archex 0.3.0

Architecture extraction & codebase intelligence for the agentic era

archex

Architecture extraction and codebase intelligence for the agentic era.

archex is a Python library and CLI that transforms any Git repository into structured architectural intelligence and token-budget-aware code context. It serves two consumers from a single index: human architects receive an ArchProfile with module boundaries, dependency graphs, detected patterns, and interface surfaces; AI agents receive a ContextBundle with relevance-ranked, syntax-aligned code chunks assembled to fit within a specified token budget.

Features

• 4 language adapters — Python, TypeScript/JavaScript, Go, Rust (tree-sitter AST parsing)
• 3 public APIs — analyze(), query(), compare()
• Hybrid retrieval — BM25 keyword search + optional vector embeddings with reciprocal rank fusion
• Token budget assembly — AST-aware chunking, dependency-graph expansion, greedy bin-packing
• Structural analysis — module detection (Louvain), pattern recognition, interface extraction
• Cross-repo comparison — 6 architectural dimensions, no LLM required
• LLM-optional — entire structural pipeline runs without API calls; LLM enrichment is opt-in

Installation

pip install archex

Extras

Extra	What it adds
archex[vector]	ONNX-based local embeddings (Nomic Code)
archex[vector-torch]	Torch-backed sentence-transformers
archex[voyage]	Voyage Code API embeddings
archex[openai]	OpenAI API embeddings + LLM enrichment
archex[anthropic]	Anthropic API LLM enrichment
archex[all]	All optional dependencies

Quick Start

Python API

from archex import analyze, query, compare
from archex.models import RepoSource

# Architectural analysis
profile = analyze(RepoSource(local_path="./my-project"))
for module in profile.module_map:
    print(f"{module.name}: {len(module.files)} files")
for pattern in profile.pattern_catalog:
    print(f"[{pattern.confidence:.0%}] {pattern.name}")

# Implementation context for an agent
bundle = query(
    RepoSource(local_path="./my-project"),
    "How does authentication work?",
    token_budget=8192,
)
print(bundle.to_prompt(format="xml"))

# Cross-repo comparison
result = compare(
    RepoSource(local_path="./project-a"),
    RepoSource(local_path="./project-b"),
    dimensions=["error_handling", "api_surface"],
)

CLI

# Analyze a local repo or remote URL
archex analyze ./my-project --format json
archex analyze https://github.com/org/repo --format markdown -l python --timing

# Query for implementation context
archex query ./my-project "How does auth work?" --budget 8192 --format xml
archex query ./my-project "connection pooling" --strategy hybrid --timing

# Compare two repositories
archex compare ./project-a ./project-b --dimensions error_handling,api_surface --format markdown

# Manage the analysis cache
archex cache list
archex cache clean --max-age 168
archex cache info

CLI Reference

archex analyze <source>

Analyze a repository and produce an architecture profile.

Option	Default	Description
--format	json	Output format: json, markdown
-l / --language	all	Filter by language (repeatable)
--timing	off	Print timing breakdown to stderr

archex query <source> <question>

Query a repository and return a context bundle.

Option	Default	Description
--budget	8192	Token budget for context assembly
--format	xml	Output format: xml, json, markdown
-l / --language	all	Filter by language (repeatable)
--strategy	bm25	Retrieval strategy: bm25, hybrid
--timing	off	Print timing breakdown to stderr

archex compare <source_a> <source_b>

Compare two repositories across architectural dimensions.

Option	Default	Description
--dimensions	all 6	Comma-separated dimension list
--format	json	Output format: json, markdown
-l / --language	all	Filter by language (repeatable)

Supported dimensions: api_surface, concurrency, configuration, error_handling, state_management, testing.

archex cache <subcommand>

Manage the local analysis cache.

Subcommand	Options	Description
list	--cache-dir	List cached entries
clean	--max-age N (hours), --cache-dir	Remove expired entries
info	--cache-dir	Show cache summary

Development

git clone https://github.com/AetherForge/archex.git
cd archex
uv sync --all-extras

# Run tests (372 tests)
uv run pytest

# Lint and format
uv run ruff check .
uv run ruff format .

# Type check (strict mode)
uv run pyright

License

Apache 2.0 — see LICENSE.