Stop explaining
your codebase
to AI.

Contextra reads your prompt’s intent and auto-injects only the relevant slices of your codebase — cutting token costs and making AI outputs dramatically more precise.

Get early access
−73%token reduction
4.2×output accuracy
Works withClaudeCopilotCursorGPT
contextra/01 · speed × cost
−73%tokens

Fixbugs10×fasterand5×cheaper.

fewer tokens, smaller bill

Feedtheagentcontextbeforeitburnstokens.

right context, right moment

Tellyouragentexactlywhattodo.

surgical instructions, every prompt

Shipthesolutioninoneshot.

no ping-pong, no retries
Features

Precision context. Zero overhead.

Every feature is built around one idea: your AI tools should already understand your codebase.

Semantic Understanding

Knows what you're actually asking

Contextual parsing goes beyond keywords — Contextra maps your prompt's real goal against the semantic shape of your codebase.

"Fix the auth bug in our Express app"
  ↳ intent: debug · auth · middleware

Codebase Intelligence

Builds a live map of your repo

Files, exports, imports, types, and dependencies — all mapped structurally without storing a single line of code.

Token Efficiency

Up to 83% fewer tokens per request

Stop padding every prompt with manual context. Contextra delivers surgical precision — only what the model actually needs.

Before1,840 tok
After312 tok

↓ 83% reduction

Line-level accuracy

Exact file ranges, not whole modules

Inject auth/middleware.ts:44–91, not the entire file. Smaller context window, sharper and faster answers.

↳auth/middleware.ts:44–91
↳lib/redis.ts:12–34
↳types/jwt.ts:1–18
·config/app.ts:1–220
·server.ts:1–180
Zero Setup

Connect your repo in seconds

Read-only GitHub OAuth. No code is stored on our servers, no agents run in your environment. We only ever see structure — never your source.

Works everywhere

Any AI tool you already use

Claude, Copilot, Cursor, GPT-4o. Drop Contextra between your intent and the model — no workflow changes required.

ClaudeCopilotCursorGPT-4o
How it works

From prompt to precision output in milliseconds.

Four steps. Zero friction. Works inside the tools you already use.

01
Setup

Connect your repository

Read-only GitHub OAuth. Contextra takes a snapshot of your directory — the file tree, imports, and dependency graph. Nothing is saved. No source code ever lands on our servers. Your IP stays yours.

acme-corp / nexus-api

read-only · private

mapping…

structure graph

▸src/auth/analyzed
·middleware.ts
·tokens.ts
▸src/lib/analyzed
·redis.ts
▸src/types/
·index.ts
▸package.json

847

files

12.3k

nodes

4.1k

edges

02
Install

Pick the surface you work in

Install the VS Code extension for your editor, the Chrome extension for browser tools like Claude.ai, Codex, and ChatGPT, or skip installs and use the dashboard right here on the web. One account, three surfaces.

VS CodeChromeWeb
new chat

Editor, browser, or web — same prompt, same optimize.

03
Optimize

Write your prompt, one click to optimize

Web — paste your prompt into the dashboard and hit Optimize. Chrome — click the Optimize button that drops into Claude, Codex, and other tools. VS Code — create a prompt.md, type your prompt, select it, and press Ctrl+Shift+O (signed in, repo connected).

contextra · analyzing

›Parsing semantic intentrunning…
·Traversing dependency graph
·Scoring 847 files for relevance
·Selecting 3 line ranges
·Injecting context
1,840312tokens
↓ 83%
04
Result

A surgically-scoped prompt. Every time.

Contextra scores every file in your repo for relevance and injects only the line ranges that matter. Your AI tool receives precision context — fewer tokens, lower cost, outputs that actually understand your architecture.

Claude · response312 tok
The bug is on line 67 of auth/middleware.ts — the token refresh handler isn't awaiting the Redis TTL check.
−83%Token reduction
−61%Latency
+4.2×Output accuracy
FAQ

Got questions?

Everything you need to know before you connect your first repo.

−73%token reduction
4.2×output accuracy
< 1sinjection latency
01
Privacy

Does Contextra store my source code?

No. Contextra only maps your repository's structure — file paths, exports, imports, and dependency edges. Not a single line of your source code ever leaves GitHub. Your IP stays 100% yours.

02
Compatibility

Which AI tools does Contextra work with?

Contextra works with any chat-based AI coding tool, including Claude, GitHub Copilot, Cursor, GPT-4o, and Gemini. It intercepts and enriches the prompt before it reaches the model, so no plugin or extension is required on the AI side.

03
Performance

How much can I actually save on tokens?

In our benchmarks, Contextra reduces token usage by an average of 73%, because it injects only the precise line ranges that are semantically relevant — not whole files, not entire folders. Fewer tokens means lower cost and faster responses.

04
Pricing

What's included in the Free plan?

The Free plan gives you 1 connected repository, up to 20 prompt optimizations per month, and full access to the context-injection engine. It's the best way to evaluate Contextra before committing to a paid tier.

05
Billing

Can I switch between monthly and annual billing?

Yes. You can upgrade, downgrade, or switch billing cycles at any time from your dashboard. Annual plans are billed once per year and save you roughly 17% compared to the monthly equivalent.

06
Plans

Is there a repository limit on paid plans?

Starter allows 2 connected repositories. Pro removes the cap entirely — connect as many repos as your team needs, including monorepos and multi-service architectures.

Pricing

Simple pricing. No surprises.

Start free. Upgrade when you need more. Cancel any time — no contracts, no lock-in.

Free
$0/ forever
Get started
  • 20 optimizations / mo
  • 1 repository
  • All AI tools
  • Basic dependency graph
  • Extension support
  • Chat support
  • Priority support
Starter
$5/ mo

Billed $60/yr

  • 300 optimizations / mo
  • 2 repositories
  • All AI tools
  • Standard dependency graph
  • Extension support
  • Chat support
  • Priority support
ProMost popular
$12/ mo

Billed $144/yr

  • 500 optimizations / mo
  • Unlimited repositories
  • All AI tools
  • Deep dependency graph
  • Extension support
  • Higher context
  • 24x7 chat support
  • Priority support

Building for a larger org?

Custom contracts, volume pricing, on-prem deployment, and compliance support.

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