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JMAP MCP Server

Name: JMAP MCP Server
Author: jahfer

by jahfer

Overview Schema Source Related Servers Discussions Admin

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JMAP-MCP

通过 MCP 阅读电子邮件！

介绍

JMAP-MCP 是一个旨在与 JMAP（JSON 邮件访问协议）服务器交互的连接器，允许您通过模型上下文协议 (MCP) 阅读电子邮件。该项目专门演示了如何与 Fastmail JMAP 服务器集成。

Related MCP server: email-mcp

设置

先决条件：确保您已安装 Node.js。
克隆存储库：将此存储库克隆到本地计算机。
安装依赖项：导航到项目目录并运行：
```
npm install
```

API 令牌配置

您需要设置 JMAP API 令牌，以便与您的电子邮件服务器（例如 Fastmail）进行身份验证。请从服务器设置中获取 API 令牌。

运行应用程序时设置JMAP_SESSION_URL和JMAP_TOKEN环境变量。

MCP 配置

要使用 JMAP-MCP，您需要在 MCP 配置文件中将其配置为mcpServer 。以下是示例配置：

{
  "mcpServers": {
    "emails": {
      "command": "npx",
      "args": ["-y", "@jahfer/jmap-mcp-server"],
      "env": {
        "JMAP_SESSION_URL": "https://api.fastmail.com/jmap/session", // for example
        "JMAP_TOKEN": "<your-jmap-token>"
      }
    }
  }
}

用法

在 MCP 中配置后，您可以使用 MCP 中与服务器定义交互的命令或功能通过 JMAP 协议读取您的电子邮件。

Available Tools

3 tools

get_email_contentD

ParametersJSON Schema

Name	Required	Description	Default
`inputSchema`	Yes

TDQS

D1/5.0

Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_mailboxesD

ParametersJSON Schema

Name	Required	Description	Default
`inputSchema`	Yes

TDQS

D1/5.0

Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_emailsD

ParametersJSON Schema

Name	Required	Description	Default
`inputSchema`	Yes

TDQS

D1/5.0

Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

3 tool updatesAug 15, 2025
- First observedget_email_content
- First observedget_mailboxes
- First observedsearch_emails

Deploy Server

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

D1.8/5.0

Scored 2026-04-18 10:05 across 3 tools

Disambiguation5/5

The three tools have clearly distinct purposes: get_email_content retrieves specific email content, get_mailboxes lists mailboxes, and search_emails searches across emails. There is no overlap in functionality, making it easy for an agent to select the right tool for each task.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern with snake_case (get_email_content, get_mailboxes, search_emails). The naming is predictable and readable throughout the set.

Tool Count3/5

With only 3 tools, the set feels thin for an email server, as it lacks operations like creating, updating, or deleting emails or mailboxes. While the tools cover basic retrieval and search, the scope is limited and may not support full email workflows.

Completeness2/5

The tool surface is significantly incomplete for an email domain, missing essential CRUD operations such as send_email, delete_email, create_mailbox, or update_email. This will likely cause agent failures when attempting comprehensive email management tasks.

Maintenance

ActivityInactive

ResponsivenessNo issues

Resources

Need Help?

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