# george5562/jira-mcp-server architecture

> Architecture diagram of the GitHub repository george5562/jira-mcp-server, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/george5562/jira-mcp-server
- Repository: https://github.com/george5562/jira-mcp-server

## Overview

This is a stdio-based Jira MCP server: an MCP client invokes named tools, the server validates and dispatches requests, and Jira operations return results to the client. README capabilities include project setup, user and issue-type lookups, issue/subtask management, links, and workflows. The sampled source confirms Jira client setup, tool dispatch, and some lookups and updates; other feature links reflect documented capabilities, not inspected handler implementations.

Main entry points: [`src/index.ts`](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts) (Jira MCP server)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_entry["MCP interface"]
  node_stdio["Stdio transport<br/>[index.ts]"]
  node_server["Jira MCP server<br/>[index.ts]"]
  node_jira_lib["Jira client library"]
end

subgraph group_domain["Jira operations"]
  node_project["Project setup<br/>[index.ts]"]
  node_user["User lookup<br/>[index.ts]"]
  node_issue_types["Issue type lookup<br/>[index.ts]"]
  node_issue_manage["Issue management<br/>[index.ts]"]
  node_issue_links["Issue links<br/>[index.ts]"]
  node_workflow["Issue workflows<br/>[index.ts]"]
end

subgraph group_support["Request support"]
  node_validation["Argument validation<br/>[index.ts]"]
  node_formatting["Description formatting<br/>[index.ts]"]
  node_mentions["Mention resolution<br/>[index.ts]"]
end

node_client(("MCP client"))
node_jira["Jira instance"]

node_client -->|"sends requests"| node_stdio
node_stdio -->|"connects transport"| node_server
node_server -->|"returns results"| node_client
node_server -->|"dispatches tools"| node_project
node_server -->|"dispatches tools"| node_user
node_server -->|"dispatches tools"| node_issue_types
node_server -->|"dispatches tools"| node_issue_manage
node_server -->|"dispatches tools"| node_issue_links
node_server -->|"dispatches tools"| node_workflow
node_server -->|"validates arguments"| node_validation
node_issue_manage -->|"formats descriptions"| node_formatting
node_formatting -->|"resolves mentions"| node_mentions
node_mentions -->|"searches users"| node_jira_lib
node_server -->|"configures client"| node_jira_lib
node_project -.->|"calls Jira API"| node_jira_lib
node_user -->|"calls Jira API"| node_jira_lib
node_issue_types -->|"calls Jira API"| node_jira_lib
node_issue_manage -->|"calls Jira API"| node_jira_lib
node_issue_links -.->|"calls Jira API"| node_jira_lib
node_workflow -.->|"calls Jira API"| node_jira_lib
node_jira_lib -->|"accesses"| node_jira

click node_stdio "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_server "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_project "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_user "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_issue_types "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_issue_manage "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_issue_links "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_workflow "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_validation "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_formatting "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"
click node_mentions "https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_stdio,node_server,node_jira_lib,node_client toneBlue
class node_project,node_user,node_issue_types,node_issue_manage,node_issue_links,node_workflow toneAmber
class node_validation,node_formatting,node_mentions toneMint
class node_jira toneIndigo
```

## Components

### MCP interface

- [Stdio transport](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Jira MCP server](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- **Jira client library**

### Jira operations

- [Project setup](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [User lookup](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Issue type lookup](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Issue management](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Issue links](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Issue workflows](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`

### Request support

- [Argument validation](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Description formatting](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`
- [Mention resolution](https://github.com/george5562/jira-mcp-server/blob/main/src/index.ts): `src/index.ts`

### Other components

- **MCP client**
- **Jira instance**

## Connections

- MCP client → Stdio transport: sends requests
- Stdio transport → Jira MCP server: connects transport
- Jira MCP server → MCP client: returns results
- Jira MCP server → Project setup: dispatches tools
- Jira MCP server → User lookup: dispatches tools
- Jira MCP server → Issue type lookup: dispatches tools
- Jira MCP server → Issue management: dispatches tools
- Jira MCP server → Issue links: dispatches tools
- Jira MCP server → Issue workflows: dispatches tools
- Jira MCP server → Argument validation: validates arguments
- Issue management → Description formatting: formats descriptions
- Description formatting → Mention resolution: resolves mentions
- Mention resolution → Jira client library: searches users
- Jira MCP server → Jira client library: configures client
- Project setup → Jira client library: calls Jira API
- User lookup → Jira client library: calls Jira API
- Issue type lookup → Jira client library: calls Jira API
- Issue management → Jira client library: calls Jira API
- Issue links → Jira client library: calls Jira API
- Issue workflows → Jira client library: calls Jira API
- Jira client library → Jira instance: accesses