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Prove a task

Run every candidate model on your task and prove the cheapest one that clears your bar.

1. Describe the task

Give RedCrown a plain-language task and a few input/output examples. It uses these to build a scored experiment.

UI

Open Prove (/). Paste your task description and a few examples, then click Use my data. If you are signed out, you are redirected to log in and then back to Prove.

CLI

Build a dataset from a CSV with your inputs and reference outputs:

redcrown build-dataset --from-csv examples.csv --task summarize --input-col text --reference-col summary --out task.json
MCP

Call scaffold_experiment with a plain-language task and examples to get a validated experiment spec, or pass them directly to prove_task and let it handle scaffolding automatically:

{
  "task": "Summarize a customer support ticket in one sentence.",
  "examples": [
    {"input": "Ticket text here...", "output": "One-sentence summary."}
  ]
}

2. Run and rank

RedCrown fans your task across every candidate model, scores outputs against your examples, and ranks by the cheapest model that clears the quality bar.

UI

After clicking Use my data, Prove runs the experiment automatically and displays the ranked report inline. The winner row is highlighted in green.

CLI
redcrown eval task.json --report-json out.json

The ranked report prints to the terminal. --report-json also writes the full receipts to out.json for sharing or inspection.

MCP

Call prove_task with your task and examples. It runs the full experiment and returns the ranked winner and savings in one call:

{
  "task": "Summarize a customer support ticket in one sentence.",
  "examples": [
    {"input": "Ticket text here...", "output": "One-sentence summary."}
  ]
}

3. Share

Mint a shareable, no-login proof link so stakeholders can read the ranked report and receipts without an account.

UI

On the ranked report, click Share proof. RedCrown mints a public link at app.redcrown.ai/proof/<token>.

CLI
redcrown push out.json --proof-link

The proof URL is printed to the terminal after a successful push.

MCP

The prove_task response includes a proof_url field. Pass it to stakeholders directly; no additional call is needed.

Last verified .