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logs.so × Codex

the part your builder can't show you.Instrument your whole codebase with one Codex prompt.

You ship with Codex. logs.so tells you if it actually works in production — sales, signups, and every failure path your tests miss.

Full access · No credit card

How it works

three steps. one of them is pasting.

Step 1

Sign up and grab your keys

Create a free account — 7-day free trial - no credit card. Onboarding hands you an API key and workspace ID.

Step 2

Paste the prompt into Codex

Your agent creates the logging helper and instruments every success and failure path. You write nothing.

Step 3

Watch the feed

Sales, signups, and failures stream in live, on desktop and your phone.

The prompt

copy it, paste it, done.

Drop it into Codex and let your agent do the wiring, failure paths included.

Add server-side event logging to this app using logs.so.

1. First, study what this app actually does. Read the codebase and map its real
   features and the moments that matter in THIS product — not a generic checklist.
   Every app is different: a photo tool cares about renders and exports, a
   marketplace about listings and orders, an AI app about generations and credits.
   Write a short list of the events worth knowing about before you log anything.
   Signups and payments are the baseline, not the whole story.

2. Send events by POSTing JSON to https://api.logs.so/v2/log with header
   Authorization: LOGS_SO_API_KEY (read from an environment variable — never
   hardcode it, never expose it to the browser).
   Body: { "project": "<WORKSPACE_ID>", "channel": "<channel>", "event": "<short title>",
           "description": "<details>", "user_id": "<user email/id>",
           "tags": { <relevant ids/amounts> } }

3. Create one small server-side helper (e.g. lib/logsso.ts) wrapping this call.
   It must never throw, never block the response (fire-and-forget), and no-op
   when LOGS_SO_API_KEY is unset.

4. Instrument the events you found in step 1, SERVER-SIDE ONLY:
   ✅ Product moments → channel "product": the app's own key features being used,
      named in the product's own language. Plus signups → "signups" and
      payments/subscriptions → "revenue".
   ❌ Failures — these matter most → channel "failures": every catch block in API
      routes and server actions, webhook handlers that fail or fail signature
      verification, declined payments, cron jobs that throw or don't complete,
      failed external API calls.

5. Prefix every event name with an emoji: 💰 revenue, ✅ success, ❌ failure, ⚠️ warning.

6. Always set "user_id" to the user's email or id — that's how the feed ties each
   event to a person. Put amounts, plan names, and object ids in tags. Just don't
   log secrets, passwords, tokens, or card numbers.

When done, list every file you changed and every event now tracked.

Note: Run this inside the repo with Codex: sweep existing catch blocks, webhook handlers, and cron jobs and instrument them all.

The feed

then your feed tells the whole story.

Not just the wins. The failed payment and the dead webhook too.

New sale

revenuejust now

richard@piedpiper.com just upgraded.

plan:Proamount:$49

New signup

signupsjust now

mark@thefacebook.com created an account.

source:landing

Payment failed

revenuejust now

jjj@dailybugle.com, card declined.

reason:card_declined

Webhook failed

failuresjust now

stripe, timeout after 10s.

source:stripe

Questions

good questions.

How is this different from my error tracker?

It isn't stack traces — it's one readable feed of business events: payments, signups, the webhook that failed. What happened, not just what crashed.

Where does my API key live?

In your .env (and your host’s environment variables in production). The prompt tells Codex to never hardcode or expose it.

Will this slow my app down?

No. Events are fire-and-forget: the helper never blocks a response and silently no-ops if the key is missing.

know your Codex app actually works.

7 days full access. No credit card. One prompt to install.

Also building with something else? It's just HTTP, see the docs

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Server-side truth for your app.

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