Fallow releases, newest first.

Fallow is built in public, and every release is tagged on GitHub. These are releases of the open-source scan you run with npx fallow. The latest is Fallow 3.33.1. Below are the 50 most recent, each with a link to its full notes.

All releases on GitHubnpx fallow

October 10, 2026v3.33.1
Health and duplication baselines in CI, Vitest fixes
The GitHub Action and the GitLab template can baseline health and duplication on the default run.
Release notes for v3.33.1 on GitHub (opens in a new tab)
October 9, 2026v3.33.0
Fallow architecture, baseline pruning, faster musl binaries
A JSX import source in a Vitest config now adds a module graph edge.
Release notes for v3.33.0 on GitHub (opens in a new tab)
October 7, 2026v3.32.0
Grouped health trends, markdown from saved runs, dead-code accuracy fixes
The new fallow-setup skill tells an agent how to add code-quality tools.
Release notes for v3.32.0 on GitHub (opens in a new tab)
September 30, 2026v3.31.0
Per-package changedSince baselines, package cycles, stable dead-code finding ids, shrink-only baselines
Per-package changedSince baselines for monorepos.
Release notes for v3.31.0 on GitHub (opens in a new tab)
September 26, 2026v3.30.0
Flag retirement report, startup import weight, faster language server, Oxc 0.151
The retirement report works in every fallow flags format and gives each flag an age from git.
Release notes for v3.30.0 on GitHub (opens in a new tab)
September 26, 2026v3.29.0
Raw V8 coverage, parse-error gate, complexity rule levels, deprecated export consumers
A run can fail when Fallow cannot parse a source file.
Release notes for v3.29.0 on GitHub (opens in a new tab)
September 22, 2026v3.28.0
Baselines carry a kind, request outcomes on every surface, Module Federation and Nuxt reads
Every saved baseline now says which command wrote it.
Release notes for v3.28.0 on GitHub (opens in a new tab)
September 17, 2026v3.27.0
Every CI gate can fail the job, baseline staleness in CI, gate results in MCP
An armed gate reports its result in the JSON output.
Release notes for v3.27.0 on GitHub (opens in a new tab)
September 16, 2026v3.26.0
Stale-baseline gate, built-in exclusion diagnostics, rule overrides everywhere
A run can say which built-in ignore pattern removed source files.
Release notes for v3.26.0 on GitHub (opens in a new tab)
September 11, 2026v3.25.0
Positional path scope, runtime coverage joins callbacks and object members
Bare fallow, check, dupes, health, audit, security, fix, list and similar-code now take an optional positional path.
Release notes for v3.25.0 on GitHub (opens in a new tab)
September 10, 2026v3.24.1
--production stops calling a test-only export safe to delete
A single-fix patch release for #2594.
Release notes for v3.24.1 on GitHub (opens in a new tab)
September 9, 2026v3.24.0
Findings that say when the run behind them was incomplete
This release is about output honesty. Fallow should not present a number that is a floor as a total, and a zero that means "not measured" now says so. A mutation that rests on an incomplete picture…
Release notes for v3.24.0 on GitHub (opens in a new tab)
September 7, 2026v3.23.0
A readiness check, and reports that survive a moved checkout
An empty Fallow report has always been ambiguous. It can mean the project is clean, or it can mean Fallow never resolved your config and analyzed almost nothing, and until now the output looked the…
Release notes for v3.23.0 on GitHub (opens in a new tab)
September 1, 2026v3.22.0
Honest answers from surfaces that were guessing
Fifty commits since v3.21.0. The theme this cycle is honesty about what the tool knows: several surfaces were reporting a confident answer they had not earned.
Release notes for v3.22.0 on GitHub (opens in a new tab)
August 31, 2026v3.21.0
Runtime coverage joins the maps producers write, plus a visible discovery skip
Runtime coverage is the theme. A coverage map that Fallow could not join used to read exactly like code with no tests, and in one case it could make a function look better than the static estimate…
Release notes for v3.21.0 on GitHub (opens in a new tab)
August 28, 2026v3.20.0
Yarn PnP resolution, monorepo tsconfig scope, review schema 8
Yarn Plug'n'Play projects resolve like any other project. A PnP install has no populated node_modules, so every bare import used to miss and fall through to the much slower path, which on a large…
Release notes for v3.20.0 on GitHub (opens in a new tab)
August 27, 2026v3.19.0
One-pass agent install, MCP resources, similar-code discovery
One command to wire your coding agents. npx fallow agent install detects Claude Code, Codex, and Cursor from the project, your home directory, and the session, then writes what each one reads: an…
Release notes for v3.19.0 on GitHub (opens in a new tab)
August 25, 2026v3.18.0
More accurate graphs, consistent diagnostics, leaner editor packages
Fallow 3.18.0 makes dead-code analysis more accurate across equivalent module shapes, aligns workspace and programmatic diagnostics with the CLI, and reduces normal VS Code extension downloads with…
Release notes for v3.18.0 on GitHub (opens in a new tab)
August 17, 2026v3.17.0
Type-aware CI output and Windows reliability
Type-aware analysis is easier to use in CI, more accurate around ambiguous exports, and more reliable across platforms.
Release notes for v3.17.0 on GitHub (opens in a new tab)
August 13, 2026v3.16.0
Honest template scoring, prunable audit cache, visible demotion
Health scoring gets more honest and more configurable in this release: template-family units drop the CRAP dimension they could never earn coverage for, Svelte {#snippet} blocks are scored as…
Release notes for v3.16.0 on GitHub (opens in a new tab)
August 12, 2026v3.15.0
Near-miss clone detection, diagnosable threshold overrides, community bug fixes
A health.thresholdOverrides entry that did not silence a finding now tells you why: every override row carries a required dimension (complexity or crap), a new insufficient status marks an…
Release notes for v3.15.0 on GitHub (opens in a new tab)
August 4, 2026v3.14.0
DoMock-aware coverage, faster discovery and alias propagation
Mock-aware coverage learns doMock, workspace discovery and alias propagation got faster, and type-aware status tells the truth about how it found the sidecar.
Release notes for v3.14.0 on GitHub (opens in a new tab)
August 3, 2026v3.13.0
Action-provisioned type-aware sidecar, flag-proof agent gate
The GitHub Action now provisions the type-aware sidecar itself, and the agent gate stops being fooled by git-level flags.
Release notes for v3.13.0 on GitHub (opens in a new tab)
August 3, 2026v3.12.0
Type-aware audit enablement, rename-aware gating, sturdier baselines
Type-aware analysis and audit --gate new-only now work together out of the box, audits survive git mv, and health baselines got sturdier.
Release notes for v3.12.0 on GitHub (opens in a new tab)
August 2, 2026v3.11.0
Deno workspaces, Server Action security fix, mock-aware coverage
Deno joins the workspace family, four community-reported false positives are gone, and parallel CI review jobs stop stepping on each other.
Release notes for v3.11.0 on GitHub (opens in a new tab)
July 27, 2026v3.10.0
Stable type-aware TypeScript analysis
npm installs receive the exact matching fallow-type-aware companion as an optional dependency, so there is nothing else to wire up. See the type-aware analysis guide.
Release notes for v3.10.0 on GitHub (opens in a new tab)
July 23, 2026v3.9.1
Impact statusline for agents
The Fallow plugin for Claude Code can compose this line with an existing status line. Codex and other agents can use the same stable command through the bundled Fallow skill.
Release notes for v3.9.1 on GitHub (opens in a new tab)
July 23, 2026v3.8.1
Trustworthy cloud runtime evidence
When the active deployment has not collected enough isolated production evidence, the CLI keeps the result non-actionable instead of treating any tracked function as sufficient proof. Once the…
Release notes for v3.8.1 on GitHub (opens in a new tab)
July 22, 2026v3.8.0
Interactive codebase map (fallow viz)
Click any file to open a detail panel with the evidence behind each finding: unused export names, clone groups and their other locations, boundary crossings, cycle membership, importers and imports…
Release notes for v3.8.0 on GitHub (opens in a new tab)
July 20, 2026v3.7.1
False-positive fixes for inherited members and tsconfig aliases
A patch release with two dead-code false-positive fixes and a performance improvement to star re-export analysis.
Release notes for v3.7.1 on GitHub (opens in a new tab)
July 20, 2026v3.7.0
Bounded analysis on minified bundles, VS Code baseline-at-HEAD, hardened inputs
Bounded analysis on large minified bundles. Repos that ship dense single-line bundles (precompiled editor assets such as ProseMirror) could drive fallow dead-code to tens of GiB of memory and…
Release notes for v3.7.0 on GitHub (opens in a new tab)
July 15, 2026v3.6.0
Compact JSON by default, reusable audit caches, Windows diagnostics fix
Fallow v3.6.0 makes --format json leaner by default, adds first-class cleanup for reusable audit caches, and fixes editor diagnostics on Windows.
Release notes for v3.6.0 on GitHub (opens in a new tab)
July 14, 2026v3.5.1
Sharper dead-code crediting, license-token hardening
This patch sharpens dead-code crediting for two common architecture patterns, hardens license-token file handling, and speeds up named re-export and workspace bucketing at scale.
Release notes for v3.5.1 on GitHub (opens in a new tab)
July 14, 2026v3.5.0
Smaller npm install, native GitHub Action rendering, schema-typed error envelope
npm platform packages now ship a single fallow binary instead of three.
Release notes for v3.5.0 on GitHub (opens in a new tab)
July 13, 2026v3.4.2
Suppression inventory, native GitHub output, monorepo CI paths, member-crediting accuracy
MCP tool list_suppressions
Release notes for v3.4.2 on GitHub (opens in a new tab)
July 9, 2026v3.3.0
Verifiable plugin authoring, config recommendations, and hardened agent surfaces
Self-documenting capability surface
Release notes for v3.3.0 on GitHub (opens in a new tab)
July 5, 2026v3.2.0
Configurable large-function threshold, surfaced in the health summary
This release makes the unit-size (large-function) check configurable and reports the effective ceiling in the health output.
Release notes for v3.2.0 on GitHub (opens in a new tab)
July 5, 2026v3.1.0
Dev-dependency-in-production rule, member tracing, conditional dynamic imports
The promote-side mirror of test-only-dependency and type-only-dependency. A package in devDependencies that a production (non-test, non-config) file imports at runtime is flagged so you can…
Release notes for v3.1.0 on GitHub (opens in a new tab)
July 4, 2026v3.0.0
New brand, styling audit, rule packs, and architecture guard
Fallow 3.0 is a major release for one reason: fallow audit, the gate that already reviews your TypeScript and JavaScript, now reviews your CSS and CSS-in-JS in the same PR, in the same JSON…
Release notes for v3.0.0 on GitHub (opens in a new tab)
July 1, 2026v2.104.0
CSS-in-JS intelligence, styling health, token blast-radius
This release is heavy on CSS intelligence. fallow health --css now understands CSS-in-JS (styled-components, emotion, linaria, vanilla-extract, StyleX, Panda) as first-class, ships a second…
Release notes for v2.104.0 on GitHub (opens in a new tab)
June 28, 2026v2.103.0
Typed output contracts, runtime trust-output, false-positive fixes
All three additions are additive and backwards-compatible.
Release notes for v2.103.0 on GitHub (opens in a new tab)
June 23, 2026v2.102.0
Code review brief, decision surface, and symbol-level trace
This release adds a toolkit for reviewing changed code, designed for both human reviewers and AI agents.
Release notes for v2.102.0 on GitHub (opens in a new tab)
June 20, 2026v2.101.0
Faster duplicate detection, stylesheet resolution, and namespace-component fixes
A performance and bug-fix release: faster duplicate detection, stylesheet resolution, and plugin detection on large repositories, plus false-positive fixes for Vue namespace components, Varlock, and…
Release notes for v2.101.0 on GitHub (opens in a new tab)
June 19, 2026v2.100.0
Agent inspect bundles, security verifier workflows, web-format duplicate detection
Fallow v2.100.0 bundles new agent and security workflows, broader duplicate detection, framework-aware health, and a batch of accuracy fixes.
Release notes for v2.100.0 on GitHub (opens in a new tab)
June 18, 2026v2.99.0
Opt-in suppression reasons
This release adds opt-in suppression hygiene and fixes three reported issues across detection accuracy, the editor extension, and catalog support.
Release notes for v2.99.0 on GitHub (opens in a new tab)
June 17, 2026v2.98.0
Angular component IO, Svelte events, Vue/Svelte template complexity
This release deepens framework-aware dead-code and complexity analysis across Angular, Vue, and Svelte, and widens React Server Component checks beyond Next.js.
Release notes for v2.98.0 on GitHub (opens in a new tab)
June 16, 2026v2.97.0
CSS/Tailwind intelligence, framework health, RSC boundaries
v2.97.0 brings a CSS and Tailwind intelligence layer to fallow health, a wave of framework-specific dead-code and health checks across SvelteKit, Vue, Pinia, and Next.js, the Next.js React Server…
Release notes for v2.97.0 on GitHub (opens in a new tab)
June 13, 2026v2.96.0
Dupes ignores imports by default, Impact moves to user dir, VS Code mute fix
This release changes two analysis defaults, relocates Fallow Impact history out of your repo, and fixes the VS Code diagnostic-mute toggle.
Release notes for v2.96.0 on GitHub (opens in a new tab)
June 12, 2026v2.95.0
Docker image, per-file health thresholds, scoped policy suppressions
Fallow now ships a checksum-verified Dockerfile for the pinned Linux musl release binary, a source-built contributor Dockerfile, and a copyable Compose example. Projects mount at /workspace with…
Release notes for v2.95.0 on GitHub (opens in a new tab)
June 12, 2026v2.94.0
Agent onboarding, weekly impact digest, task matrix
v2.94.0 makes Fallow easier to discover and adopt from inside coding agents, and starts reporting the value it delivers back to you.
Release notes for v2.94.0 on GitHub (opens in a new tab)

Releases

Health and duplication baselines in CI, Vitest fixes

Fallow architecture, baseline pruning, faster musl binaries

Grouped health trends, markdown from saved runs, dead-code accuracy fixes

Per-package changedSince baselines, package cycles, stable dead-code finding ids, shrink-only baselines

Flag retirement report, startup import weight, faster language server, Oxc 0.151

Raw V8 coverage, parse-error gate, complexity rule levels, deprecated export consumers

Baselines carry a kind, request outcomes on every surface, Module Federation and Nuxt reads

Every CI gate can fail the job, baseline staleness in CI, gate results in MCP

Stale-baseline gate, built-in exclusion diagnostics, rule overrides everywhere

Positional path scope, runtime coverage joins callbacks and object members

--production stops calling a test-only export safe to delete

Findings that say when the run behind them was incomplete

A readiness check, and reports that survive a moved checkout

Honest answers from surfaces that were guessing

Runtime coverage joins the maps producers write, plus a visible discovery skip

Yarn PnP resolution, monorepo tsconfig scope, review schema 8

One-pass agent install, MCP resources, similar-code discovery

More accurate graphs, consistent diagnostics, leaner editor packages

Type-aware CI output and Windows reliability

Honest template scoring, prunable audit cache, visible demotion

Near-miss clone detection, diagnosable threshold overrides, community bug fixes

DoMock-aware coverage, faster discovery and alias propagation

Action-provisioned type-aware sidecar, flag-proof agent gate

Type-aware audit enablement, rename-aware gating, sturdier baselines

Deno workspaces, Server Action security fix, mock-aware coverage

Stable type-aware TypeScript analysis

Impact statusline for agents

Trustworthy cloud runtime evidence

Interactive codebase map (fallow viz)

False-positive fixes for inherited members and tsconfig aliases

Bounded analysis on minified bundles, VS Code baseline-at-HEAD, hardened inputs

Compact JSON by default, reusable audit caches, Windows diagnostics fix

Sharper dead-code crediting, license-token hardening

Smaller npm install, native GitHub Action rendering, schema-typed error envelope

Suppression inventory, native GitHub output, monorepo CI paths, member-crediting accuracy

Verifiable plugin authoring, config recommendations, and hardened agent surfaces

Configurable large-function threshold, surfaced in the health summary

Dev-dependency-in-production rule, member tracing, conditional dynamic imports

New brand, styling audit, rule packs, and architecture guard

CSS-in-JS intelligence, styling health, token blast-radius

Typed output contracts, runtime trust-output, false-positive fixes

Code review brief, decision surface, and symbol-level trace

Faster duplicate detection, stylesheet resolution, and namespace-component fixes

Agent inspect bundles, security verifier workflows, web-format duplicate detection

Opt-in suppression reasons

Angular component IO, Svelte events, Vue/Svelte template complexity

CSS/Tailwind intelligence, framework health, RSC boundaries

Dupes ignores imports by default, Impact moves to user dir, VS Code mute fix

Docker image, per-file health thresholds, scoped policy suppressions

Agent onboarding, weekly impact digest, task matrix