Tools for running agents

Small tools for people who let agents run.

Two of these came out of running coding agents unattended for months and getting burned in the usual ways. They're cheap, they're plain files you can read, and they do one thing each.

Both tools · best value

Operator Bundle

Find out what your setup is costing you on every session, then make it safe to leave running. The two go together.

$48$39

Guardrails

Claude Code Autonomy Pack

Every other kit sells speed. This one is about whether what the agent told you is true.

  • Re-states the no-fabrication rule every turn, so it still holds at turn 200
  • Writes what a session learned back into the repo, and reads it in next time
  • Blocks recursive delete, hard reset, force push and publish outright
  • Shell and PowerShell, so it behaves the same on either
$29

Measurement

session-tax

My own sessions open at 51,671 tokens before I type anything. I didn't know that until I measured it.

  • What every session costs before any work happens
  • How much of that describes skills that have never once fired
  • Everything installed, against how often it really gets used
  • Reads your own files, sends nothing anywhere
$19

Source kit

Business-Day API Source Kit

Holiday-aware date maths and trade settlement dates, as code you host yourself instead of a subscription you rent.

  • 17 built-in calendars, including two market ones with half-days
  • Every answer explains which days it skipped and why
  • 22 tests, an OpenAPI spec, and examples in three languages
  • Deploys free; no upstream holiday service to pay for
$49

For makers

3D Print Pricing Kit

Most people selling prints are undercharging and cannot see where it went. Usually it is their own time and the prints that failed.

  • A spreadsheet that prices a job from your real numbers, not a rule of thumb
  • Machine wear and a failure buffer built in, because someone pays for those
  • A short guide on each number and where to find it
  • A one-page checklist for the wall by the printer
$6

One seat per developer

Use it on your own machines, including for client work. Change it however you like. Just don't republish it.

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Refunds

If it doesn't do what the page says it does, email me and I'll refund you. No form to fill in.