Claude.ai provides the simplest way to connect to Tamarind's MCP server with no installation required.

Prerequisites

• Claude.ai account (free or paid)

Setup Steps

1. Go to claude.ai
2. Click on your profile icon → Settings
3. Navigate to Connectors
4. Click Add custom connector
5. Fill in the connector details:
   • Name: Tamarind
   • Remote MCP server URL: https://mcp.tamarind.bio/mcp
6. Expand Advanced settings and enter your Tamarind OAuth credentials (both required):
   • OAuth Client ID: V8apuKVjc88f0FNP
   • OAuth Client Secret: See the Client Secret in the Authentication section above
7. Click Add
8. You'll be redirected to sign in with your Tamarind account and authorize the connection

Once connected, you can use Tamarind tools directly in your Claude.ai conversations!

Add the Tamarind MCP server directly from the command line:

1claude mcp add --transport http tamarind https://mcp.tamarind.bio/mcp \
2  --header "x-api-key:YOUR_API_KEY_HERE"

Replace YOUR_API_KEY_HERE with your API key, then restart Claude Code.

Add Tamarind from the Connectors UI, or edit the configuration file directly.

Connectors UI (recommended)

The same four values used on Claude.ai:

1. Open Settings → Connectors
2. Click Add → Add custom connector
3. Fill in the connector details:
   • Name: Tamarind
   • Remote MCP server URL: https://mcp.tamarind.bio/mcp
4. Expand Advanced settings and enter your Tamarind OAuth credentials (both required):
   • OAuth Client ID: V8apuKVjc88f0FNP
   • OAuth Client Secret: See the Client Secret in the Authentication section above
5. Click Add
6. Sign in with your Tamarind account to authorize the connection

Tamarind then appears in your connectors list, and its tools are available in new conversations.

API Key Authentication (config file)

1. Get your API key from API Key
2. Open your Claude Desktop configuration file:
   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
   • Windows: %APPDATA%\Claude\claude_desktop_config.json
3. Add the Tamarind MCP server configuration:

1{
2  "mcpServers": {
3    "tamarind": {
4      "command": "npx",
5      "args": [
6        "mcp-remote",
7        "https://mcp.tamarind.bio/mcp",
8        "--header",
9        "x-api-key:YOUR_API_KEY_HERE"
10      ]
11    }
12  }
13}

Replace YOUR_API_KEY_HERE with your API key, then restart Claude Desktop.

OAuth Authentication (config file)

1. Get your OAuth credentials from the Authentication section above
2. Open your Claude Desktop configuration file:
   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
   • Windows: %APPDATA%\Claude\claude_desktop_config.json
3. Add the Tamarind MCP server configuration (see below)
4. Restart Claude Desktop
5. The first time you use Tamarind tools, you'll be prompted to authenticate in your browser
6. Log in with your Tamarind account

1{
2  "mcpServers": {
3    "tamarind": {
4      "command": "npx",
5      "args": [
6        "mcp-remote",
7        "https://mcp.tamarind.bio/mcp",
8        "3334",
9        "--static-oauth-client-info",
10        "{\"client_id\":\"V8apuKVjc88f0FNP\",\"client_secret\":\"YOUR_CLIENT_SECRET\"}"
11      ]
12    }
13  }
14}

Replace YOUR_CLIENT_SECRET with your client secret (revealed in the Authentication section above), then restart Claude Desktop. Once connected, you'll see Tamarind appear in your connectors list.

Claude Science registers its own OAuth client, so there are no credentials to paste - leave Advanced settings empty.

Setup Steps

1. Open Settings → Connectors
2. Click Add connector → Remote URL
3. Fill in the connector details:
   • Name: Tamarind
   • Remote MCP server URL: https://mcp.tamarind.bio/mcp
4. Click Add
5. Click Connect, then sign in with your Tamarind account to authorize the connection

Tamarind then appears under Custom in your connectors list, and its tools are available in new conversations.

Connect using API

To set it up, add your API key:

1. Open Settings → Credentials → Add
2. Set Name to TAMARIND_API_KEY
3. Set Value to your API key, copied from API Key

VS Code supports MCP servers through GitHub Copilot Chat. Add the following to .vscode/mcp.json in your workspace (or use Cmd+Shift+P → "MCP: Add Server"):

1{
2  "servers": {
3    "tamarind": {
4      "type": "http",
5      "url": "https://mcp.tamarind.bio/mcp",
6      "headers": {
7        "x-api-key": "${input:tamarind-api-key}"
8      }
9    }
10  },
11  "inputs": [
12    {
13      "type": "promptString",
14      "id": "tamarind-api-key",
15      "description": "Tamarind API Key",
16      "password": true
17    }
18  ]
19}

VS Code will prompt you for the API key on first use. You can then use @tamarind in Copilot Chat to access Tamarind tools.

Refer to the VS Code MCP documentation for more details.

Tamarind Bio is published in the ChatGPT plugin directory. No configuration, API key, or installation is required.

1. Go to chatgpt.com
2. Open Plugins
3. Search for Tamarind Bio
4. Click Install
5. Sign in with your Tamarind account when prompted to authorize the connection

Once connected, Tamarind tools are available directly in your ChatGPT conversations.

Install the published Tamarind Bio plugin in the Codex desktop app. Adding the server by hand is only needed if you installed our plugin repository as a marketplace instead.

Install the plugin (recommended)

1. Open Plugins in the Codex sidebar
2. Search for Tamarind Bio
3. Click Install and complete the authorization prompt

The plugin brings the MCP server and all Tamarind skills with it. Nothing else to configure.

Add the server manually

Use this if you added Tamarind-Bio/tamarind-agent-plugin as a plugin marketplace. That install registers the server, so tamarind appears under MCPs → From plugins, but the entry carries no credentials and its Authenticate button will not connect it. Connect it with an API key instead:

1. Get your API key from API Key
2. Open Settings → Plugins → MCPs → Add server
3. Set Name to tamarind
4. Set Type to Streamable HTTP (the STDIO default is for local servers and will not connect)
5. Set URL to https://mcp.tamarind.bio/mcp
6. Under Headers, add x-api-key with your API key as the value
7. Save, then start a new task so Codex discovers the tools

Codex CLI

1. Set your API key as an environment variable in your shell profile (~/.zshrc or ~/.bashrc):

1export TAMARIND_API_KEY="your-api-key-here"

2. Add the following to ~/.codex/config.toml:

1[mcp_servers.tamarind]
2url = "https://mcp.tamarind.bio/mcp"
3env_http_headers = { "x-api-key" = "TAMARIND_API_KEY" }

3. Launch Codex and use Tamarind tools directly

Antigravity connects with the OAuth credentials above. Add the server to its MCP config, then authorize in the browser - there is nothing to paste back into the editor.

1. Open Settings → Installed MCP Servers and click Open MCP Config
2. Add the Tamarind server:

1{
2  "mcpServers": {
3    "tamarind": {
4      "serverUrl": "https://mcp.tamarind.bio/mcp",
5      "oauth": {
6        "clientId": "V8apuKVjc88f0FNP",
7        "clientSecret": "YOUR_CLIENT_SECRET"
8      }
9    }
10  }
11}

3. Replace YOUR_CLIENT_SECRET with the Client Secret from the Authentication section above, then save the file
4. Back in Installed MCP Servers, click Authenticate next to tamarind
5. Sign in with your Tamarind account to authorize the connection

Until you authorize, the server shows Error: calling "initialize": Unauthorized. That is expected - it means Antigravity has the server but no token yet, and it clears once Authenticate completes.