A hard budget ceiling for every agent task. Cross-provider, tool spend included, no proxy in your request path. Blocked before the first token, not after the bill arrives.
free tier · 1,000 preflight calls/mo · no card · key in 30 seconds
# 3 lines. That's it. from agentbill import AgentBillClient client = AgentBillClient(api_key="agb_your_key") # This job dies at $5, across every call and tool it makes check = client.preflight(agent_id="researcher", task_ref="job-142", budget=5.00) if not check.approved: raise Exception(check.reason) >>> run 47 of the retry loop: blocked: task_ceiling_exceeded ($5.00 ceiling)
"The moment you're using Stripe as your safety net, you've already lost the run."
scarlett1908, r/LangChain"Hard spend caps and kill switches need to be table stakes, not edge cases."
r/AI_Agents"Agents fail quietly. By spending your money while you sleep."
r/AI_Agents, 268↑ threadOne job, many calls, one budget. "This task dies at $5." Provider spend caps stop at monthly org totals; your ceiling stops the run that's burning money right now.
One ceiling across OpenAI, Anthropic, your own GPU, and every tool call in the run. Not per vendor. Per job. With per-agent attribution for every dollar.
An SDK call, not a gateway. Nothing to route your traffic through, nothing to deploy, nothing to compromise. The ceiling is something your tools consult.
Free tier. No card. If this page took you longer to read than the integration takes, we did our job.
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