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Use this profile to copy client config, check auth requirements, review tools and resources, and compare related MCP servers before adding it to an AI client.
npx -y postals-mcp{
"POSTALS_API_KEY": "YOUR_SECRET_VALUE",
"POSTALS_SENDER_NAME": "YOUR_VALUE_HERE",
"POSTALS_SENDER_ADDRESS": "YOUR_VALUE_HERE",
"POSTALS_SENDER_CITY": "YOUR_VALUE_HERE",
"POSTALS_SENDER_STATE": "YOUR_VALUE_HERE",
"POSTALS_SENDER_ZIP": "YOUR_VALUE_HERE",
"POSTALS_DEFAULT_CARD_IMAGE": "YOUR_VALUE_HERE",
"POSTALS_HANDWRITING_STYLE": "YOUR_VALUE_HERE",
"POSTALS_DAILY_LIMIT": "YOUR_VALUE_HERE",
"POSTALS_TEST_MODE": "YOUR_VALUE_HERE",
"CLOUDFLARE_ACCOUNT_ID": "YOUR_VALUE_HERE",
"CLOUDFLARE_API_TOKEN": "YOUR_SECRET_VALUE"
}Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.
{
"mcpServers": {
"io-github-coopergwrenn-postals-mcp": {
"command": "npx",
"args": [
"-y",
"postals-mcp"
],
"env": {
"POSTALS_API_KEY": "YOUR_SECRET_VALUE",
"POSTALS_SENDER_NAME": "YOUR_VALUE_HERE",
"POSTALS_SENDER_ADDRESS": "YOUR_VALUE_HERE",
"POSTALS_SENDER_CITY": "YOUR_VALUE_HERE",
"POSTALS_SENDER_STATE": "YOUR_VALUE_HERE",
"POSTALS_SENDER_ZIP": "YOUR_VALUE_HERE",
"POSTALS_DEFAULT_CARD_IMAGE": "YOUR_VALUE_HERE",
"POSTALS_HANDWRITING_STYLE": "YOUR_VALUE_HERE",
"POSTALS_DAILY_LIMIT": "YOUR_VALUE_HERE",
"POSTALS_TEST_MODE": "YOUR_VALUE_HERE",
"CLOUDFLARE_ACCOUNT_ID": "YOUR_VALUE_HERE",
"CLOUDFLARE_API_TOKEN": "YOUR_SECRET_VALUE"
}
}
}
}~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.jsonNo remote HTTP endpoint is advertised. Use the package or stdio setup shown in Install.
postals-mcp is an MCP server for Send physical handwritten postcards from any AI agent. Real pen & ink, USPS, $4.99/card.. It supports STDIO transport.
Use the generated config in Install. This server runs with npx -y postals-mcp; add any required environment variables before starting your client.
Choose the Claude Desktop tab in Install and copy the config for npx -y postals-mcp. Add required environment variables before starting Claude Desktop.
Choose the Claude Code tab in Install and copy the config for npx -y postals-mcp. Add required environment variables before starting Claude Code.
Choose the Codex tab in Install and copy the config for npx -y postals-mcp. Add required environment variables before starting Codex.
Choose the Cursor or VS Code tab in Install and copy the config for npx -y postals-mcp. Add required environment variables before starting Cursor or VS Code.
postals-mcp uses STDIO transport. Use the package or command config in Install.
postals-mcp inventory is listed when the MCP endpoint exposes tools, resources, or prompts. Some servers require auth first.
postals-mcp is marked with Auth required by registry metadata auth. You may need provider login, an API key, a bearer token, or a session header.
| Package | Registry | Version | Inputs |
|---|---|---|---|
postals-mcpstdio | npm | 1.0.0 | Env: POSTALS_API_KEY required secret Env: POSTALS_SENDER_NAME Env: POSTALS_SENDER_ADDRESS Env: POSTALS_SENDER_CITY Env: POSTALS_SENDER_STATE Env: POSTALS_SENDER_ZIP Env: POSTALS_DEFAULT_CARD_IMAGE Env: POSTALS_HANDWRITING_STYLE Env: POSTALS_DAILY_LIMIT Env: POSTALS_TEST_MODE Env: CLOUDFLARE_ACCOUNT_ID Env: CLOUDFLARE_API_TOKEN secret |