# Authenticated LLM Agent

> Authenticated LLM Agent — a2a-authenticated-llm-agent. Use this tool when you need to securely access AI models with authenticated user requests, solving problems of unauthorized access and enabling paid or restricted AI services. It authenticates inputs using bcrypt and JWT, then outputs LangChain-on-Vertex Gemini completions for verified users. Ideal for use cases requiring per-user LLM access control and authenticated AI gateways.

Canonical page: https://skillsregistry.net/skills/a2a-authenticated-llm-agent  
JSON: https://api.skillsregistry.net/v1/skills/a2a-authenticated-llm-agent

## Description

JWT-gated LLM gateway: authenticate (bcrypt/JWT), then run a LangChain-on-Vertex Gemini completion. Unauthenticated calls are rejected. Ideal for gating paid inference behind login, per-user LLM access, authenticated AI gateways.

## Trust

- **Trust score (0–1):** 0.30
- **Verification tier:** unverified
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Smithery](https://smithery.ai/server/a2a/authenticated-llm-agent)

## 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": "a2a-authenticated-llm-agent"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/a2a-authenticated-llm-agent` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/a2a-authenticated-llm-agent/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