Ada — 131 Operations for AI Agents

This page is the canonical reference an AI coding agent uses to refactor, query, and analyze Ada code through the act MCP server. 131 operations available: 57 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.

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18Query

57Refactor

42Analysis

14Verify

Worked Ada examples

act101 works with Ada's parameter modes and subprogram forms directly. It can add an in/out/in out mode to a parameter that never had one. The other two examples show a function converted to procedure form on a single standalone file and an if/elsif chain converted to a case statement, each as the verbatim output of the command shown, run against the file shown.

Add an out mode to a parameter

Write_Value's Result parameter has no mode yet, so it defaults to in even though the procedure only ever assigns to it.

$ act refactor-lang add_mode_to_parameter --file process.adb --params '{"procedure_name":"Write_Value","param_name":"Result","mode":"out","line":1,"column":1}'

Before

procedure Process is
   procedure Write_Value (Result : Integer) is
   begin
      null;
   end Write_Value;
begin
   null;
end Process;

After

procedure Process is
   procedure Write_Value (Result : out Integer) is
   begin
      null;
   end Write_Value;
begin
   null;
end Process;

The parameter declaration gains out, making the procedure's intent — that Result is written, not read — explicit in the signature.

Convert a function to a procedure with an out parameter

Compute_Sum returns its result through a function return; this edit converts the declaration to the caller-supplied out-parameter style, on this standalone file.

$ act refactor-lang convert_function_to_procedure --file compute_sum.adb --params '{"function_name":"Compute_Sum","out_param_name":"Sum","line":1,"column":1}'

Before

function Compute_Sum (A : Integer; B : Integer) return Integer is
begin
   return A + B;
end Compute_Sum;

After

procedure Compute_Sum (A : Integer; B : Integer; Sum : out Integer) is
begin
   Sum := A + B;
end Compute_Sum;

The function ... return Integer becomes a procedure with an added Sum : out Integer parameter, and the return A + B; statement becomes an assignment to Sum.

Convert an if-elsif chain to a case statement

dispatch.adb selects between A and B with an if X = 1 … elsif X = 2 chain that tests the same variable in every branch.

$ act refactor-lang convert_if_to_case --file dispatch.adb --params '{"line":1,"column":1}'

Before

if X = 1 then
   A;
elsif X = 2 then
   B;
end if;

After

case X is
   when 1 =>
      A;
   when 2 =>
      B;
end case;

The chain becomes case X is with a when 1 => and a when 2 => alternative, so the selector is named once and each branch reads as an alternative of it.

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-exception-handler`	Wrap a subprogram body with begin/exception/end
`add-mode-to-parameter`	Add in/out/in out mode to parameter
`add-null-check`	Wrap expression in null/access type check with guards
`add-use-clause`	Insert use clause for package
`convert-case-to-if`	Convert simple case statement to if-elsif-else
`convert-for-to-while`	Convert for over range to while with manual iteration
`convert-function-to-procedure`	Convert function to procedure with out parameters
`convert-if-to-case`	Convert if-elsif-else ladder to case statement
`convert-loop-to-while`	Convert for loop to while with explicit counter
`convert-procedure-to-function`	Convert procedure with out parameter to function returning value
`convert-qualified-name-to-string`	Convert qualified name to string representation
`convert-string-to-qualified-name`	Convert string literal to qualified type reference
`convert-while-to-loop`	Convert while to infinite loop with exit condition
`extract-constant`	Extract value into named constant in appropriate scope
`extract-function`	Extract code block into new function with return type inference
`extract-procedure`	Extract code block into new procedure with parameter inference
`extract-variable`	Extract expression into named variable in local scope
`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-array-type`	Generate an array type definition
`generate-enum-type`	Generate an enumeration type definition
`generate-equality-test`	Generate procedure comparing two records
`generate-function-stub`	Generate empty function with signature and return type
`generate-implementation-template`	Generate boilerplate implementation for interface-like contract
`generate-package-body`	Generate a package body (.adb file template)
`generate-package-spec`	Generate a package spec (.ads file template)
`generate-procedure-stub`	Generate empty procedure with signature
`generate-record-accessor`	Generate getter/setter procedures for record field
`generate-record-constructor`	Generate procedure that initializes record
`generate-record-type`	Generate a record type definition
`generate-renames-clause`	Generate renames clause for aliasing
`generate-to-string-function`	Generate function converting type to string representation
`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-constant`	Replace constant reference with literal value
`inline-function`	Replace function call with function body
`inline-variable`	Replace variable reference with assigned value (single use)
`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`	Extract expression into named constant
`introduce-variable`	Extract expression into named variable
`move-local-to-package`	Move local declaration to package scope
`move-package-to-local`	Move package body declaration to local scope
`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)]
`promote-local-to-parameter`	Move local variable to procedure parameter
`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-dead-code`	Remove unreachable code after return/raise/exit
`remove-unnecessary-assignment`	Remove assignment immediately overwritten
`remove-unused-parameter`	Remove procedure/function parameter never used
`remove-unused-variable`	Remove variable declarations never read in the body
`remove-unused-with-clause`	Remove unused with clause importing package
`remove-use-clause`	Remove use clause when fully qualified names are preferred
`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-function`	Rename a function and update all call sites
`rename-identifier`	Rename a variable, constant, or type across all references
`rename-package`	Rename a package and update all with/use clauses
`rename-procedure`	Rename a procedure and update all call sites
`rename-record-field`	Rename a record field and update all accesses
`rename-use-clause`	Rename imported package in use clause

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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