Multi-Agent Context Safety

Context-isolated runtime and resolver state for safe concurrent agent operations

Context-isolated runtime and tool resolution prevents agents from interfering with each other when running concurrently in the same process.

Quick Start

1. Default Behavior (Safe)

   Each agent automatically gets its own context-isolated runtime and tool resolver:

   import asyncio
   from praisonaiagents import Agent
   
   async def run_agents():
       # Each agent gets its own context automatically
       agent1 = Agent(name="Agent1", instructions="Help with coding")
       agent2 = Agent(name="Agent2", instructions="Help with writing")
       
       # These run safely in parallel - no state bleed
       tasks = [
           asyncio.create_task(agent1.astart("Write a Python function")),
           asyncio.create_task(agent2.astart("Write a blog post"))
       ]
       
       results = await asyncio.gather(*tasks)
       print("Both agents completed safely")
   
   asyncio.run(run_agents())
   
2. Multi-Project Tool Resolution

   Agents in different working directories get their own tool resolver anchored to their CWD:

   import os
   from praisonaiagents import Agent
   from praisonai.tool_resolver import reset_default_resolver
   
   # Project A with its own tools.py
   os.chdir("/project_a")
   agent_a = Agent(name="ProjectA", instructions="Use project A tools")
   agent_a.start("Use my_custom_tool")  # Uses /project_a/tools.py
   
   # Switch to project B
   os.chdir("/project_b") 
   reset_default_resolver()  # Force re-anchor for new CWD
   agent_b = Agent(name="ProjectB", instructions="Use project B tools")
   agent_b.start("Use my_custom_tool")  # Uses /project_b/tools.py
   

---

How It Works

Context variables (contextvars.ContextVar) automatically isolate state per execution context. Each agent/task/request gets its own:

• Interactive runtime with separate LSP/ACP configurations
• Tool resolver anchored to its own working directory
• Memory and cache state that won’t leak between agents

---

Configuration Options

The context safety is automatic - no configuration required. However, there are some control points:

Component	Behavior	Control Function
Tool Resolver	Per-context CWD anchoring	reset_default_resolver()
Interactive Runtime	Per-context config isolation	cleanup_runtime() (context-local)
Memory State	Automatic isolation	Built-in with async-safe locks

---

Common Patterns

Pattern 1: Daemon with Project Switching

import os
from praisonai.tool_resolver import reset_default_resolver
from praisonaiagents import Agent

class MultiProjectDaemon:
    def switch_project(self, project_path: str):
        """Switch to a different project directory."""
        os.chdir(project_path)
        reset_default_resolver()  # Re-anchor tool resolver
        print(f"Switched to project: {project_path}")
    
    def process_request(self, project: str, task: str):
        """Process a request for a specific project."""
        self.switch_project(f"/workspace/{project}")
        
        agent = Agent(
            name=f"Agent-{project}",
            instructions=f"Work on {project} tasks"
        )
        
        return agent.start(task)

# Usage
daemon = MultiProjectDaemon()
result1 = daemon.process_request("frontend", "Fix the CSS bug")
result2 = daemon.process_request("backend", "Optimize the database query")

Pattern 2: Concurrent Multi-Agent Workflow

import asyncio
from praisonaiagents import Agent

async def parallel_analysis():
    """Run multiple agents concurrently without interference."""
    
    # Each agent gets isolated context automatically
    agents = [
        Agent(name="DataAnalyst", instructions="Analyze data patterns"),
        Agent(name="SecurityReviewer", instructions="Check for security issues"), 
        Agent(name="CodeReviewer", instructions="Review code quality")
    ]
    
    tasks = [
        "Analyze the sales data for trends",
        "Audit the authentication system",
        "Review the new API endpoints"
    ]
    
    # All run safely in parallel
    results = await asyncio.gather(*[
        agent.astart(task) for agent, task in zip(agents, tasks)
    ])
    
    return results

# Each agent uses its own runtime/resolver context
results = asyncio.run(parallel_analysis())

Pattern 3: IDE Plugin Integration

import asyncio
from praisonaiagents import Agent
from praisonai.tool_resolver import reset_default_resolver

class IDEPlugin:
    def __init__(self):
        self.current_workspace = None
    
    async def handle_workspace_change(self, workspace_path: str):
        """Handle IDE workspace changes."""
        if self.current_workspace != workspace_path:
            self.current_workspace = workspace_path
            reset_default_resolver()  # Re-anchor to new workspace
            print(f"Workspace changed to: {workspace_path}")
    
    async def execute_command(self, command: str):
        """Execute command in current workspace context."""
        agent = Agent(
            name="IDEAssistant",
            instructions="Help with IDE tasks"
        )
        
        # Agent automatically uses workspace-specific context
        return await agent.astart(command)

# Usage in IDE
plugin = IDEPlugin()
await plugin.handle_workspace_change("/user/projects/myapp")
result = await plugin.execute_command("Refactor this function")

---

Best Practices

Always use reset_default_resolver() after chdir

When switching working directories in long-lived processes, explicitly reset the tool resolver to pick up the new directory’s tools.py.

import os
from praisonai.tool_resolver import reset_default_resolver

# Good - explicit reset after chdir
os.chdir("/new/project")
reset_default_resolver()
agent = Agent(name="Agent", instructions="Use local tools")

# Bad - may use cached resolver from old directory  
os.chdir("/new/project")
agent = Agent(name="Agent", instructions="Use local tools")

Trust automatic context isolation

Don’t manually manage context variables - the framework handles isolation automatically. Each async task or thread gets its own context.

# Good - automatic isolation
async def worker(agent_name: str):
    agent = Agent(name=agent_name, instructions="Work independently")
    return await agent.astart("Do the task")

# Run multiple workers - each gets isolated context
tasks = [worker(f"Agent{i}") for i in range(5)]
results = await asyncio.gather(*tasks)

# Bad - manual context management (unnecessary)
import contextvars
ctx_var = contextvars.ContextVar('agent_state')
# Don't do this - framework handles it

Use context-local cleanup functions

When cleaning up resources, use the context-local versions that only affect the current agent’s context.

from praisonai.cli.features.interactive_tools import cleanup_runtime

async def agent_task():
    agent = Agent(name="TempAgent", instructions="Temporary task")
    try:
        result = await agent.astart("Do something")
        return result
    finally:
        cleanup_runtime()  # Only cleans up this context's runtime

Leverage CWD-per-context for multi-project tools

Each context anchors its tool resolver to the working directory when first called. Use this for clean project separation.

# Project structure:
# /project_a/tools.py  - has custom_tool_a()
# /project_b/tools.py  - has custom_tool_b()

import os
from praisonaiagents import Agent

# Agent A in project A context
os.chdir("/project_a")
agent_a = Agent(name="AgentA", instructions="Use project A tools")
# Automatically resolves to /project_a/tools.py

# Agent B in project B context  
os.chdir("/project_b")
agent_b = Agent(name="AgentB", instructions="Use project B tools")
# Automatically resolves to /project_b/tools.py

# Each agent uses its own project's tools

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Related

Thread Safety

Thread-safe agent operations and state management

Tool Resolver

Context-aware tool resolution and loading