Specs your AI assistant actually follows.

AnchorSpec is a clean, telemetry-free fork of OpenSpec. Plan changes against durable specs, run them through your AI workflow, and ship — without the phone-home.

Get started View on GitHub

$ npm install -g anchorspec

How it works

One workflow. Three commands.

The core profile gives you everything you need from intent to merged code.

/ansx:propose

Draft a change proposal — your AI assistant writes a spec delta, design notes, and a task list before touching code.

/ansx:apply

Execute the plan against your codebase. Specs stay the source of truth; deltas guide the implementation.

/ansx:archive

Archive the change and roll the canonical specs forward. History is preserved, the workspace stays clean.

What you get

OpenSpec features. Zero tracking.

Drop-in replacement for the CLI. Same commands, same primitives — analytics removed at the source.

Telemetry stripped

All analytics, usage reporting, and outbound tracking removed at the source. Audit the diff yourself.

Full feature parity

Every OpenSpec capability is intact — validation, code generation, diffing, archival.

Stays current

Tracks upstream OpenSpec releases so you never fall behind on features or fixes.

Drop-in replacement

Same CLI surface. Swap the binary, keep your existing scripts and AI assistant configs.

Skills included

ansx is a 1-to-1 replacement for opsx.

Open source, MIT

Independently maintained. Inspect every line, fork the fork, run it on your own infrastructure.

Try it

Init a project in 30 seconds.

Drops in anchorspec/ with specs, changes, and a minimal config.

$ npm install -g anchorspec

$ anchorspec init

$ anchorspec --help