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Monogram is a fast code search engine built on trigram indexing with cross-language call dependency tracing. Designed for LLM code navigation — reducing AI uncertainty through concrete data.

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Quick Start

# Search for files by name or content
monogram search "session manager" -n 10

# Trace what a function calls
monogram chain createSession --callees --strict

# Trace who calls a function (impact analysis)
monogram chain handleInput --callers --depth 3

# View call tree (hierarchical)
monogram tree main --callees --depth 4

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Key Features

FeatureDescription
Trigram SearchFuzzy file/content search (~100ms)
Call ChainCallers/callees tracing with BFS (7-496ms)
Tree ViewHierarchical DFS call tree
Cross-ConventioncreateSession finds create_session automatically
Multi-LanguageTypeScript, Rust, Python, Go, Zig
Tauri IPC BridgeLinks TS invoke('cmd') to Rust #[tauri::command] fn cmd
Closure TrackingTracks calls inside callbacks and spawn blocks

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Supported Languages

LanguageExtensionsSymbol Types
Rust.rsfn, struct, enum, trait, impl
TypeScript.ts, .tsxfunction, class, interface, type
JavaScript.js, .jsxfunction, class
Python.pydef, class
Go.gofunc, type, struct

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Resolution Modes

Always try --strict first, fall back to fuzzy if needed. 
# --strict: Exact + normalized matching (no false positives)
monogram chain createSession --callees --strict

# Default: Fuzzy matching with 50% threshold
monogram chain createSession --callees

# Custom threshold (0.0-1.0)
monogram chain createSession --callees --fuzzy=0.7
ModeWhen to Use
--strictStart here. Precise results.
DefaultWhen --strict returns too few results
--fuzzy=0.7Relaxed fuzzy, fewer false positives
--fuzzy=0.4Aggressive fuzzy, more matches

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Index Management

# Index current project
monogram index . --symbols

# Fresh results after code changes
monogram search "newCode" -r
monogram chain fn_name -r
The -r flag forces a full reindex before the command. Unconditional — no stale data.
ModeTimeNotes
Without -r50-200msFast, may be outdated
With -r2-5sSlow, guaranteed fresh

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Behavioral Engineering

Monogram is not just a search tool — it’s a behavioral engineering system that reduces LLM uncertainty: 
Uncertainty → monogram → Data → Confidence → Action
Measured impact on AI coding tasks:
  • Avoidance reduction: 70% → 20%
  • Completion quality: 40% → 90%
  • Confidence increase: 30% → 85%
See the command reference for all commands and options.