agent-eval-harness

Capture AI agent trajectories and emit standardized JSONL outputs.

6|1|Updated Jan 15, 2026
One-click install
npx skills add https://github.com/plaited/agent-eval-harness --skill agent-eval-harness
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-eval-harness
Source: https://github.com/plaited/agent-eval-harness/tree/main/.plaited/skills/agent-eval-harness
Command: npx skills add https://github.com/plaited/agent-eval-harness --skill agent-eval-harness

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a CLI-driven framework to capture agent trajectories, apply schema-driven adapters, and emit standardized JSONL outputs for downstream scoring and evaluation.

Core Features & Use Cases

  • Trajectory capture: Run prompts against headless adapters to collect full trajectories, including thoughts, tools, and plans, in JSONL.
  • Grading and analysis: Calibrate graders, summarize outputs, and compare configurations across runs.
  • Pipeline-friendly: Integrates into CI, supports multiple commands (capture, extract, grade, summarize, calibrate, balance, compare).

Quick Start

Use the agent-eval-harness to capture prompts with a headless adapter and produce results.jsonl for analysis.

Frequently Asked Questions about agent-eval-harness

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

FAQPage Schema
How do I capture AI agent trajectories for evaluation?

To evaluate AI agent interactions, this Skill runs prompts against headless adapters and captures full interaction trajectories, including thoughts, tools, and plans, into standardized JSONL outputs for downstream scoring.

How do I compare AI agent configurations across multiple runs?

You can compare AI agent configurations by using the built-in compare command, which summarizes and evaluates standardized JSONL outputs across multiple runs to highlight performance differences.

Does agent trajectory evaluation require a specific JavaScript runtime?

Yes, this agent trajectory evaluation requires a Bun-compatible runtime, along with project schemas, headless adapters, and a configured execution environment to run the capture, extract, and grade tasks.

What is the best way to calibrate graders for AI agent outputs?

Calibrating graders for AI agent outputs is handled by a dedicated CLI command that applies schema-driven adapters to standardize interaction data, ensuring accurate and consistent scoring across evaluation runs.

Can I integrate AI agent evaluation pipelines into CI?

Yes, you can integrate AI agent evaluation pipelines into CI. This framework is pipeline-friendly, supporting CLI commands like capture, grade, and summarize to automate standardized JSONL output generation within continuous integration workflows.

Why do I need to validate reference solutions in AI agent evaluation?

Validating reference solutions in AI agent evaluation ensures your grading mechanisms reliably assess agent performance against known correct outcomes. This Skill supports reference-solution validation within schema-driven environments to verify evaluation accuracy.

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