About RealAgent MCP
RealAgent MCP provides AI agents with SM2 identity linking, SD-JWT verifiable presentation generation and verification, and Chinese cryptographic operations. Its MCP tools cover identity, credentials, and cryptography, with private keys and VCs encrypted locally.
Key features
- 01Generates SM2 keys and signs or verifies data
- 02Links real-name identity by QR code and obtains a VC
- 03Generates, verifies, and parses SD-JWT VPs
- 04Encrypts private keys and VCs with SM4
- 05Checks for server version updates
Use cases
- 01Create a separate real-name identity for each agent
- 02Selectively disclose and verify credential fields
- 03Use SM2 tools for signing, encryption, and decryption
MCP support
RealAgent MCP runs over stdio and exposes tools for identity linking, VP and VC operations, SM2 cryptography, and version checks. Each agent requires a unique `--agent-id`.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project READMErealagent-mcp
国信智能体实名关联服务 MCP Server — 单个可执行文件 · 本地通信 · 国密加密 · 全平台支持。
为 AI Agent 提供 SM2 实名身份关联、SD-JWT 可验证证明(VP)生成与验证、SM2 密码学操作等能力。
安装
npm i -g realagent-mcp
必须全局安装(
-g)。这样realagent-mcp会进入 PATH,MCP 配置里的npx realagent-mcp才会命中全局副本,而不会每次都往_npx缓存里再拉一份 (即避免依赖重复与 npx 旧缓存问题)。
配置 MCP Client(--agent-id 必填,每个 Agent 使用唯一名称):
{
"mcpServers": {
"realagent-mcp": {
"command": "npx",
"args": ["-y", "realagent-mcp", "stdio", "--agent-id", "my-agent"]
}
}
}
升级
npm update -g realagent-mcp
# 或
npm i -g realagent-mcp@latest
升级后重启 MCP Client 即可。Agent 会在每次对话开始时自动调用 system_update 检查新版本。
功能
- SM2 密钥对生成 — 国密 SM2 签名/验签/加解密
- 实名关联 — 生成二维码 → 扫码认证 → 自动领取 VC
- VP 生成/验证 — SD-JWT 可验证证明,W3C VC Data Model v2
- SM4 加密存储 — 私钥和 VC 使用 SM4-CTR+SM3-HMAC 本地加密
- 自动更新 — 内置版本检查 + system_update 工具
Tools
MCP Server 运行时动态暴露以下 14 个工具:
实名身份关联
| 工具 | 说明 |
|---|---|
identity_link | 发起实名关联:生成二维码,用户扫码认证后自动领取实名凭证(VC) |
identity_status | 查询当前 Agent 的实名关联状态与身份信息 |
identity_revoke | 注销实名关联并作废凭证 |
可验证证明(VP)
| 工具 | 说明 |
|---|---|
identity_vp | 生成 SD-JWT 可验证证明(VP),支持选择性披露字段 |
identity_verify_vp | 验证 VP 的签名与披露内容 |
vp_parse | 解析 VP 结构,提取披露的声明字段 |
凭证与密钥查询
| 工具 | 说明 |
|---|---|
vc_info | 查询本地已领取的可验证凭证(VC)摘要信息 |
vc_raw | 获取 VC 原始数据 |
key_info | 查询本地 SM2 密钥对与指纹信息 |
国密运算
| 工具 | 说明 |
|---|---|
crypto_sign | 使用 SM2 私钥对数据签名 |
crypto_verify | 验证 SM2 签名 |
crypto_encrypt | SM2 加密数据 |
crypto_decrypt | SM2 解密数据 |
系统
| 工具 | 说明 |
|---|---|
system_update | 检查 MCP Server 是否有新版本 |
AGENT INSTRUCTIONS
以下内容供 AI Agent 读取,用于自动完成安装和配置。
-
Prerequisite — verify Node.js (do this FIRST, before installing). realagent-mcp requires Node.js >= 18.13 (npm and npx are bundled with it). Before installing, check the environment:
- Run
node --versionandnpm --version. If both succeed andnode --versionreports >= v18.13, skip to step 2. - If
node/npmis not found (no Node.js) or the version is older than 18.13, stop and help the user set it up before going further:- Windows:
winget install OpenJS.NodeJS.LTS(PowerShell), or download the LTS installer from https://nodejs.org. - macOS:
brew install node@22, ornvm install --lts(nvm: https://github.com/nvm-sh/nvm). - Linux:
nvm install --lts(nvm: https://github.com/nvm-sh/nvm), or the NodeSource repo for your distro.
- Windows:
- After installing/upgrading, have the user restart the terminal and
MCP client, then re-verify with
node --version,npm --version, andnpx --version. Only proceed to step 2 once all three succeed and Node >= 18.13 is confirmed.
- Run
-
Install via npm (global, so
realagent-mcpis on PATH):npm i -g realagent-mcp -
MCP client config — Each agent MUST have a unique
--agent-id. One agent-id = one identity = one SM2 key pair. Never reuse an agent-id across agents. The realagent platform registers each key pair as a separate identity; shared agent-id causes identity conflicts.Generate an agent-id yourself, using a descriptive name based on the current project or the agent's purpose (e.g. "my-claude-code", "frontend-dev-helper", "pr-review-bot"). Use lowercase letters, digits and hyphens only. Then ASK the user to confirm before using it:
I'll configure realagent-mcp with agent-id: <name>. This name will be used to derive your unique SM2 identity. Is that OK? You can change it to any name you prefer.
Once confirmed, write this MCP config:
{ "mcpServers": { "realagent-mcp": { "command": "npx", "args": [ "-y", "realagent-mcp", "stdio", "--agent-id", "<confirmed-name>" ] } } }Data is stored under
.realagent/agents/in the working directory. Add--data-dirto customize the path. -
Restart the MCP client. The server exposes 14 tools (5 identity + 4 key/VC
- 4 crypto + 1 system). Start with
identity_status.
- 4 crypto + 1 system). Start with
-
Version check — Call
system_updateat the start of each conversation (or at least once per day). When an update is available, tell the user and help them runnpm update -g realagent-mcpornpm i -g realagent-mcp@latest. Only skip the version check if the user explicitly asks you to.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.