agent-testing-harness SKILL.md skillA
agent-testing-harness from latestaiagents/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add latestaiagents/agent-skills/agent-testing-harness@git:20260205.a0b8780Pins git:20260205.a0b8780 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- latestaiagents/agent-skills
- Path
plugins/agent-architect/skills/testing/agent-testing-harness/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260205.a0b8780, committed Feb 5, 2026
- Size
- 13,205 bytes
- Repository stars
- 6
- License
- MIT
Use this skill when testing AI agent systems. Activate when the user needs to test agent behavior, write tests for multi-agent systems, implement agent evaluation frameworks, create test harnesses for autonomous agents, or validate agent outputs systematically.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Agent Testing Harness
Design and implement comprehensive testing for AI agent systems.
## When to Use
- Building reliable agent systems
- Validating agent behavior before deployment
- Creating regression tests for agents
- Implementing continuous testing for agent updates
- Evaluating agent performance metrics
## Testing Pyramid for Agents
```
┌─────────────────────┐
│ End-to-End │ Full workflow tests
│ Agent Tests │ (expensive, few)
├─────────────────────┤
│ Integration │ Multi-agent interaction
│ Tests │ (medium cost, some)
├─────────────────────┤
│ Component │ Individual agent behavior
│ Tests │ (cheap, many)
├─────────────────────┤
│ Unit Tests │ Tools, utilities, helpers
│ │ (cheapest, most)
└─────────────────────┘
```
## Unit Testing Agent Components
### Testing Tools
```typescript
import { describe, it, expect, vi } from 'vitest';
describe('SearchTool', () => {
const searchTool = new SearchTool();
it('returns results for valid query', async () => {
…Read the whole file at its exact version.
How to install
mdr add latestaiagents/agent-skills/agent-testing-harness@sha256:edfbd55a1b0fddb2The line at the top of this page pins the label git:20260205.a0b8780, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_s7pgodz2rxnvb52p)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Feb 5, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13205 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
latestaiagents/agent-skills · 6 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_s7pgodz2rxnvb52p GET https://markdownregistry.com/api/v1/resolve?ref=latestaiagents/agent-skills/agent-testing-harness GET https://markdownregistry.com/api/v1/blob/edfbd55a1b0fddb2bcb3b1cfdfcb41764cc4444d322743f95012a5b5eb1f6a8d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.