grainulator

Evidence and checks for AI agents

Use your AI.
Check its work.

Grainulator works with Claude Code and Codex. It keeps the findings and sources your agent records together, flags gaps in evidence, and helps you check results before sharing.

See how the check works

See what a check catches

Good yesterday.
Still good today?

Recorded check

A report is checked and ready. Later, a supporting test fails. Grainulator spots the change and stops the old report from being shared.

Follow the evidence

A real Grainulator check using sample data. Choose a step to see what changed.

Example release reportLoading example

Checking the report…

This example uses a saved result. It makes no new AI request.

Latest test result

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See the exact evidence record
Checked version
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Current version
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This check catches changed evidence. Your team still decides whether the release is ready.

Download the full record

How it works

Keep findings and sources together.

Grainulator stores the findings and source references your agent records, flags gaps, and helps your agent address failed checks.

  1. 01

    Start with your task

    Give your agent the question, background, and goal.

  2. 02

    Check what matters

    Choose a test or review step. See what passed, and check the evidence behind conflicting findings.

  3. 03

    Try again with feedback

    Set up a check-and-retry loop to send failed checks back to your agent, with a limit on attempts.

From example to real work

Use Grainulator with your agent.

Choose your agent to see how to set up Grainulator in your project.

Claude CodeSee setup stepsAdd Grainulator’s research and checking tools to Claude Code. CodexSee setup stepsAdd Grainulator’s research and checking tools to Codex.

Using another agent? See other connection options ↗

What this example shows

The saved record shows Grainulator catching a change after a report was checked. It stops the old check from being used. It does not decide whether the release is safe.

Grainulator helps you inspect and check AI work. Evaluations have not established a general improvement in accuracy or speed.

To repeat the example from the source code, run node scripts/record-handoff.mjs. The technical contract is in docs/ADAPTERS.md.