure effect_summary fix_auto get_type graph import_organize interface mutations references repo_outline skeleton symbols symbols_batch

Refactor

Operation	Description
`add-guard-clause-nim`	Add early-return guard clause to procedure
`add-missing-import-nim`	Add missing import for referenced symbol
`add-pragma-nim`	Add compiler pragma to declaration
`add-type-annotation-nim`	Add explicit type annotation to variable or parameter
`add-visibility-modifier-nim`	Add export marker to declaration
`consolidate-import-statements-nim`	Merge multiple imports from same module
`convert-case-to-if-nim`	Convert case statement to if/elif chain
`convert-exception-to-result-nim`	Convert exception-based error to Result type
`convert-if-to-case-nim`	Convert if/elif chain to case statement
`convert-iterator-to-loop-nim`	Convert iterator to explicit loop
`convert-let-to-var-nim`	Convert immutable variable to mutable
`convert-loop-to-iterator-nim`	Convert loop to iterator expression
`convert-proc-to-func`	Convert proc to func (pure function)
`convert-to-defer-nim`	Convert finally block to defer statement
`convert-to-string-interpolation-nim`	Convert string concatenation to interpolation
`convert-var-to-let-nim`	Convert mutable to immutable variable
`extract-procedure-nim`	Extract code into new procedure
`extract-variable-nim`	Extract expression to variable
`extract_function`	Extract a code selection into a new function — automatically infers parameters, return types, and inserts the call site. Use instead of manually cutting/pasting code. Works without LSP; LSP improves type inference. Params: file (string), new_name (string), start_line (u32), start_column (u32), end_line (u32), end_column (u32) [, preview (bool), receipt (bool)]
`extract_variable`	Extract an expression into a named variable — inserts the declaration and replaces the expression with the variable name. Works without LSP. Params: file (string), new_name (string), start_line (u32), start_column (u32), end_line (u32), end_column (u32) [, preview (bool)]
`generate-concept-definition-nim`	Generate concept (type constraint) for generics
`generate-constructor-nim`	Generate object constructor
`generate-enum-member-nim`	Generate enum value with auto-numbering
`generate-equality-operator-nim`	Generate == operator for object comparison
`generate-field-accessor-nim`	Generate getter/setter for field
`generate-module-implementation-nim`	Generate implementation stubs from signature
`generate-null-check-nim`	Generate nil-safety check for reference
`generate-range-check-nim`	Generate bounds check for array/seq access
`generate-readonly-property-nim`	Generate read-only getter for field
`generate-to-string-method-nim`	Generate $ string representation method
`generate-unittest-scaffold-nim`	Generate unittest block template
`inline`	Inline a variable, function, or method — replace every usage with its definition body, then remove the original. The inverse of extract. Works without LSP (single-file); LSP enables cross-file inlining. Params: file (string), symbol (string) [, line (u32), preview (bool), receipt (bool)]
`inline-function-nim`	Replace function call with function body
`inline-variable-nim`	Replace variable with its value
`insert_body`	Replace a function's implementation body with new code. AST-validated — rejects if the result has parse errors, so you can't accidentally break syntax. Use instead of manual text editing for function rewrites. Params: file (string), symbol (string), code (string) [, commit (bool)]
`introduce-constant-nim`	Extract constant value into module-level const
`introduce-parameter-nim`	Convert local variable to procedure parameter
`introduce-variable-nim`	Extract expression to named variable
`invert-conditional-nim`	Invert condition and swap if/else branches
`move-to-new-module-nim`	Extract procedure/type into new module
`move_symbol`	Move a function, class, or type to a different file and automatically update all imports across the codebase. Use instead of manually cut/paste + fixing imports. Works without LSP (single-file); LSP enables cross-file import updates. Params: file (string), symbol (string), destination (string) [, preview (bool), receipt (bool)]
`organize-imports-nim`	Sort import statements alphabetically
`qualify-name-with-module-nim`	Add module prefix to symbol reference
`recipe_run`	Run a codemod recipe: declarative match → transform → optional verify across modeled grammars. Preview lists matches; apply writes with optional E7 receipts and all-or-nothing rollback. Returns a per-site report.
`remove-unused-import-nim`	Remove import statement with no references
`remove-unused-variable-nim`	Remove variable declaration with no references
`rename`	Rename a symbol and automatically update ALL references across the codebase. Safer and faster than find-and-replace — AST-aware, won't rename strings or comments. Works without LSP (single-file); LSP enables cross-file renames. Params: file (string), old_name (string), new_name (string) [, line (u32), column (u32), preview (bool), receipt (bool)]
`rename-identifier-nim`	Rename symbol and all references
`simplify-boolean-expression-nim`	Simplify redundant boolean logic
`simplify-string-concatenation-nim`	Consolidate string concatenation

Analysis

42 analysis tools, the same on every supported language. Descriptions live in the shared reference: /docs/analysis-tools.

analyze_api_diff analyze_chokepoints analyze_clones analyze_clusters analyze_cohesion analyze_conformance analyze_coupling analyze_cycle_risk analyze_cycles analyze_dead_code analyze_depth analyze_entry_points analyze_export analyze_extraction analyze_fan_balance analyze_features analyze_hotspots analyze_impact analyze_inconsistencies analyze_inheritance analyze_interface_bloat analyze_interfaces analyze_layers analyze_orphan_types analyze_patterns analyze_platform_deps analyze_readiness analyze_roles analyze_seams analyze_stability analyze_surface analyze_test_gaps analyze_thickness analyze_type_completeness churn_hotspots co_change_clusters coverage_overlay ownership_map profile_overlay simulate split_module trace_overlay

Verify

14 verify tools, the same on every supported language. Descriptions live in the shared reference: /docs/verification.

bisect_regression gate generate_test_harness scan secret_surface summarize_pr taint_flow unsafe_surface verify_behavioral_equivalence verify_contract_preserved verify_diff_semantics verify_port_parity verify_side_effects verify_test_impact

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