How do I use this MCP in Claude?

You connect to Vinkius once, and the OpenSearch Shard Calculator becomes a capability available in your Claude interface. You can then ask your agent to perform calculations directly.

Can this help with JVM heap issues?

Yes. The capability provides specific JVM heap size recommendations based on your node's RAM and your specific workload type.

Does this work for any OpenSearch version?

The capability is designed for AWS OpenSearch cluster architecture planning.

What is a safe shard density?

The MCP can evaluate your specific shard count per node to tell you if you are approaching the upper limits of recommended density.

Do I need to host this myself?

No. Vinkius hosts and manages the MCP, so it is ready to use as soon as you connect your client.

How do I know if my shard density is too high?

You can use the calculate_cluster_limits_and_health capability. It will return a flag if the shards per node exceeds the recommended limit of 1000.

Can this capability recommend JVM settings?

Yes, the recommend_resource_and_performance_settings capability provides optimized JVM heap size, recommended garbage collection algorithms like G1GC, and translog flush thresholds.

What is the recommended shard size for OpenSearch?

A good rule of thumb is to target a shard size between 10 and 50 GB. You can use calculate_shard_distribution to see how your specific index size fits these targets.

An astronaut overseeing a futuristic data hub

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Connect OpenSearch Shard Calculator to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get precise AWS OpenSearch architecture and resource settings.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through OpenSearch Shard Calculator.

01
Calculate cluster limits and health
This capability evaluates shard density per node to check for cluster stability. It helps you identify if you are pushing your nodes past recommended limits.
02
Calculate shard distribution
This capability determines the exact number of primary and total shards required. It uses your index size and target shard size to provide a deterministic count.
03
Recommend resource and performance settings
This capability provides optimized JVM heap sizes and garbage collection recommendations. It also suggests refresh intervals based on your specific workload requirements.

Real work

What teams actually run

New Cluster Provisioning

Calculate the necessary shard and replica counts before you deploy your first index.

Scaling Existing Clusters

Determine how many new nodes or shards are needed as your data volume grows.

Performance Troubleshooting

Check if high shard density is the cause of your current cluster instability.

Resource Optimization

Get specific JVM and GC settings to match your current instance types.

One connector, every AI

OpenSearch Shard Calculator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put OpenSearch Shard Calculator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

876ms average. Fast in production.

OpenSearch Shard Calculator is checked daily against the live service.

Daily averagePeak 1091ms

Oct 3Today

Fastest day: 618ms
Slowest day: 1091ms
14-day trend: Improving-18%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of OpenSearch Shard Calculator, so you can see the experience inside your AI.

It does not authenticate your account with OpenSearch Shard Calculator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

OpenSearch Shard Calculator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_vczGy4dWf3ll3CPZeUPgSA2AoDNVpa6IQ4JK6bmA/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — OpenSearch Shard Calculator capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "opensearch-shard-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_vczGy4dWf3ll3CPZeUPgSA2AoDNVpa6IQ4JK6bmA/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up OpenSearch Shard Calculator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work OpenSearch Shard Calculator owners hand off.

This MCP is built for engineers managing large scale search clusters on AWS.

01
DevOps Engineer
Hands off cluster sizing and resource allocation tasks to the agent.
02
Site Reliability Engineer
Uses the capability to audit shard density and prevent node instability.
03
Data Engineer
Calculates shard requirements when designing new data pipelines.

FAQ

Questions OpenSearch Shard Calculator owners ask.

01
How do I use this MCP in Claude?
You connect to Vinkius once, and the OpenSearch Shard Calculator becomes a capability available in your Claude interface. You can then ask your agent to perform calculations directly.
02
Can this help with JVM heap issues?
Yes. The capability provides specific JVM heap size recommendations based on your node's RAM and your specific workload type.
03
Does this work for any OpenSearch version?
The capability is designed for AWS OpenSearch cluster architecture planning.
04
What is a safe shard density?
The MCP can evaluate your specific shard count per node to tell you if you are approaching the upper limits of recommended density.
05
Do I need to host this myself?
No. Vinkius hosts and manages the MCP, so it is ready to use as soon as you connect your client.
06
How do I know if my shard density is too high?
You can use the calculate_cluster_limits_and_health capability. It will return a flag if the shards per node exceeds the recommended limit of 1000.
07
Can this capability recommend JVM settings?
Yes, the recommend_resource_and_performance_settings capability provides optimized JVM heap size, recommended garbage collection algorithms like G1GC, and translog flush thresholds.
08
What is the recommended shard size for OpenSearch?
A good rule of thumb is to target a shard size between 10 and 50 GB. You can use calculate_shard_distribution to see how your specific index size fits these targets.

Explore

More in Infrastructure

Connect OpenSearch Shard Calculator to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Calculate cluster limits and health

Calculate shard distribution

Recommend resource and performance settings

What teams actually run

New Cluster Provisioning

Scaling Existing Clusters

Performance Troubleshooting

Resource Optimization

Building your own app? The connector is yours to use.

OpenSearch Shard Calculator Connector

Claude Desktop

DevOps Engineer

Site Reliability Engineer

Data Engineer

How do I use this MCP in Claude?

Can this help with JVM heap issues?

Does this work for any OpenSearch version?

What is a safe shard density?

Do I need to host this myself?

How do I know if my shard density is too high?

Can this capability recommend JVM settings?

What is the recommended shard size for OpenSearch?

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