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Sonah
Reviews what your coding agent did, not just the diff
Coding agents rewrite code you never asked them to touch, and the tests still pass. Sonah reads the agent’s Claude Code or Codex session along with the code, then shows on one page: whether each ask was done, what the agent decided on its own, which of its claims its own results contradict, and what is wrong in the code. Every quote is checked word for word. Runs locally through your own Claude login. No account, no telemetry. Free for individuals.
I build most of my software with coding agents now. I give them the task and the architecture and let them run. A few times, when I pushed an agent to improve a feature or squeeze out performance, it rewrote core code I never wanted touched, and the tests still passed. The diff showed what changed, but not why.
I wanted the agent’s decisions and assumptions put in front of me, so I could judge the work without reading hours of session. So I built Sonah.
What it does: it reads the agent’s recorded session along with the code, and gives you one page ordered by what needs your attention:
Did it do what you asked? Each ask is marked done, partly done, not done or not checked.
What did it decide on its own? Decisions and assumptions, for you to confirm or overrule.
Is “done” true? Claims the agent’s own results contradict, like “all tests pass” after a failing test.
What’s wrong in the code? A read-only code review agent checks the change against your asks and the agent’s claims.
Every quote is checked word for word against the session or the code. There’s no score and no verdict; you make the call.
How it runs: it’s a CLI that runs locally through your own Claude Code login, so it uses the plan you already have. No account, no telemetry. It writes an HTML page for you and a Markdown report you can drop into a PR.
npm install -g getsonah
sonah doctor
cd your-project && sonah review --format html --output ~/review.html
I’d love to hear what you think, especially about the decisions it flags, and what it should catch that it doesn’t. I’m here all day to answer questions.
The part that stands out to me is surfacing the agent's assumptions instead of just the diff — that's usually where the real review time goes. I'm curious how you handle a session where the agent changes its mind mid-task: do earlier assumptions stay visible, or does the review only reflect the final run?
About Sonah on Product Hunt
“Reviews what your coding agent did, not just the diff”
Sonah was submitted on Product Hunt and earned 10 upvotes and 2 comments, placing #30 on the daily leaderboard. Coding agents rewrite code you never asked them to touch, and the tests still pass. Sonah reads the agent’s Claude Code or Codex session along with the code, then shows on one page: whether each ask was done, what the agent decided on its own, which of its claims its own results contradict, and what is wrong in the code. Every quote is checked word for word. Runs locally through your own Claude login. No account, no telemetry. Free for individuals.
Sonah was featured in Software Engineering (43.3k followers), Developer Tools (523.1k followers) and GitHub (41.5k followers) on Product Hunt. Together, these topics include over 136.4k products, making this a competitive space to launch in.
Who hunted Sonah?
Sonah was hunted by Abhinav Soni. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Abhinav Soni
Hey Product Hunt 👋
I build most of my software with coding agents now. I give them the task and the architecture and let them run. A few times, when I pushed an agent to improve a feature or squeeze out performance, it rewrote core code I never wanted touched, and the tests still passed. The diff showed what changed, but not why.
I wanted the agent’s decisions and assumptions put in front of me, so I could judge the work without reading hours of session. So I built Sonah.
What it does: it reads the agent’s recorded session along with the code, and gives you one page ordered by what needs your attention:
Did it do what you asked? Each ask is marked done, partly done, not done or not checked.
What did it decide on its own? Decisions and assumptions, for you to confirm or overrule.
Is “done” true? Claims the agent’s own results contradict, like “all tests pass” after a failing test.
What’s wrong in the code? A read-only code review agent checks the change against your asks and the agent’s claims.
Every quote is checked word for word against the session or the code. There’s no score and no verdict; you make the call.
How it runs: it’s a CLI that runs locally through your own Claude Code login, so it uses the plan you already have. No account, no telemetry. It writes an HTML page for you and a Markdown report you can drop into a PR.
I’d love to hear what you think, especially about the decisions it flags, and what it should catch that it doesn’t. I’m here all day to answer questions.