# Index9

> Use this tool when you need to find and compare language models from OpenRouter, or when you want to test their capabilities and pricing. Index9 provides a searchable database of 300+ models, allowing you to filter by natural language queries or specific parameters, and outputs detailed metadata and live API test results. It helps solve problems related to model selection, pricing, and performance evaluation in natural language processing tasks.

Canonical page: https://skillsregistry.net/skills/index9  
JSON: https://api.skillsregistry.net/v1/skills/index9

## Description

Provides up-to-date pricing, specifications, and capabilities for 300+ language models from OpenRouter. Search models by natural language queries or filters, get detailed metadata including pricing and context limits, and optionally test models with live API requests to compare outputs and latency.

## Trust

- **Trust score (0–1):** 0.96
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** search
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/index9)
- **Repository:** <https://github.com/index9-org/mcp>

## Use it

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": "index9"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/index9` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/index9/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