agent-harness-construction

Design agent action spaces, tool definitions, and observation formats for iterative execution.

Updated Jun 24, 2026
One-click install
npx skills add https://github.com/mostafa-ismail-2004/codex-plugin --skill agent-harness-construction-mostafa-ismail-2004
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-harness-construction
Source: https://github.com/mostafa-ismail-2004/codex-plugin/tree/main/skills/agent-harness-construction
Command: npx skills add https://github.com/mostafa-ismail-2004/codex-plugin --skill agent-harness-construction-mostafa-ismail-2004

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps improve agent reliability when planning actions, calling tools, handling errors, and staying within context limits, so complex tasks complete more consistently.

Core Features & Use Cases

  • Action Space Design: Define stable, narrow tool interfaces that are easier for agents to use correctly.
  • Observation Formatting: Shape tool outputs with clear status, summaries, and follow-up actions to support recovery.
  • Error Recovery and Context Budgeting: Add retry guidance, stop conditions, and compact prompting strategies for longer workflows.
  • Use Case: Use this Skill when an AI workflow needs better tool-calling behavior, fewer retries, and stronger completion rates across planning and execution loops.

Quick Start

Ask the assistant to review your agent tool flow and redesign it for more reliable planning, execution, and recovery.

Frequently Asked Questions about agent-harness-construction

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I improve AI agent reliability when calling tools and planning actions?

Improve agent reliability by defining stable, narrow tool interfaces and formatting observations with clear status summaries. This approach supports better error recovery and context budgeting, leading to higher task completion rates in complex AI workflows.

What is the best way to format tool outputs for AI agent error recovery?

The best way to format tool outputs for error recovery is to include clear status indicators, concise summaries, and explicit follow-up actions. This observation formatting gives agents the deterministic feedback needed to handle errors and resume workflows successfully.

How do I manage context budgeting for long AI workflows?

Manage context budgeting by applying compact prompting strategies, adding retry guidance, and setting explicit stop conditions. These techniques keep longer workflows within context limits while maintaining reliable planning and iterative execution.

Why does my AI assistant fail to complete tasks after a tool calling error?

AI assistants fail after tool errors when they lack explicit recovery contracts and deterministic tool outputs. Redesigning the agent action space with clear stop conditions and structured observation formatting ensures the workflow can recover and complete successfully.

Do I need deterministic tool outputs to build reliable AI agents?

Yes, deterministic tool outputs are required. Building reliable agents relies on predictable tool behavior, explicit recovery contracts, and compact guidance structures to support iterative execution and ensure complex tasks complete consistently.