agent-harness-construction

Design AI agent action spaces, tool definitions, and structured observation formats.

1|Updated Apr 7, 2026
One-click install
npx skills add https://github.com/riftzen-bit/gemini-setup --skill agent-harness-construction-riftzen-bit
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-harness-construction
Source: https://github.com/riftzen-bit/gemini-setup/tree/main/skills/agent-harness-construction
Command: npx skills add https://github.com/riftzen-bit/gemini-setup --skill agent-harness-construction-riftzen-bit

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Agents frequently fail or behave unpredictably because their tools, observations, and recovery paths are underspecified; this Skill helps teams design clearer action spaces, structured observations, and explicit recovery contracts to raise completion rates and reduce retries.

Core Features & Use Cases

  • Action Space Design: Define stable, explicit tool names, schema-first inputs, and deterministic output shapes to reduce ambiguity in tool selection and parsing.
  • Observation & Recovery Contracts: Require structured tool responses with status, summary, next_actions, and artifacts plus root cause hints and safe retry instructions for every error path.
  • Architecture & Benchmarking: Recommend architecture patterns (ReAct, function-calling, hybrid), granularity rules for micro/medium/macro tools, and metrics such as completion rate, retries per task, and cost per successful task.
  • Use Case: Improve a deployment agent that previously misapplied permissions by breaking actions into micro-tools, returning structured observations, and adding explicit stop conditions to avoid unsafe retries.

Quick Start

Improve the agent's tool schemas, observation fields, and error recovery instructions to increase completion rates on a failing automation workflow.

Frequently Asked Questions about agent-harness-construction

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

FAQPage Schema
Why does my AI agent fail or behave unpredictably during automated tasks?

AI agents fail unpredictably when their tools, observations, and recovery paths are underspecified. Defining clearer action spaces, structured observations, and explicit recovery contracts raises task completion rates and reduces retries.

How do I design an action space for a deployment agent to avoid unsafe retries?

Design an agent action space by defining stable tool names, schema-first inputs, and deterministic output shapes. Break actions into micro-tools, return structured observations, and add explicit stop conditions to prevent unsafe retries.

What should be included in structured agent observations and error recovery contracts?

Structured agent observations require status, summary, next_actions, and artifacts fields. Error recovery contracts must include root cause hints and safe retry instructions for every potential error path.

What metrics should I benchmark to measure AI agent task completion success?

Benchmark AI agent success using metrics like completion rate, retries per task, and cost per successful task. These metrics quantify the reliability and efficiency of your action space and tool definitions.

When should I use micro-tools versus macro-tools in agent design?

Granularity rules for micro, medium, and macro tools depend on your workflow complexity. Micro-tools reduce ambiguity in tool selection and parsing, preventing issues like misapplied permissions in deployment agents.

Does this approach work with ReAct and function-calling architectures?

Yes, this approach recommends architecture patterns like ReAct, function-calling, and hybrid models. Structured observations and schema-first tool inputs integrate seamlessly with these agent designs.