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Postmark
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Build prompt
Build the connector at https://tendle.ai/connectors/postmark.Build a connector from https://tendle.ai/connectors/postmark/mcp. Use only this address for every call; don't look Postmark up anywhere else. It signs in with OAuth, not an API key: authorize URL https://auth.tendle.ai/postmark/authorize, token URL https://auth.tendle.ai/token, dynamic client registration at https://auth.tendle.ai/register, scopes `mcp`, PKCE with S256, as a public client with no client secret.If your agent says it couldn’t connect, try again. Sign-in sometimes takes a second try.
- 01Open your agent and start a new chat.
- 02Paste the prompt and send it. Your agent builds the connector.
- 03Sign in to Postmark when your agent asks.