The Overplus home page shows one real week: $693 of Claude Code calls went down to $369, which is 1.9× the work on the same plan. This page says what that number is, what it is not, and what Overplus touches on your Mac.
Where the numbers come from
Every number comes from real calls. The home page uses the Claude Code transcripts of one builder, Sep 17 to 23, 2026: 3,864 calls in 27 sessions. We priced each call at Anthropic API list price, before and after Overplus. Anthropic does not publish how plan limits weigh tokens, so dollars at list price are the fairest common unit.
In the app, the numbers come from your own calls, read on your Mac. The “check your own week” tool on the home page does the same in your browser tab. Nothing is uploaded.
Real data, estimate, up to
- Real data. Real calls, priced at list price, before and after Overplus.
- Estimate. A part of a saving that the calls alone cannot show. The app tags it as an estimate. The builder's one real week includes some estimated parts.
- Up to 3×. The most we expect on the same plan. It is a claim, not data. Your week can show less.
How Overplus gets each saving stays private. The outcome is what you can check: your own bill, before and after.
Codex
On Codex, Overplus tracks limits, spend and token use, and can set the user-level defaults for model, reasoning effort and automatic compaction. It does not route individual Codex requests. The up to 3× saving claim is for Claude Code only.
What Overplus touches on your Mac
- The path. On Claude Code, each request goes from Claude Code to the Overplus proxy on 127.0.0.1:8788, then to api.anthropic.com over HTTPS. Nowhere else. Replies stream straight back.
- Your login. It stays in Claude Code. It rides in the request headers. Overplus passes them on and never saves them.
- The edits. At most three fields: model, effort and reply cap. Your prompt, code and chat history pass as sent. The proxy listens on 127.0.0.1 only, so no other machine can reach it.
- What stays on your Mac. A request log with token counts, model names and a 140-character preview of your last message. Transcripts are read on disk to price your week. The log and the transcripts are not uploaded.
- What goes to www.overplus.dev. Your account email, license state, device name, app events (app opened, panel opened, lever switched) and daily usage counts (tokens, requests, list price, saved dollars, which levers are on, limit peaks). Required for every account. Never prompts, replies, code, file paths, project or repo names, MCP server names or credentials. The full field list is on the privacy page.
How to turn it off
- One click. In the menu bar, choose Point Claude Code back to Anthropic. New sessions go straight there. Open sessions pass through untouched until they restart.
- Quit. Claude Code points back at api.anthropic.com. Ctrl-C or a plain kill does the same. Restart open sessions after. A force quit or a crash skips this step: open Overplus and quit it again.
- Undo any setting. Overplus records the old value of every setting it changes. Switch a feature off and that value comes back. Keys it never touched stay as they were. The first edit also saves a copy at
~/.claude/settings.json.overplus-backup.