install

Additional install commands

macOS

Homebrewverified · 100%

brew install fallow

local Homebrew formula metadata

overview

Package summary

Codebase intelligence for TypeScript and JavaScript

Project links

Commands and aliases

fallow

history

Project history and usage

Fallow is a Rust-native codebase intelligence CLI for JavaScript and TypeScript projects. Its official README positions it as deterministic analysis for quality, changed-code risk, hotspots, duplication, architecture, dependency hygiene, cleanup opportunities, CI, editors, and AI agents.

Project history

The GitHub repository was created in March 2026, making Fallow a new project rather than a long-running ecosystem tool. The README emphasizes static analysis as free and open source, with optional runtime intelligence layered on top for production execution evidence.

The project ships several integration surfaces from the same package family: a CLI, LSP server, MCP server, npm wrapper, Node API, Docker image, and versioned TypeScript output contracts.

Adoption history

Official adoption signals are still early but visible in the project's own distribution choices: npm and Homebrew packaging, `npx fallow` one-off usage, `cargo install fallow-cli`, Docker images, and documented workflows for CI and agent review loops. The README also states that the project dogfoods its JavaScript and TypeScript surfaces in CI.

How it is used

Common commands include `fallow audit` for changed-code review, `fallow health --score --hotspots --targets` for project quality and refactor targets, and `fallow dead-code` for cleanup findings. JSON output is documented for machine consumers.

For agent-oriented workflows, Fallow exposes structured JSON, an MCP server, an LSP, and inspection commands that answer dependency, risk, duplication, cleanup, and evidence questions without asking an AI model to infer them from raw grep results.

Why package nerds care

Fallow is notable in package-manager culture because it packages repository-scale static analysis as a fast local CLI with machine-readable contracts. It sits near linters and type checkers but focuses on cross-file system properties, making it useful as a pre-review gate for both humans and coding agents.

Timeline

2026: Repository created.
2026: v2 release stream active with agent, MCP, LSP, Docker, security, and typed-output features.
2026: v2.103.0 released.

Related projects

npm distributes the JavaScript-facing package.
Cargo distributes the Rust CLI path.
MCP and LSP integrations expose Fallow findings to agents and editors.

Sources

security posture

No protected-tool coverage found yet

No matching local secret-handling manifest was found for fallow. Nucleus package metadata is still published here so future coverage has a stable package URL.

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: .fallowrc.json.fallowrc.jsoncfallow.toml.fallow.toml

executables

Installed executables

Command	Kind	Exposure	Note
`fallow`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version3.2.0

manager updated2026-07-05

local dataok

upstreamcurrent

latest detectedv3.2.0

https://github.com/fallow-rs/fallow

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:fallow
Version	3.2.0
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/fallow
Homepage	https://docs.fallow.tools
Repository	https://github.com/fallow-rs/fallow
Upstream docs	https://docs.fallow.tools
License	MIT
Source archive	https://github.com/fallow-rs/fallow/archive/refs/tags/v3.2.0.tar.gz
Last updated	2026-07-05T23:53:05Z
Pulse	updated
Build dependencies	rust
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	fallow
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/fallow.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
package relationship graph
package version freshness
package-page enrichment

Install fallow with Homebrew