Spend control for AI agent payments

Stop AI agents from overspending on paid APIs.

Attribute every payment to an agent, tool and session. Set budgets, block risky spend before it settles, and reconcile what actually happened — without holding funds or private keys.

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Every payment attributed Blocks spend before settlement Independent reconciliation Never holds funds or keys
app.harpd.com/overview
Today SpendLive USDC volume
Today CallsEvery agent call
Active AgentsYour AI agents
AnomaliesFlagged instantly
Agent Spend (USDC) Tracked in real time
Budget Alert
Per-agent budget alerts
New Endpoint
List endpoints in the Marketplace
Reconciled
Reconciled on-chain
Paid pilot · 14 days · no code changes

From runaway spend to an evidence pack your finance team can sign off.

We connect a Collector or gateway in front of your existing payment path, configure guardrails, and leave you with measured savings — not another dashboard to maintain.

See the pilot plan → Best for teams with live Agent spend or a security review blocking launch.
About this page

How to use this page

  • Skim the hero to understand what Harpd does in one line.
  • Use Start Free to create an account, or Read Docs to self-serve.
  • Follow the spend-control workflow, then open the FAQ for common questions.

What you'll find here

  • A live spend dashboard preview, budget and approval controls, payment reconciliation, and a FAQ.
FinOps + Spend Control for AI Agent Payments

One workflow for every agent payment

Record every payment, assign it to an Agent, Tool, or Session, set the budget, stop overspend before it happens, then reconcile and alert.

Stop runaway agent spend

Agents can call paid APIs faster than your controls can react. Harpd checks every payment before it settles, enforces per-agent budgets, and blocks risky requests.

  • Deny risky requests before payment
  • Budgets by agent and endpoint
  • See every payment status
  • Alerts when spend patterns change

Put a stop to runaway agent spend.

See every payment, set a budget, and block the next expensive mistake. Start free — no credit card required.

Start Free Read Docs

Questions? Talk to our team or join Discord

Frequently asked questions

What is Harpd?
Harpd is spend control for AI agent payments. It decides what an agent may spend, who it may pay, and when a human must approve — without holding funds or private keys.
How does Harpd stop overspending?
Harpd attributes each payment to an agent, tool and session, checks it against policy and budget before settlement, and pauses or blocks requests that exceed your rules.
Can I start with visibility before blocking payments?
Yes. Start in observe-only mode to understand current spend, then enable budgets, approval thresholds and hard stops when the policy is ready.
What happens after a payment?
Harpd independently reconciles the payment result and alerts you when a transaction is missing, failed or does not match the facilitator's status.
Does Harpd hold my money or private keys?
No. Harpd is strictly non-custodial. It observes and reconciles payments but never custodies funds, signs transactions, or stores private keys. Settlement happens on-chain between your agents and the facilitator.
How much does Harpd cost?
There is a free tier with 10,000 events/month and no credit card required. Paid plans scale by event volume — see Pricing.