AI Agent Observability

See every move your AI agents make.

Log every LLM call, tool use, and action your agents take. Get alerted when something looks wrong — before your users do.

No credit card required · Free tier available

Works withLangChainOpenAIAnthropicCrewAICustom agents
Platform

Everything your team needs to trust AI agents in production.

Full visibility into every agent action

Every LLM call, tool execution, and agent action logged in real time. REST API or one-line SDK — Node.js and Python both supported.

Automatic threat detection, no config required

11 detection rules across prompt injection, data exfiltration, PII exposure, and secret leakage. Scores are probabilistic — no alert storms.

Get notified before your users notice

High and critical events surface as in-app alerts with Slack and webhook delivery. Configurable threshold so you tune sensitivity, not noise.

Works for teams, not just solo devs

Organization isolation with role-based access (admin, member, viewer). Invite teammates, switch orgs, manage API keys per environment.

How it works

Three steps to full visibility.

1
Instrument

Add the SDK to your agent. One line of code. Works with LangChain, OpenAI, Anthropic, or raw HTTP.

2
Monitor

Argus captures every event, scores risk, and chains tamper-evident audit hashes in real time.

3
Act

Dismiss alerts, fix the agent, or export the immutable event chain to share with your security team or auditor.

Pricing

Start free. Scale when you need to.

Your event data is yours — retained for your configured period, exportable at any time, never used to train models.

Free
$0
forever
·50K events/month
·14-day retention
·10 AI analyses/month
·Manual analysis only
Get started free →
Most popular
Pro
$49
per month
·1M events/month
·90-day retention
·5,000 AI analyses/month
·Automatic risk analysis
Start Pro →
Enterprise
Custom
contact us
·Unlimited events
·Unlimited retention
·Unlimited AI analyses
·Automatic risk analysis
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Integration

Instrument in minutes.

Drop the SDK into your existing agent code. Works with LangChain, OpenAI, Anthropic, and raw HTTP calls.

import { ArgusClient } from "argus-sdk";

const argus = new ArgusClient({
  apiKey: "sk_live_...",
  actorId: "my-agent",
});

await argus.llmCall({
  inputText: "Analyze this contract",
  outputText: "The contract includes...",
  inputTokens: 1024,
  outputTokens: 256,
});
// Risk scored + hashed in < 50ms
FAQ

Common questions.

What kinds of AI agents does Argus support?+

Any agent that makes LLM calls or takes tool/action steps — LangChain, OpenAI Agents SDK, Anthropic Claude, CrewAI, AutoGen, or custom pipelines. If it can make an HTTP request, it can send events to Argus.

How does risk scoring work?+

Argus applies 11 probabilistic detection rules across four categories: input/output content, action type, token usage, and workflow patterns. Scores are combined using 1−∏(1−wᵢ) to prevent saturation — so many small signals don't automatically create a false critical alert.

What is a workflow escalation alert?+

When multiple correlated events (sharing a correlationId) show increasing risk scores over the course of a single agent run, Argus flags it as an escalating workflow. This catches multi-step attacks that no single event would trigger on its own.

Does Argus store the content of my LLM calls?+

Yes — input and output text are stored to power risk analysis and audit review. You can enable PII redaction on ingestion, set a retention period (default 90 days), and trigger GDPR erasure via the API.

How quickly are events scored and alerted?+

Risk scoring runs synchronously at ingestion in under 50ms. Alert creation and Slack/webhook delivery happen asynchronously and typically complete within a few seconds.

Can I add custom detection rules?+

Yes. The settings page lets you define custom keywords (e.g. wire_transfer, ssn_lookup). Any event whose input or output contains a match gets an additional risk score boost. You can also tune the global alert threshold.

Is there a free plan?+

Yes — the free plan includes 10,000 events per month, 30-day retention, and 1 seat. No credit card required to get started.

How do I instrument my agent?+

Install the SDK (npm install argus-agent-sdk or pip install argus-agent-sdk), create an API key in the dashboard, and wrap your LLM calls. Most integrations take under 10 minutes.

Ready to secure your AI agents?

Get started in minutes. No infrastructure to manage.

Get started free →