Agent farming free tier: when AI scripts burn your credits

Agent farming free tier is what happens when the farm is no longer a brittle script. An AI agent can read your docs, complete signup, call your API, and adapt when you add friction. Searches for agent farming free tier and prevent AI SaaS credit abuse usually mean the same thing: automation that looks like a developer until the free grant is gone.

Bot management still helps against casual crawlers. It does not decide whether this signup deserves dollars of compute. Agents that pass Turnstile and use residential proxies still burn the free tier.

What changes with agents

• Signup and integration can run without a human in the loop
• Friction that worked once gets solved or rerouted on the next attempt
• Cost per farmed account can exceed the expected value of a real trial
• Your conversion metrics fill with "users" who were never going to pay

Price the free grant

Keep CAPTCHA and bot scores as inputs. Add a trust decision before credits or an API key leave: allow, challenge, or deny, fail closed on timeout, and join later outcomes (burn, conversion, ban) to the original event. That is how you price agent farming instead of racing its CAPTCHA solvers.

Chitmark implements verify, feedback, and challenge for exactly these grants. Start from the API abuse guide, the allow-challenge-deny signup explainer, or the playground.