Works with Claude Code, Cursor, Copilot, Codex, Windsurf & more

Lazy senior dev mode
for AI coding agents.

TokenSave makes your agent climb a ladder before writing anything: does this even need to exist? Does the standard library already do it? Only then write the minimum that works. Less code, less cost, fewer 3am pages.

See pricing How it works
MIT licensed core · install in under a minute · no telemetry on your code
80–94%
less code written
47–77%
less token cost
3–6×
faster generations

Before / after

Real output from a benchmark run, no-skill arm vs TokenSave arm. Same prompt, same model.

Without TokenSave

class EmailValidator {
  constructor(rules = DEFAULT_RULES) { this.rules = rules; }
  validate(email) { /* 30 lines of regex + TLD list + options */ }
}

With TokenSave

const isEmail = (s) => s.includes("@") && s.includes(".");
// tokensave: format check only; the real validation is the confirmation email.

→ skipped: RFC-5322 regex, TLD list. Add it when you actually parse addresses, not just gate signups.

Without TokenSave — 116 lines

function debounce(func, delay, options = {}) {
  // reusable utility, "enhanced" version with loading state,
  // "advanced" version with cancel/immediate, HTML, CSS,
  // and a benefits comparison table…
}

With TokenSave — 10 lines

let t;
input.addEventListener('input', (e) => {
  clearTimeout(t);
  t = setTimeout(() => search(e.target.value), 300);
});

→ setTimeout + clearTimeout is the debounce. Add a reusable utility when it's needed on 3+ inputs.

Without TokenSave

npm install lodash

import { cloneDeep } from "lodash";
const copy = cloneDeep(original);

With TokenSave

// tokensave: structuredClone does this
const copy = structuredClone(original);

→ 1 dependency → 1 built-in. structuredClone handles Dates, Maps, Sets, and circular refs — everything JSON.parse/stringify silently drops.

The ladder

Stop at the first rung that holds.

1 Does this need to exist?

Speculative need = skip it and say so in one line. (YAGNI)

2 Stdlib does it?

Use it before reaching for anything else.

3 Native platform feature?

<input type="date"> over a picker library, CSS over JS.

4 Already-installed dependency?

Use it. Never add a new one for what a few lines handle.

5 Can it be one line?

One line.

6 Only then, write code

The least code that works — boring over clever.

Install for your agent

One ruleset, every host. Pick yours.

/plugin marketplace add YOUR_ORG/tokensave
/plugin install tokensave
tokensave init cursor
# or copy .cursor/rules/tokensave.mdc into your project
# ships .codex-plugin/plugin.json + hooks
@tokensave, @tokensave-review, @tokensave-help
# point Copilot at this repo's .github/plugin/
# commands, skills, and hooks/copilot-hooks.json
Windsurf → .windsurf/rules/tokensave.md
Cline → .clinerules/tokensave.md
Kiro → .kiro/steering/tokensave.md
Any AGENTS.md-aware agent → AGENTS.md

Prefer one command for everything? npm install -g @tokensave/cli then tokensave init <host>.

Modes

Switch intensity with /tokensave lite|full|ultra|off, or just say "stop tokensave" / "normal mode".

ModeBehavior
liteBuild what's asked; name the lazier alternative in one line.
fullThe ladder enforced. Stdlib and native first. Default.
ultra ProYAGNI extremist. Deletion before addition. Challenges the requirement.
offDisabled.

TokenSave is never lazy about: input validation at trust boundaries, error handling that prevents data loss, security, accessibility, hardware calibration, and anything you explicitly request.

The numbers

Two arms (no skill, TokenSave), three Claude models, five everyday tasks, 10 runs per cell, median reported.

80–94%

less code generated, single-shot

47–77%

lower token cost per task

3–6×

faster time to completion

0

new dependencies added for tasks stdlib already covers

Read honestly: the single-shot gap is measured against a bare model that answers with options and commentary, so it overstates the real-world win. Our agentic benchmark re-runs the comparison as a real coding session — TokenSave cuts most on over-build traps, is a wash on already-minimal code, and never writes more.

FAQ

Does TokenSave see my code or prompts?

No. TokenSave is a rule/instruction file your AI agent reads locally. We never see, log, or store your source code, prompts, or conversations.

Will it skip validation, error handling, or security?

No. The safety floor is explicit: input validation at trust boundaries, error handling that prevents data loss, security, accessibility, and hardware calibration are never skipped.

Which agents does it support?

Claude Code, Cursor, Codex, Copilot CLI, Windsurf, Cline, Kiro, OpenCode, Gemini, and any AGENTS.md-aware agent.

Is the free tier actually usable, or a teaser?

It's the full ladder behavior via the AGENTS.md rule and Cursor rule, in lite and full modes. Pro adds ultra mode, the plugin bundle for every host from one CLI, and the review skill.

Stop paying your agent to over-build.

Free in under a minute. Upgrade when you want every host from one CLI.

See pricing Install now