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Kailash Nexus — MANDATORY for HTTP/API/CLI/MCP unified deployment. Direct FastAPI/Flask BLOCKED.
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| name | nexus |
| description | Kailash Nexus — MANDATORY for HTTP/API/CLI/MCP unified deployment. Direct FastAPI/Flask BLOCKED. |
Nexus is a zero-config multi-channel platform built on Kailash Core SDK that deploys workflows as API + CLI + MCP simultaneously.
Nexus transforms workflows into a complete platform with:
from nexus import Nexus
# Define workflow
workflow = create_my_workflow()
# Deploy to all channels at once
app = Nexus()
app.register("my_workflow", workflow.build())
app.start()
# Now available via:
# - HTTP API: POST http://localhost:8000/api/workflow/{workflow_id}
# - CLI: nexus run {workflow_id} --input '{"key": "value"}'
# - MCP: Connect via MCP client (Claude Desktop, etc.)
@app.handler() decorator for direct function registrationNexus eliminates boilerplate:
Single deployment, three access methods:
Consistent session management:
Production-ready capabilities:
Use Nexus when you need to:
from nexus import Nexus
from dataflow import DataFlow
# Define models
db = DataFlow(...)
@db.model
class User:
id: str
name: str
# Auto-generates CRUD endpoints for all models
app = Nexus()
for name, wf in db.get_workflows().items():
app.register(name, wf)
app.start()
# GET /api/User/list
# POST /api/User/create
# GET /api/User/read/{id}
# PUT /api/User/update/{id}
# DELETE /api/User/delete/{id}
from nexus import Nexus
from kaizen.core.base_agent import BaseAgent
# Deploy agents via all channels
agent_workflow = create_agent_workflow()
app = Nexus()
app.register("agent", agent_workflow.build())
app.start()
# Agents accessible via API, CLI, and MCP
from nexus import Nexus
from kailash.workflow.builder import WorkflowBuilder
# Deploy custom workflows
app = Nexus()
app.register("workflow_1", create_workflow_1().build())
app.register("workflow_2", create_workflow_2().build())
app.register("workflow_3", create_workflow_3().build())
app.start()
from nexus import Nexus
# Complete platform from workflows
app = Nexus()
app.register("workflow_a", workflow_a.build())
app.register("workflow_b", workflow_b.build())
app.start()
app = Nexus()
app.register("my_workflow", workflow.build())
app.start() # Single process, hot reload
from nexus import Nexus
app = Nexus()
app.register("my_workflow", workflow.build())
app.start() # Uses AsyncLocalRuntime by default (correct for Docker)
# Deploy multiple Nexus instances behind nginx/traefik
docker-compose up --scale nexus=3
| Feature | API | CLI | MCP |
|---|---|---|---|
| Access | HTTP | Terminal | MCP Clients |
| Input | JSON | Args/JSON | Structured |
| Output | JSON | Text/JSON | Structured |
| Sessions | ✓ | ✓ | ✓ |
| Auth | ✓ | ✓ | ✓ |
| Streaming | ✓ | ✓ | ✓ |
For Nexus-specific questions, invoke:
nexus-specialist - Nexus implementation and deploymentrelease-specialist - Production deployment patterns skill - When to use Nexus vs other approaches