From a recorded Claude Code build

Claude Code missed 12 issues in its own plan. Here’s how to review yours with MegaLens.

No code to write. Works inside the Claude Code or Cursor chat you already use.

Free account. Your first review is free, no card needed.

What the independent reviewers caught

Claude Code reads findings like these and decides what to fix. The small line on each card is the finding exactly as it was recorded.

CriticalOperational
The spending limit could not actually stop spending.
As recorded: No actual USD cost parsing from response.usage — cost cap is unenforceable
Caught by: MegaLens only
CriticalOperational
Losing its database would make it redo drafts for old emails, in bulk.
As recorded: Bootstrap is :unread query + no gmail.modify — DB loss causes mass re-drafting of old mail
Caught by: MegaLens only
HighSecurity
An email's own subject line could slip instructions to the AI.
As recorded: Email headers (subject, from, date) injected raw into LLM prompt — no sanitization
Caught by: Both (pre-audit missed headers)
HighOperational
A crash at the wrong moment would create duplicate drafts.
As recorded: Draft-create → mark-processed crash window — duplicate drafts, no atomic guard
Caught by: MegaLens only

From a recorded build. Its plan review cost $1.25 and its mid-build code review $1.23. Read the full case study.

From the recorded build

Severity table from the plan review of the recorded build, showing findings 6 to 15 with severity, category and the finding text.

Findings 6 to 15 of the plan review, as they came back in the recorded Claude Code build.

Three steps

Create a free account

Connect it to your coding tool

One command, pasted into the terminal on the computer where you use Claude Code. This step needs that computer, not your phone.

Paste into your terminal

npx megalens-mcp setup

It finds Claude Code, asks for your connection token, which you copy from your MegaLens settings, and does the setup for you. Then restart Claude Code and type run megalens_status in the chat. A reply means you are connected.

Cursor and Codex each have their own short setup guide: Cursor · Codex

Using ChatGPT or Claude.ai in the browser? You need no command. Add MegaLens there as a connector and sign in: see the steps.

Ask for a review in plain English

Type either of these into your chat. Your coding tool takes it from there.

“Review this plan with MegaLens before we build”

“Run a MegaLens security audit on what we just built”

Example of what comes back in your chat

> Review this plan with MegaLens before we build

megalens_debate · done

Independent reviewers returned findings, including:

[Critical] No actual USD cost parsing from response.usage — cost cap is unenforceable

[High] Email headers (subject, from, date) injected raw into LLM prompt — no sanitization

I checked these against the plan. Both hold up. Updating the plan before we build.

Shown as text, not a screenshot. The two findings are real, from the recorded build.

What happens next

The findings come back into your chat.
Claude Code reads them and decides what to fix.
You stay in the same conversation.

You do not need to leave your IDE.

Findings like these, on your own project, in the chat you already use.

Try it free on your project

First review free. Then $5 credit for $0.50, or pick a plan.

Questions

Do I need to know how to code?

No. You run one setup command, then ask for reviews in plain English inside the chat you already use. Your coding tool reads the findings and handles the fixes.

What is an MCP?

A small add-on that lets your coding tool talk to an outside service. The setup command in step 2 installs it for you, and after that you just type normal English.

How can I try it?

Create a free account and run your first review with no card and no API key. It covers up to 35,000 tokens of input, which is a plan or a few files. After that, verify a card for $0.50 and get $5 in credit, or pick a plan with reviews included.

Will it send my code somewhere?

Yes. The code you ask about is sent to the AI models that review it. Details are in the privacy policy.

Does it replace Claude Code?

No. It adds independent reviewers to it. Claude Code still writes the code and still decides which findings to act on.

What does it cost after the free review?

Two ways to pay.

A plan: Plus and Pro include a monthly allowance of reviews, with model usage included, from $19 a month. MegaLens selects up to four reviewing models.

Pay as you go: you keep a balance with MegaLens and each review is charged from it, never more than $3 for one review. In a recorded Claude Code build, the plan review cost $1.25 and the mid-build code review $1.23. Your free review comes first, and $5 in credit covers about four reviews that size.

Full details on the pricing page.

To see it for yourself, the case study has every finding from the recorded build and what Claude rejected. Read the recorded build