@agentskit/runtime

@agentskit/runtime is where AgentsKit stops being “a chat integration” and becomes an agent system. This package owns the multi-step loop that lets a model inspect, act, reflect, and continue.

#When to reach for it

• You want an agent without a UI.
• You need durable execution (resume after a crash).
• You want ready-made multi-agent topologies.
• You want to race adapters (speculate) or run on cron / webhooks.

#Best fit

• Start here when the task is more than one model call.
• Pair with @agentskit/tools when the model needs to do work in the world.
• Pair with @agentskit/memory when context needs to persist across runs.
• Pair with @agentskit/observability before trusting the system in production.

#Install

npm install @agentskit/runtime @agentskit/adapters

#Hello world

import { createRuntime } from '@agentskit/runtime'
import { anthropic } from '@agentskit/adapters'

const runtime = createRuntime({
  adapter: anthropic({ apiKey: process.env.ANTHROPIC_API_KEY!, model: 'claude-sonnet-4-6' }),
})

const result = await runtime.run('Summarize the quarterly report.')
console.log(result.content)

That one run() call is the center of the agent stack. Everything else in the ecosystem layers into or around it.

#Surface

• createRuntime(config) — headless agent with tools / memory / skills / observers.
• createSharedContext — typed context across tools.
• createDurableRunner + createInMemoryStepLog / createFileStepLog — Temporal-style step log.
• supervisor · swarm · hierarchical · blackboard — multi-agent topologies.
• speculate — race adapters, abort losers.
• createCronScheduler + createWebhookHandler — background agents.

#Recipes

• Durable execution
• Multi-agent topologies
• Speculative execution
• Background agents
• Research team

#Stability

• Version: 0.6.1
• Tier: beta
• Contract: evolving
• Roadmap: see packages roadmap for what this package needs to reach v1.0.

#Related

• Concepts: Runtime
• Agents (deep dive)
• Build your first agent
• For agents: runtime

#Source

npm: @agentskit/runtime · repo: packages/runtime