Claude Managed Agents - 🚄 LiteLLM Agent Platform

Claude Managed Agents is Anthropic’s hosted agent runtime — the platform proxies agent creation, session management, and event streaming through your LiteLLM gateway so your team never touches Anthropic credentials directly.

Prerequisites

LiteLLM Agent Platform running (docker compose up or deployed)
Anthropic API key

1. Add your Anthropic API key

Open Settings → Credentials in the UI and add your Anthropic API key. The platform stores it encrypted and injects it at the wire level. Or via the API:

curl -X PUT $LAP_URL/api/agent-runtimes/claude_managed_agents/credentials \
  -H "Authorization: Bearer $MASTER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "api_key": "<your-anthropic-api-key>",
    "api_base": "https://api.anthropic.com"
  }'

2. Select the built-in runtime

claude_managed_agents is a built-in runtime. You do not need to register a custom harness for it.

3. Create an agent

In the UI, click New Agent, choose claude_managed_agents as the runtime, select a model, and save. Or via the API:

curl -X POST $LAP_URL/api/agents \
  -H "Authorization: Bearer $MASTER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "my-claude-agent",
    "owner_id": "local-user",
    "runtime": "claude_managed_agents",
    "model": "claude-opus-4-5",
    "system": "You are a helpful assistant."
  }'

4. Start a session and stream events

SESSION=$(curl -s -X POST $LAP_URL/session \
  -H "Authorization: Bearer $MASTER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "runtime": "claude_managed_agents",
    "agent_id": "<agent-id>",
    "prompt": "Summarize the latest changes in this repo."
  }' | jq -r .id)

curl -N "$LAP_URL/v1/sessions/$SESSION/events/stream" \
  -H "Authorization: Bearer $MASTER_KEY"

Events follow the Anthropic Managed Agents SSE shape:

data: {"type":"session.status_running"}
data: {"type":"agent.message","content":"Here are the latest changes..."}
data: {"type":"session.status_idle"}

See Internal SDK contract for the Rust SDK types.

Event kinds

Event kind	Meaning
`session.status_running`	Agent is processing
`agent.message`	Text output from the agent
`agent.tool_use`	Agent is calling a tool
`agent.tool_result`	Tool result returned
`session.status_idle`	Turn complete
`session.error`	Runtime error

​Prerequisites

​1. Add your Anthropic API key

​2. Select the built-in runtime

​3. Create an agent

​4. Start a session and stream events

​Event kinds