👤 Human-in-the-Loop

Human-in-the-Loop Approval for AI Agents

Pause agents. Let humans decide. Resume on approval.

What it does

Create a checkpoint that pauses your agent mid-task. A human reviews the proposed action, approves or rejects it, and the agent resumes or stops.

Why agents need this

•Autonomous agents can take irreversible actions
•Regulatory compliance requires human oversight for high-stakes decisions
•Agent confidence is probabilistic and some decisions need human verification
•Production deployments need guardrails before agents interact with real users

Get started in 30 seconds

One API call. No SDK. No configuration.

cURL

curl -X POST https://www.agent-utils.com/v1/checkpoints \
  -H "x-agent-id: finance-bot" -H "x-api-key: agutil_agt_…" \
  -H "content-type: application/json" \
  -d '{
    "title": "Approve wire transfer?",
    "callback_url": "https://your-server.com/resume",
    "timeout_action": "auto_reject",
    "timeout_seconds": 3600
  }'

Python

import requests

resp = requests.post(
    "https://www.agent-utils.com/v1/checkpoints",
    headers={
        "x-agent-id": "finance-bot",
        "x-api-key": "agutil_agt_…",
        "content-type": "application/json",
    },
    json={
        "title": "Approve wire transfer?",
        "callback_url": "https://your-server.com/resume",
        "timeout_action": "auto_reject",
        "timeout_seconds": 3600,
    },
)
checkpoint_id = resp.json()["data"]["id"]

JavaScript

const res = await fetch("https://www.agent-utils.com/v1/checkpoints", {
  method: "POST",
  headers: {
    "x-agent-id": "finance-bot",
    "x-api-key": "agutil_agt_…",
    "content-type": "application/json",
  },
  body: JSON.stringify({
    title: "Approve wire transfer?",
    callback_url: "https://your-server.com/resume",
    timeout_action: "auto_reject",
    timeout_seconds: 3600,
  }),
});
const { data } = await res.json();

Use cases

Financial transactions

Agent wants to execute a transfer and pauses for human approval of amount and recipient

Content publishing

Agent drafted a blog post and pauses for editorial review before publishing

Data deletion

Agent identified records to delete and pauses for human to confirm which ones

Email sending

Agent composed an email to a customer and pauses for manager approval

AgentUtils vs. alternatives

Traditional tools like LangGraph Human-in-the-Loop, Inkeep, Humanloop require SDK integration, credential management, and infrastructure setup. AgentUtils replaces all of that with a single HTTP call.

	AgentUtils	Alternatives
Setup time	30 seconds	Hours to days
SDK required	No (REST API)	Yes
Credentials to manage	1 API key	Multiple keys/tokens
Infrastructure	Zero-config	Provision + configure

Related tools

📬 Dead Letter Queue

Catch, inspect, and retry failed agent tasks.

📜 Audit Log

Append-only, server-timestamped audit trail for every agent action.

All AgentUtils tools

🗃️ KV Store 📜 Audit Log 📬 Dead Letter Queue 👤 Human-in-the-Loop

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500 free API calls per month. No credit card required.

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