Live observability for AI agents, directly in your editor. See active runs, token usage, cost, and latency without leaving VS Code.

Features

Status Bar

A live indicator in the bottom-right of your editor updates every 30 seconds:

⚡ Sensu  ▶ 3  ⌨ 2.4K/m  $0.12  ⚠ 1
           │    │          │      └─ errors
           │    │          └─ cost today
           │    └─ tokens per minute
           └─ active runs

Click it to open your Sensu dashboard in the browser.

A collapsible panel in the Explorer sidebar with two sections:

Live

Metric	Description
Active runs	Runs currently in progress across all agents
Tokens / min	Rolling token throughput
Cost today	Cumulative LLM spend since midnight
Avg latency	Mean time-to-completion across recent LLM calls
Errors today	Failed runs and tool errors

Plan & Quota

Metric	Description
Runs used	Agent runs observed this billing period
Run limit	Monthly run cap for your plan
Usage	Percentage of quota consumed
Resets	Date the quota resets

Commands

Command	Description
`Sensu: Open Dashboard in Browser`	Opens sensu-ai.com in your default browser
`Sensu: Configure API Key`	Prompts for your API key and saves it to settings
`Sensu: Refresh Metrics`	Manually triggers a metrics fetch

Getting Started

Install the extension from the VS Code Marketplace
Run Sensu: Configure API Key from the command palette (⌘⇧P / Ctrl+Shift+P)
Paste your API key — create one at sensu-ai.com/settings
Metrics appear in the status bar and sidebar immediately

Configuration

All settings are under the sensu namespace in VS Code settings:

Setting	Default	Description
`sensu.apiKey`	`""`	Your Sensu API key (`sk-...`)
`sensu.apiUrl`	`https://api.sensu-ai.com`	API base URL — change only if self-hosting
`sensu.dashboardUrl`	`https://sensu-ai.com`	URL opened by "Open Dashboard"
`sensu.pollIntervalSeconds`	`30`	How often metrics refresh (minimum: 10)

You can set these in your settings.json directly:

{
  "sensu.apiKey": "sk-your-key-here",
  "sensu.pollIntervalSeconds": 15
}

Integrating your agents

The extension reads from the Sensu API — your agents need to send telemetry for data to appear.

TypeScript SDK

npm install @sensu-ai/sdk

import { SensuClient } from '@sensu-ai/sdk';

const sensu = new SensuClient({ apiKey: process.env.SENSU_API_KEY });
const run = sensu.startRun({ agentId: 'my-agent' });
await run.end('completed');

LangChain

import { SensuCallbackHandler } from '@sensu-ai/sdk/integrations/langchain';

const handler = new SensuCallbackHandler({ apiKey: process.env.SENSU_API_KEY });
await chain.invoke({ input }, { callbacks: [handler] });

REST API

curl -X POST https://api.sensu-ai.com/api/v1/events \
  -H "X-API-Key: $SENSU_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type":"llm.request.completed","agentId":"my-agent","tokensIn":512,"tokensOut":128}'

Full API reference: sensu-ai.com/docs