Codex use cases

Real things people get done with Codex — A terminal-first agent that builds, launches and reports on your outreach. — plus the outreach jobs you can hand to it in WarmySender, where the scheduler paces every action inside safe limits.

Categories: Outreach, LinkedIn, Deliverability, Money, Productivity, Setup, Coding, Research

What people do with Codex

Turned years of saved posts into a searchable diary

Productivity · @pritopian ·

Built an agent overnight that went through a huge pile of saved social posts and turned them into a searchable personal archive.

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Found a real auth flaw in under two minutes

Coding · @yeswehack ·

Pointed the agent at a target with no map and it located an authentication flaw and proved the access path in well under two minutes.

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A repeatable weekly outbound run

Outreach · @warmysender

Same prompt every Monday: new list in, verified, enrolled, campaign started.

Every Monday, verify the new contacts I added, enroll the valid ones in "Weekly outbound", and start the campaign if it is paused.

Set this up in WarmySender

Sent the agent off to earn five dollars on its own

Money · @ChrisGPT ·

Gave the agent a single goal of earning a small amount of money and let it go find and complete the work unattended.

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Spotted a new memory system hiding in the commits

Research · @TokenGremlin ·

Read through recent public code changes and worked out that a second-generation memory system is being built behind the current default.

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Keep an eye on bounce rate without a dashboard

Deliverability · @warmysender

Codex reads the numbers and pauses on your rule — it can never raise a sending limit.

Check bounce rate per campaign each evening, pause anything above 4%, and tell me which lists the bounces came from.

Set this up in WarmySender

A phone widget for checking your agent's remaining usage

Productivity · @arvivares ·

Built and published a free open-source phone widget that shows how much of the agent allowance is left at a glance.

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Twelve habits that make an agent plan last longer

Setup · @kloss_xyz ·

Practical tips for stretching a usage allowance, starting with writing the plan first and having the agent audit it before any building.

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Add a LinkedIn touch to an email campaign

LinkedIn · @warmysender

Codex builds the matching LinkedIn campaign and enrolls the same people once.

For everyone in my "Devtools Q4" email campaign, create a LinkedIn campaign with a connection request and one follow-up, and enroll them once.

Set this up in WarmySender

Running two vendors' models against each other

Productivity · @daniel_mac8 ·

Gets more out of both subscriptions by having frontier models from different vendors check and challenge each other's work on the same task.

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Benchmarked reasoning against thirty obscure games

Research · @FakePsyho ·

Ran a structured evaluation of agent reasoning across roughly thirty little-known puzzle games rather than trusting a single benchmark number.

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Recovered a lost conversation from local session files

Productivity · @lIlIIllIIlIIlII ·

When a chat history vanished mid-task, pointed the agent at the local session logs and had it reconstruct what was said.

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One agent wrote the release, another tried to break it

Coding · @indelibleBSV ·

Paired two machines for a release: one wrote the code while the other used the shipped product like a customer all night trying to break it.

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Hand it a repo, close the laptop, come back to a fix

Coding · @atomicbot_ai ·

Ran the agent continuously in the cloud against a repository and it surfaced a long-standing bug nobody on the team had answered.

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Eighteen unattended minutes reading a whole codebase

Coding · @ziwenxu_ ·

Let the agent read an entire repository unattended and it came back with three real findings, including an install path nobody had noticed.

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Running outreach with Codex

Connected to WarmySender, Codex can create, launch and manage campaigns on every channel, create and enroll prospects, verify email addresses, search and save lead lists, configure warmup and read stats — in plain language. It never sends a message itself and can never raise a limit. WarmySender's scheduler paces every action inside safe limits and a gradual ramp; connecting and disconnecting accounts stays in the app.

Set up Codex on the AI Agents hub.

Last refreshed: 2026-09-09