Nexus Mcp
by nexus-api-labcommunityv1.0.0
Nexus MCP is an MCP server that enables AI models to invoke AI CLI agents in parallel, providing features like automatic retries, JSON-first response parsing, and persistent preferences.
From the registry: Japanese LLM security — prompt injection detection (jpi-guard) + PII masking (PII Guard). Free.
Install & configure
Prerequisites
- required
- optionalAI CLI binaries (optional)Gemini CLI, Codex, Claude Code, or OpenCode — required only for runners you want to use
Install in your client
Paste into the AI you're chatting with — it will figure out the rest
Please install the `nexus-mcp` MCP server into my current AI client (that's you).
Required prerequisites (do these first if not already done):
- **uv / uvx** — Install uv (https://docs.astral.sh/uv/)
Optional prerequisites:
- AI CLI binaries (optional) — Gemini CLI, Codex, Claude Code, or OpenCode — required only for runners you want to use
Canonical MCP server config (stdio transport):
- command: `uvx`
- args: ["nexus-mcp"]
- optional environment variables:
- `NEXUS_GEMINI_MODEL`: Default Gemini model (example: `gemini-3-flash-preview`)
- `NEXUS_CODEX_MODEL`: Default Codex model (example: `gpt-5.2`)
- `NEXUS_OPENCODE_MODEL`: Default OpenCode model (example: `ollama-cloud/kimi-k2.5`)
Note: Invokes AI CLI agents (Gemini, Codex, Claude Code, OpenCode) as MCP tools with parallel execution and retries.
Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.Note: Invokes AI CLI agents (Gemini, Codex, Claude Code, OpenCode) as MCP tools with parallel execution and retries.
Tools (4)
Gemini CLI
Supported AI CLI agent for various tasks.
Codex
Supported AI CLI agent for code-related tasks.
Claude Code
Supported AI CLI agent for code-related tasks.
OpenCode
Supported AI CLI agent for various tasks.
Environment variables
NEXUS_GEMINI_MODELrequiredSpecifies the model to use for Gemini CLI.NEXUS_CODEX_MODELrequiredSpecifies the model to use for Codex.NEXUS_OPENCODE_MODELrequiredSpecifies the model to use for OpenCode.Prerequisites
- • Python 3.13+
Remote Endpoints
https://mcp.nexus-api-lab.com/
type: streamable-http
Details
- License
- MIT
- Released
- Apr 14, 2026
- Last commit
- Apr 16, 2026
- Registry name
- io.github.nexus-api-lab/nexus-mcp
Categories
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