How to connect Elasticsearch to Claude Code

1. 1. Enable Elasticsearch in Metorial

   In your Metorial portal, enable the Elasticsearch MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Elasticsearch tools.

• Cluster Health: Get the health status and key metrics of the Elasticsearch cluster including node count, shard allocation status, and pending tasks.
• List Indices: List all indices in the Elasticsearch cluster with their health status, document count, and storage size.
• Get Document: Retrieve one or more known Elasticsearch documents by ID.
• Bulk Operations: Perform multiple index, create, update, or delete operations in a single API call.
• Index Document: Create or replace a document in an Elasticsearch index.
• Update Document: Partially update an existing document in an Elasticsearch index.
• Manage Index: Create, configure, open, close, or delete an Elasticsearch index.
• Search Documents: Search and query documents in Elasticsearch using the full Query DSL.
• Manage Watch: Create, update, delete, execute, activate, or deactivate Watcher alerts.
• Manage Alias: Create, delete, or list index aliases.
• Graph Explore: Discover relationships between terms in an Elasticsearch index.
• ES|QL Query: Execute an ES|QL query to filter, transform, and analyze data stored in Elasticsearch.
• Manage Snapshot: Create, restore, delete, or retrieve snapshots and snapshot repositories for cluster backups.
• Reindex: Copy documents from one index to another, optionally applying a query filter or transformations via a script.
• Run Inference: Execute a machine learning inference task using a configured inference endpoint.
• And 5 more on the Elasticsearch MCP server page.

• Elasticsearch tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Elasticsearch tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.