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Best practices for building AI agent tools: built-in nodes vs. Call Workflow?

 
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Last Post by system 3 months ago
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Kuzry
 Kuzry
(@kuzry)
Posts: 1
New Member
Topic starter
 

Hi,

I'm developing an AI agent using callin.io, incorporating tools that the agent can invoke to execute various tasks (like querying APIs, updating databases, etc.). I'm seeking the optimal strategy for organizing these tools:

  • Should I develop all tools directly as nodes within the agent's workflow?
    or
  • Should I utilize the Call Workflow node and structure each tool as an independent sub-workflow?

What are the advantages and disadvantages of each approach, particularly concerning performance, maintainability, and the transfer of context between tools?

Thanks in advance for any insights or suggestions!

 
Posted : 12/05/2025 3:05 pm
Michael_Rousseaux
 Michael_Rousseaux
(@michael_rousseaux)
Posts: 4
Active Member
 

I'm far from being a pro, but personally, I create a small workflow for each tool. Then you can reuse it with other agents if needed. More than that, you will be able to upgrade your tools if new nodes or services are developed.

 
Posted : 12/05/2025 4:04 pm
Gallo_AIA
 Gallo_AIA
(@gallo_aia)
Posts: 22
Eminent Member
 

Hello,

My personal approach is to begin with all tools integrated into a single workflow. This is the fastest method for launching an agent and ensures consistent context sharing across all components.

When specific tasks become reusable or begin consuming significant RAM, I then migrate them into separate sub-workflows and invoke them using the Execute Sub-workflow node.

On callin.io Cloud, utilizing a sub-workflow does not incur additional execution costs; therefore, this decision is primarily driven by organizational structure and performance considerations.

For scenarios involving the combination of numerous distinct tasks, I recommend exploring the Model Context Protocol (MCP).

Links

This protocol enables you to expose each sub-workflow as a standard tool that the agent can discover dynamically.

 
Posted : 12/05/2025 4:15 pm
Wouter_Nigrini
 Wouter_Nigrini
(@wouter_nigrini)
Posts: 31
Eminent Member
 

MCPs are quite popular right now. The video below offers further details, and this approach appears to simplify the agent node, making it easier to manage.
 
Posted : 12/05/2025 4:20 pm
system
 system
(@system)
Posts: 332
Reputable Member
 

This discussion was automatically closed 7 days following the last response. New replies are no longer permitted.

 
Posted : 20/05/2025 7:13 am
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