Elasticsearch MCP Server for 7.x

The official MCP server for Elasticsearch does not support Elasticsearch 7.x.
Since many users and industries still use Elasticsearch 7.x—especially the 7.10.2 OSS version.
This project provides a workable MCP server code for Elasticsearch 7.x.

---

Installation and Run

pip install . -i https://pypi.tuna.tsinghua.edu.cn/simple --no-cache-dir

export ELASTICSEARCH_URL="******"
export ELASTICSEARCH_USERNAME="admin"
export ELASTICSEARCH_PASSWORD="******"

python -m mcp_server_elasticsearch --transport stream --host 0.0.0.0 --port 8080

Sample MCP Server output:

2025-09-02 15:50:56,175 - mcp_server_elasticsearch - INFO - Starting MCP server...
2025-09-02 15:50:56,826 - es_client.client - INFO - [BASIC AUTH] 使用基本认证: admin
2025-09-02 15:50:56,835 - elasticsearch - INFO - GET http://******:9200/ [status:200 request:0.007s]
2025-09-02 15:50:56,836 - root - INFO - Connected ElasticSearch version: 7.10.2
2025-09-02 15:50:56,837 - root - INFO - Applied tool filter from environment variables
2025-09-02 15:50:56,838 - root - INFO - Available tools after filtering: ['ListIndexTool', 'IndexMappingTool', 'SearchIndexTool', 'GetShardsTool']
2025-09-02 15:50:56,839 - root - INFO - Enabled tools: ['ListIndexTool', 'IndexMappingTool', 'SearchIndexTool', 'GetShardsTool']
INFO:     Started server process [10294]
INFO:     Waiting for application startup.
2025-09-02 15:50:57,035 - mcp.server.streamable_http_manager - INFO - StreamableHTTP session manager started
2025-09-02 15:50:57,035 - root - INFO - Application started with StreamableHTTP session manager!
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8080 (Press CTRL+C to quit)

Sample langchain output:

Starting agent invocation...


> Entering new AgentExecutor chain...
Thought: The user wants to list all indices in the Elasticsearch cluster. I should use the ListIndexTool to get this information.

Action:
```json
{
  "action": "ListIndexTool",
  "action_input": {}
}

Observation: All indices information:
[
  {
    "health": "green",
    "status": "open",
    "index": "test_index_3",
    "uuid": "vC2-kYNWSZSYxNXiMxC0mw",
    "pri": "1",
    "rep": "0",
    "docs.count": "0",
    "docs.deleted": "0",
    "store.size": "208b",
    "pri.store.size": "208b"
  },
  {
    "health": "green",
    "status": "open",
    "index": "test_index_2",
    "uuid": "lR8JOb4eQDWaFH6DK1DaPA",
    "pri": "1",
    "rep": "0",
    "docs.count": "1",
    "docs.deleted": "0",
    "store.size": "4.4kb",
    "pri.store.size": "4.4kb"
  },
  {
    "health": "green",
    "status": "open",
    "index": "test_index_1",
    "uuid": "WALKOQbtQkq-4YPRn8BkOw",
    "pri": "1",
    "rep": "0",
    "docs.count": "3",
    "docs.deleted": "0",
    "store.size": "4.7kb",
    "pri.store.size": "4.7kb"
  }
]
Thought:{
  "action": "Final Answer",
  "action_input": "当前Elasticsearch集群中有以下3个索引：\n\n1. test_index_3 - 健康状态: green, 文档数: 0, 存储大小: 208b\n2. test_index_2 - 健康状态: green, 文档数: 1, 存储大小: 4.4kb\n3. test_index_1 - 健康状态: green, 文档数: 3, 存储大小: 4.7kb\n\n所有索引都处于正常运行状态（green）。"
}

> Finished chain.

Agent Response: {
  "action": "Final Answer",
  "action_input": "当前Elasticsearch集群中有以下3个索引：\n\n1. test_index_3 - 健康状态: green, 文档数: 0, 存储大小: 208b\n2. test_index_2 - 健康状态: green, 文档数: 1, 存储大小: 4.4kb\n3. test_index_1 - 健康状态: green, 文档数: 3, 存储大小: 4.7kb\n\n所有索引都处于正常运行状态（green）。"
}

Agent process completed