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The Friday daemon exposes an HTTP API on port 18080. You can use it to manage spaces, send prompts, trigger automations, and retrieve artifacts programmatically.
The interactive Try it panel in the API reference requires a running Friday daemon on your machine. All requests go to http://localhost:18080 — make sure Friday Studio is running before testing endpoints.

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Base URL

http://localhost:18080

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Quick examples

Check if the daemon is running: 
curl http://localhost:18080/health
List all spaces: 
curl http://localhost:18080/api/workspaces
Send a prompt to a space: 
curl -X POST http://localhost:18080/api/workspaces/{workspaceId}/chat \
  -H 'Content-Type: application/json' \
  -d '{
    "id": "chat-001",
    "message": {
      "role": "user",
      "content": "What can you help me with?"
    }
  }'
Trigger a signal: 
curl -X POST http://localhost:18080/api/workspaces/{workspaceId}/signals/{signalId} \
  -H 'Content-Type: application/json' \
  -d '{"payload": {"key": "value"}}'
List available agents: 
curl http://localhost:18080/api/agents

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Endpoint groups

GroupDescription
HealthDaemon health checks and status
SpacesCreate, list, configure, and delete spaces
ChatSend messages and receive streaming responses
SessionsView and manage running sessions
SignalsTrigger automations programmatically
AgentsDiscover and inspect available agents
ArtifactsRetrieve files, reports, and data produced by agents
ConfigurationManage daemon environment variables

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Streaming responses

Chat and session endpoints support Server-Sent Events (SSE) for real-time streaming. Use curl -N or set Accept: text/event-stream to receive streaming responses.