moesniper 0.5.0

Escape-proof precision file editor for LLM agents. Hex-encoded content, line-range splicing, atomic writes.
Documentation

moesniper 🎯

Escape-proof precision file editor for LLM agents offering hex-encoded content, line-range splicing, and atomic writes.

License: MIT

See It In Action

# 1. Encode your text safely
HEX=$(sniper encode "fn main() { println!(\"Hello World\"); }")

# 2. Splice lines 1-1 with the hex payload
sniper target.rs 1 1 $HEX

Features

  • Multi-Step Undo: Support for sequential rollbacks. Each --undo pops the stack.
  • Path Normalization: Uses canonicalized paths to ensure history consistency across relative/absolute path calls.
  • Strict Hex Decoding: Errors on malformed or odd-length hex strings to prevent silent data corruption.
  • Internal Encoding: sniper encode sub-command for generating payloads without external xxd dependencies.
  • Metabolic Safety: Integrated with llmosafe v0.4.2 for adaptive back-pressure and load-aware throttling.
  • Newline Fidelity: Measures and preserves the original file's trailing newline state.

Quick Start

cargo install --path .

# Edit a file
sniper file.rs 10 15 "68656c6c6f"

# Roll back multiple steps
sniper file.rs --undo
sniper file.rs --undo

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for details.

License

moesniper is released under the MIT License.

The Engine

Uses temporary files and atomic renaming. Edits are processed through memory, guarded by llmosafe's ResourceGuard. If system entropy is high, the tool applies dynamic back-pressure (sleep) before completing the write.

Context

Text editing is brittle for LLMs due to shell escaping and terminal corruption. moesniper replaces naive sed or cat patching with precision, deterministic splicing using hex-encoded payloads.