# Verify Proof

Validate a Lean proof against a formal statement.

This tool is deprecated and will be removed in a future release.

Use [extract_decls](https://axle.axiommath.ai/extract_decls) instead, which supports all declaration kinds.

## Input

- **environment***: Lean environment or version
  - lean-4.32.0
  - lean-4.31.0
  - lean-4.30.0
  - lean-4.29.0
  - lean-4.28.0
  - lean-4.27.0
  - lean-4.26.0
  - lean-4.25.1
  - lean-4.24.0
  - lean-4.23.0
  - lean-4.22.0
  - lean-4.21.0

- **ignore_imports**: Ignore import mismatches (Default header injected when enabled: `import Mathlib`)

- **formal_statement***: The theorem to verify against.

- **content***: Candidate proof to verify.

- **permitted_sorries**: Theorems allowed to contain `sorry`.

- **mathlib_options**: Enable Mathlib options.

- **use_def_eq**: Use definitional equality for type comparison.

- **verify_negation**: Also check whether `content` proves the negation of the statement.

- **timeout_seconds**: Max execution time in seconds.

## Result

- **Shareable Link**

- **API Call**