OpenSearch MCP Search

Search documents, run aggregations, inspect index mappings and check cluster health in OpenSearch.

1 credits / tool call

Quick start

Add a OpenSearch connection with the settings below, then click Test configuration.
Create an API key for your agent.
Paste the key below, click Test endpoint, and copy the configuration for your platform.

Endpoint	`https://market.oshaani.com/opensearch` (your default connection) or `https://market.oshaani.com/opensearch/<connection-id>`
Transport	Streamable HTTP (stateless, JSON responses). MCP protocol versions 2024-11-05 to 2025-11-25 and 2026-07-28.
Authentication	`Authorization: Bearer <API key>`, using a key from the API keys page.

Agent configuration

Endpoint The default URL uses your organisation's default OpenSearch connection; a URL with an ID pins one connection.

API key

Get a key

The key is filled into the snippets below. It stays in this page and is only sent with the test request.

Runs initialize and tools/list against the endpoint, exactly like an agent. No credits are charged.

Any MCP client that supports remote (Streamable HTTP) servers with custom headers.

{
  "name": "opensearch",
  "transport": "streamable-http",
  "url": "https://market.oshaani.com/opensearch",
  "headers": {
    "Authorization": "Bearer YOUR_API_KEY"
  }
}

~/.cursor/mcp.json (all projects) or .cursor/mcp.json in a project.

{
  "mcpServers": {
    "opensearch": {
      "url": "https://market.oshaani.com/opensearch",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Settings > Developer > Edit Config (claude_desktop_config.json). Uses the mcp-remote bridge; needs Node.js.

{
  "mcpServers": {
    "opensearch": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://market.oshaani.com/opensearch",
        "--header",
        "Authorization:${AUTH_HEADER}"
      ],
      "env": {
        "AUTH_HEADER": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Run in your terminal, or put the JSON in .mcp.json at the project root.

claude mcp add --transport http opensearch https://market.oshaani.com/opensearch \
  --header "Authorization: Bearer YOUR_API_KEY"

# .mcp.json
{
  "mcpServers": {
    "opensearch": {
      "type": "http",
      "url": "https://market.oshaani.com/opensearch",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

.vscode/mcp.json (GitHub Copilot agent mode). VS Code prompts for the key once and stores it securely.

{
  "inputs": [
    {
      "type": "promptString",
      "id": "oshaani-mcp-key",
      "description": "oshaani MCP Marketplace API key",
      "password": true
    }
  ],
  "servers": {
    "opensearch": {
      "type": "http",
      "url": "https://market.oshaani.com/opensearch",
      "headers": {
        "Authorization": "Bearer ${input:oshaani-mcp-key}"
      }
    }
  }
}

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "opensearch": {
      "serverUrl": "https://market.oshaani.com/opensearch",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Responses API remote MCP tool (Python SDK).

from openai import OpenAI

client = OpenAI()
response = client.responses.create(
    model="gpt-4.1",
    tools=[{
        "type": "mcp",
        "server_label": "opensearch",
        "server_url": "https://market.oshaani.com/opensearch",
        "headers": {"Authorization": "Bearer YOUR_API_KEY"},
        "require_approval": "never",  # or "always" to approve each tool call
    }],
    input="What can you do with these tools?",
)
print(response.output_text)

Messages API MCP connector (Python SDK).

import anthropic

client = anthropic.Anthropic()
response = client.beta.messages.create(
    model="claude-sonnet-4-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "What can you do with these tools?"}],
    mcp_servers=[{
        "type": "url",
        "url": "https://market.oshaani.com/opensearch",
        "name": "opensearch",
        "authorization_token": "YOUR_API_KEY",
    }],
    betas=["mcp-client-2025-04-04"],
)
print(response.content)

Official MCP Python SDK 2.x (pip install mcp); works inside any agent framework.

import asyncio

from mcp import ClientSession
from mcp.client.streamable_http import create_mcp_http_client, streamable_http_client


async def main():
    headers = {"Authorization": "Bearer YOUR_API_KEY"}
    async with create_mcp_http_client(headers=headers) as http:
        async with streamable_http_client("https://market.oshaani.com/opensearch", http_client=http) as (read, write, *_):
            async with ClientSession(read, write) as session:
                await session.initialize()
                tools = await session.list_tools()
                print([tool.name for tool in tools.tools])


asyncio.run(main())

Quick check from a terminal: lists the tools without charging credits.

curl -s https://market.oshaani.com/opensearch \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "MCP-Protocol-Version: 2025-06-18" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Connection settings

Entered once per connection on market.oshaani.com. Secrets are encrypted and never shown again or sent to agents.

Setting	Type	Description
OpenSearch URL `url` required	string (uri)	e.g. https://search-mydomain.eu-west-1.es.amazonaws.com or your self-managed cluster min length 1, max length 2083
Username `username`	string	An internal user with read access (Amazon OpenSearch Service: enable fine-grained access control)
Password `password`	string
Verify TLS certificate `verify_tls`	boolean default true

Tools (6)

`cluster_health` read-only

Get cluster health, version and node/shard counts

No arguments.

`list_indices` read-only

List indices with health, document count and size

Argument	Type	Description
`pattern`	string default "*"	Index, alias, data stream or pattern, e.g. logs-* or orders,customers max length 1000, pattern ^[^/\\?#\s\"<>\|]+$
`include_hidden`	boolean default false	Include system/hidden indices (names starting with '.')
`limit`	integer default 200	min 1, max 1000

`get_mapping` read-only

Get the field names and types of an index

Argument	Type	Description
`index` required	string	Index, alias, data stream or pattern, e.g. logs-* or orders,customers max length 1000, pattern ^[^/\\?#\s\"<>\|]+$

`search` read-only

Search documents with Query DSL or a query string, with optional aggregations

Argument	Type	Description
`index` required	string	Index, alias, data stream or pattern, e.g. logs-* or orders,customers max length 1000, pattern ^[^/\\?#\s\"<>\|]+$
`query`	object	Query DSL object, e.g. {"match": {"message": "timeout"}}
`query_string`	string	Lucene query string, e.g. 'status:500 AND service:api' (used when query is omitted)
`size`	integer default 10	Number of hits to return; 0 for aggregations only min 0, max 100
`sort`	array of object	e.g. [{"@timestamp": "desc"}]
`source_fields`	array of string	Only return these fields of each document
`aggs`	object	Aggregations object

`count` read-only

Count documents matching a query

Argument	Type	Description
`index` required	string	Index, alias, data stream or pattern, e.g. logs-* or orders,customers max length 1000, pattern ^[^/\\?#\s\"<>\|]+$
`query`	object	Query DSL object, e.g. {"match": {"message": "timeout"}}

`get_document` read-only

Get a single document by ID

Argument	Type	Description
`index` required	string	pattern ^[^/\\?#\s\"<>\|,*]+$
`document_id` required	string	min length 1, max length 512

Billing & errors

Each successful tool call costs 1 oshaani.com credit. initialize, tools/list, failed calls and timeouts are free.

JSON-RPC code	Meaning
`-32054` (HTTP 401)	Missing, unknown or revoked API key
`-32053` (HTTP 404)	No OpenSearch connection configured for your organisation, or the connection ID is wrong
`-32055` (HTTP 403)	Connection disabled or origin not allowed
`-32052` (HTTP 429)	Rate limit reached; retry after a minute
`-32050`	Not enough oshaani.com credits for the call
`-32051`	Billing temporarily unavailable; the call was not run

Errors from OpenSearch itself (bad IDs, permissions) come back as tool results with isError: true so the agent can read and correct them. See the OpenSearch API documentation.

OpenSearch MCP Search

Quick start

Agent configuration

Connection settings

Tools (6)

cluster_health read-only

list_indices read-only

get_mapping read-only

search read-only

count read-only

get_document read-only