Fortran — 133 Operations for AI Agents

This page is the canonical reference an AI coding agent uses to refactor, query, and analyze Fortran code through the act MCP server. 133 operations available: 59 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
59Refactor
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-allocatable-attribute Add ALLOCATABLE attribute for dynamic memory
add-assumed-shape-attribute Add assumed-shape array declaration with deferred dimensions
add-asynchronous-attribute Add ASYNCHRONOUS attribute for non-blocking I/O variables
add-bind-c-attribute Add BIND(C) attribute for C interoperability
add-codimension-attribute Add CODIMENSION attribute for coarray variables
add-contiguous-attribute Add CONTIGUOUS attribute for pointer or assumed-shape arrays
add-dimension-attribute Add DIMENSION attribute to array declaration
add-end-statement Add END statement to program unit or construct
add-entry-statement Add ENTRY statement to subroutine or function
add-external-declaration Add EXTERNAL declaration for external subprogram
add-implicit-none Add IMPLICIT NONE to module or program
add-intent Add INTENT attribute to subroutine argument
add-only-to-use-statement Add ONLY clause to existing USE statement
add-optional-attribute Add OPTIONAL attribute to subroutine dummy argument
add-parameter-attribute Add PARAMETER attribute to compile-time constant
add-protected-attribute Add PROTECTED attribute to module variable
add-public-private-statements Add explicit PUBLIC/PRIVATE access modifiers
add-recursive-modifier Add RECURSIVE modifier to subroutine or function
add-save-attribute Add SAVE attribute to local variable
add-target-attribute Add TARGET attribute to variable that may be pointed to
add-use-only-statement Convert USE statement to USE ONLY with explicit imports
add-value-attribute Add VALUE attribute to dummy argument for pass-by-value
change-accessibility Change PUBLIC/PRIVATE accessibility
convert-array-element-to-pointer Convert array element access to POINTER association
convert-character-to-string Convert CHARACTER to modern string representation
convert-common-to-module Convert COMMON block to MODULE with module variables
convert-computed-goto Convert computed GOTO to SELECT CASE construct
convert-contains-to-interface Convert CONTAINS section to explicit INTERFACE block
convert-do-concurrent-to-do Convert DO CONCURRENT loop to standard DO loop
convert-do-to-do-while Convert indexed DO loop to DO WHILE loop
convert-do-while-to-do Convert DO WHILE loop to indexed DO loop
convert-elemental-to-pure Add PURE attribute to pure function
convert-fixed-form-to-free-form Convert fixed-form Fortran source layout to free-form
convert-goto-to-if Convert unconditional GOTO to structured IF block
convert-if-to-select-case Convert IF-ELSE chain to SELECT CASE
convert-implicit-to-explicit-typing Convert implicit typing to explicit typing by adding IMPLICIT NONE
convert-implicit-to-none Convert implicit typing to explicit IMPLICIT NONE declarations
convert-pure-to-elemental Add ELEMENTAL attribute for array operations
convert-string-to-character Convert string literal to CHARACTER type
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-allocation-code Generate safe allocation code for an allocatable variable
generate-deallocation-code Generate safe deallocation code for an allocatable variable
generate-derived-type Generate a Fortran derived-type skeleton
generate-module-structure Generate a Fortran module skeleton
generate-subroutine-stub Generate subroutine with parameter list
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)]
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)]
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)]
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 unconditional transfer statement
remove-goto Remove simple unconditional GOTO statement
remove-only-from-use-statement Remove ONLY clause from USE statement to import all symbols
remove-recursive-modifier Remove RECURSIVE modifier from subroutine or function
remove-save-attribute Remove SAVE attribute from local variable
remove-unnecessary-use Remove unused USE statement
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)]
reorder-use-statements Sort and group USE statements alphabetically
wrap-in-module Wrap standalone program unit in a Fortran module

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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