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Ship a leads agent for a car marketplace after cheap evals

A builder's leads AI agent for a large car marketplace was approved for production after seven rounds of evals that cost under $50 in total.

See pricing pageSeveral weeksAdvancedSource linked

Source

@rav4nn on X · 2026-10-16

Written in our own words. Credit to the original author. Link checked 2026-10-16.

What they did

A builder's leads AI agent for a large car marketplace was approved for production after seven rounds of evals that cost under $50 in total.

Result (as claimed)

Approved for production.

Tools they used

The source does not name specific tools.

Cost: Pricing depends on the tools you pick; check each official pricing page.

Set it up

  1. Pick one goal and metric

    For example replies to outreach, ad ideas per week or landing page conversion.

  2. Set up the tools

    Open the tools you choose. Load your offer, audience and examples of what already works.

  3. Generate, then review

    Have the agent research and draft. You approve every message, post or ad before it goes out.

  4. Measure and iterate

    Track the metric for a week, keep what works and feed the results back into the prompt.

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Goal: Ship a leads agent for a car marketplace after cheap evals
What the original author did: A builder's leads AI agent for a large car marketplace was approved for production after seven rounds of evals that cost under $50 in total.
Reported result (as claimed by the author): Approved for production.
Source: https://x.com/rav4nn/status/2111110205090173168
Tools they used: not named in the source
Category: Marketing & growth

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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