Tact — 132 Operations for AI Agents

Tact contracts run on TON, where message-passing and gas discipline shape every design. act101 gives agents the contract's receivers, getters, and structs as a map, so on-chain logic stays navigable.

This page is the canonical reference an AI coding agent uses to refactor, query, and analyze Tact code through the act MCP server. 132 operations available: 58 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.

Premium language. Operations on Tact require an Elite license or above. See pricing.

18Query

58Refactor

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-bounced-handler`	Insert a bounced handler for a message into a Tact contract body.
`add-constant`	Add a top-level Tact constant declaration.
`add-field`	Add a field to a Tact struct/contract/message body.
`add-gas-check`	Insert an acceptMessage() gas-acceptance call at the start of a Tact function body.
`add-init-parameter`	Add a parameter to a Tact contract's init signature and a matching self-assignment, creating init if absent.
`add-opcode-annotation`	Add or update the message(opcode) annotation on a Tact message type.
`add-receiver`	Insert a receive handler for a message into a Tact contract body.
`change-opcode`	Change an existing message opcode value on a Tact message type.
`convert-getter-to-internal`	Convert a Tact getter function back to internal by removing the get modifier.
`convert-map-to-structs`	Replace a Tact map<K,V> field with a struct-typed field.
`convert-message-to-struct`	Convert a Tact message into a struct by dropping the opcode and changing the keyword.
`convert-send-parameters-to-builder`	Introduce a beginCell()-constructed body field into a Tact SendParameters instance inside a send() call.
`convert-struct-to-message`	Convert a Tact struct into a message by inserting an opcode and changing the keyword.
`convert-to-getter`	Convert a Tact function into an externally-readable getter by adding the get modifier.
`convert-to-map`	Convert named Tact struct fields into a single map<K,V> field.
`convert-to-mixin`	Compose a named Tact trait into the first contract via the with clause.
`extract-function`	Extract selected Tact lines into a new function and replace them with a call.
`extract-mixin`	Move named Tact top-level functions into a newly-created trait.
`extract-struct`	Extract selected fields from a Tact struct into a new nested struct.
`extract-to-contract`	Move named top-level Tact declarations (struct/message/const/function) into a new contract body.
`extract-to-trait`	Extract selected Tact functions' declarations into a new top-level trait.
`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)]
`fix-bounced-handler-signature`	Correct a Tact contract's bounced() parameter type to a given message type.
`fix-gas-limit-exceeded`	Insert an acceptMessage() gas-acceptance call at the start of a Tact function body.
`fix-invalid-message-opcode`	Set a valid opcode on a Tact message type (add or replace message_value).
`fix-missing-init`	Add an init() to a Tact contract initializing its uninitialized storage fields.
`fix-uninitialized-field`	Initialize a Tact contract's uninitialized storage field in init().
`gen-contract-scaffold`	Generate a minimal Tact contract scaffold (init/receive/getter stubs).
`gen-deployment-script`	Generate a minimal Tact deployment scaffold contract (Tact has no native deploy syntax).
`gen-dex-pool-contract`	Generate a minimal Tact DEX pool contract scaffold.
`gen-getter-function`	Generate a Tact get-function stub wrapped in a contract.
`gen-jetton-contract`	Generate a minimal Tact Jetton minter scaffold (not TEP-74 complete).
`gen-message-definition`	Generate a Tact message(opcode) type definition scaffold.
`gen-multisig-contract`	Generate a minimal Tact multisig wallet scaffold.
`gen-nft-contract`	Generate a minimal Tact NFT collection scaffold (not TEP-62 complete).
`gen-receiver-function`	Generate a Tact receive() handler stub for a message, wrapped in a contract.
`gen-test-scaffold`	Generate a minimal Tact test scaffold contract (Tact has no native test syntax).
`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`	Inline a simple single-expression Tact function at its same-file call sites.
`inline-struct`	Inline a single-use Tact struct's fields into its parent struct.
`inline-trait`	Inline a Tact trait's member functions to top level and remove the trait declaration.
`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-bounced-handler`	Remove the bounced handler for a message from a Tact contract.
`remove-constant`	Remove a top-level Tact constant and substitute same-file references with its value.
`remove-field`	Remove an unused field from a Tact struct/contract/message body.
`remove-gas-check`	Remove an acceptMessage() gas-acceptance call from a Tact function body.
`remove-init-parameter`	Remove a parameter from a Tact contract's init signature and its matching self-assignment.
`remove-receiver`	Remove the receive handler for a message from a Tact contract.
`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-contract`	Rename a Tact contract and same-file references.
`rename-field`	Rename a Tact struct/contract/message field and same-file access/instance sites.
`rename-function`	Rename a Tact function and same-file direct call sites.
`rename-message`	Rename a Tact message and same-file type/constructor references.
`rename-struct`	Rename a Tact struct and same-file type/constructor references.
`reorder-fields`	Reorder the fields of a Tact struct/contract/message into a new order.

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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