Observability for AI agents

Every agent decision,
visible in one place.

Drop in our SDK. See every tool call, every LLM response, and every step your agents take—then set guardrails and ship with confidence.

Free to start. Node.js SDK is open source. [email protected]

agent timeline
RUN-1847guarded
LLM Requestgpt-4o · prompt 2,340 tok
LLM Response1,247 tokens · 1.73s
Tool Calldb.query({ user_id: '***' })
Guardrailpolicy check · reviewed
CompleteRun finished successfully
Tokens3,587
Cost$0.004
Latency1.92s
VerdictGuarded

Get started in minutes

$ npm install @guardonic/sdk

import { Guardonic } from "@guardonic/sdk"
const g = new Guardonic({ apiKey, baseUrl })
await g.ingest({ agent, events })

The Node.js SDK is open source (MIT). The hosted API and dashboard are proprietary; integrate from Python or other languages via our HTTP API. Node SDK documentation.

How it works

Instrument, observe, and control AI agents in production

01

Instrument

Drop our SDK into your agent code. Every tool call, every LLM response, every decision — captured with zero performance overhead.

02

Observe

See exactly what happened in every run. Inputs, reasoning, actions, outputs. Searchable, filterable, replayable.

03

Control

Cost caps, action allowlists, content policies. Enforced at runtime. Kill a run mid-flight if you need to.

Every AI agent in production is a black box. Most teams find out something went wrong from their customers.

01

An agent calls an API it was never supposed to touch. You hear about it from a customer ticket.

02

A workflow burns through your monthly budget in six hours. No one set a limit.

03

Compliance asks what your agent told a user last Tuesday. There are no logs.

Platform

Everything you need to trust your agents in production.

Agent timeline

Every run broken down step by step. What the agent saw, decided, and did.

Simulation sandbox

Coming soon

Replay past runs with different inputs. Test before you ship.

Guardrails engine

Cost caps, allowlists, content policies. Enforced at runtime, not after.

Alerts

Coming soon

Slack, email, webhook. Know in seconds when something goes wrong.

Node SDKOpen source (MIT)
< 2msOverhead
PlatformProprietary cloud
REST APIAny language
Free tier1K runs/mo

Start building with Guardonic.

Get early access to the SDK and dashboard. Free for up to 1,000 agent runs per month.

or email us at [email protected]. Investing or partnerships? [email protected] — see also Contact.