# OnlyHarness Registry

> OnlyHarness Registry — com-onlyharness-registry. Use this tool when you need to streamline AI agent development by searching, inspecting, and reusing pre-built harnesses. The OnlyHarness Registry solves problems of duplicated effort and inconsistent integration by providing a centralized hub for publishing and pulling reusable AI agent components. It accepts search queries as input and outputs relevant harnesses, facilitating efficient AI agent construction and deployment.

Canonical page: https://skillsregistry.net/skills/com-onlyharness-registry  
JSON: https://api.skillsregistry.net/v1/skills/com-onlyharness-registry

## Description

Search, inspect, pull and publish reusable AI-agent harnesses from onlyharness.com.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 0.2.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** search
- **Updated:** 2026-09-02

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.onlyharness%2Fregistry)
- **Repository:** <https://github.com/elvismusli/onlyharness>

## Use it

MCP endpoint published by the skill: `https://onlyharness.com/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "com-onlyharness-registry"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/com-onlyharness-registry` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/com-onlyharness-registry/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt