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Documentation.

Connect your agent to a twin, write the rules that decide a pass, read the verdict and reset. Start with the quickstart.

Sample content. On the live site this section is written in the GitHub repository and published automatically, so it always matches the product. Names and code below show the shape, and the final SDK may differ.

Quickstart: your first graded run

Five steps, about five minutes. You need an agent that speaks MCP or REST and a token from your invite.

  1. 1Point your agent at a twin

    Replace the live tool’s address with the twin’s in your agent’s MCP config. Nothing else in your agent changes.

    {
    "mcpServers": {
    "salesforce": {
    "type": "http",
    "url": "<twin MCP endpoint>",
    "headers": { "Authorization": "Bearer <token>" }
    }
    }
    }

  2. 2Choose where every run starts

    A world is the data inside the twin. Pick a curated one, build one from your records, or describe it in a sentence.

  3. 3Write the rules

    Say what the agent must do and what it must never do. Rules are checked against what changed in the twin.

    # sample shape
    task: Mark the Acme renewal as won and email the buyer
    must:
    - opportunity "Acme renewal" has stage "Closed Won"
    - one email was sent to the buyer
    never:
    - the amount on any opportunity changes

  4. 4Run it and read the verdict

    Each rule comes back as pass or fail, with the call and the change that decided it.

  5. 5Reset and run again

    One call puts the twin back to its starting state. Run the scenario twenty times to get a pass rate you can compare between versions.

Four words you will see everywhere

Twin

A stateful copy of a real tool, built for testing agents. It runs on its own data and resets in one call.

World

The people, records and history inside a twin. Every run starts from the same one.

Condition

A failure set on purpose, like an expired token or a missing record.

Reset

Resetting every twin to the starting state so the next run is comparable.

Prompt for your coding agent

Paste this into Claude Code, Cursor or any coding agent to set up the first run for you.

Set up DrizzLabs for this project.
1. Add the Salesforce twin as an MCP server using the endpoint and token in my invite.
2. Create a scenario file with the task, the rules it must follow and the rules it must never break.
3. Run the scenario 20 times, resetting the twin between runs.
4. Report the pass rate and the rule that failed most often.