# Nexus

> Use this tool when you need to manage and route multiple AI services, such as OpenAI, Anthropic, and Google Vertex AI, through a unified interface. Nexus solves problems of centralized AI resource management, multi-tenancy, and diverse AI tool aggregation, providing features like rate limiting, authentication, and secure API key management. It accepts HTTP requests and supports both STDIO and HTTP MCP server protocols, making it ideal for organizations requiring controlled access to AI resources.

Canonical page: https://skillsregistry.net/skills/grafbase-nexus  
JSON: https://api.skillsregistry.net/v1/skills/grafbase-nexus

## Description

Nexus is an AI router built by Grafbase that aggregates multiple MCP servers and LLM providers (OpenAI, Anthropic, Google Vertex AI) through a unified HTTP interface, transforming from a simple MCP router into a full-featured AI gateway. It features comprehensive rate limiting with token-based quotas, stateless JWT-based authentication, tool discovery via Tantivy search indexing, and support for both STDIO and HTTP MCP server protocols with OAuth2 token forwarding. The implementation includes Docker deployment, Redis-backed distributed rate limiting, bring-your-own-key functionality for secure API key management, and extensive integration testing, making it valuable for organizations needing centralized AI resource management, multi-tenant AI applications requiring usage controls, and enterprises seeking to aggregate diverse AI tools and models behind a single authenticated endpoint.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-05-22

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/grafbase-nexus)
- **Repository:** <https://github.com/nexus-router/nexus>

## 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": "grafbase-nexus"
    }
  }
}
```

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