Can I use Postmark as a CLI?

Yes. KosmoKrator exposes a Postmark CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose Postmark through MCP?

Yes. The KosmoKrator MCP gateway can expose selected Postmark tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are Postmark credentials stored?

Postmark credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for Postmark MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

communication

Postmark MCP, CLI, and Lua Integration for AI Agents

Postmark integration docs for AI agents: MCP gateway setup, Postmark CLI commands, Lua API reference, credentials, and function schemas.

9 functions 7 read 2 write API token auth

Submit Postmark feedback View package source

Postmark for agents

Credentials can be configured manually in web or CLI hosts.

Use this integration from Lua code mode, the headless integrations CLI, or the KosmoKrator MCP gateway. The same package metadata powers all three surfaces.

Machine-Readable Metadata

integration_slug: postmark
route_slug: postmark
package: postmark
auth_strategy: api_token API token
cli_setup_supported: true
cli_runtime_supported: true
mcp_gateway_supported: true
lua_supported: true
supports_multi_account: true

Quick Links

Lua APIAgent-facing namespace and function reference. Postmark CLIHeadless setup and direct function calls. Postmark MCPMCP gateway setup for external clients. Submit feedbackReport missing tools, auth problems, wrong docs, or runtime issues. ContributeAdd tools or improve metadata in the integrations repo.

Postmark MCP Client Matrix

Use these pages when a specific agent client or framework needs copy-pasteable MCP setup for Postmark.

Postmark CLI Matrix

Use these pages for direct Postmark CLI workflows in scripts, CI, cron, and agent wrappers.

CI Postmark CLI for CI. Cron Jobs Postmark CLI for cron jobs. Shell Scripts Postmark CLI for shell scripts. Headless Automation Postmark CLI for headless automation. Coding Agents Postmark CLI for coding agents.

Function Catalog

Function	Type	Parameters	Description
`postmark.postmark_list_messages`	Read `read`	7	List outbound messages from Postmark. Supports filtering by recipient, sender, subject, status, and tag.
`postmark.postmark_get_message`	Read `read`	1	Get details for a specific Postmark outbound message including body, recipients, and delivery status.
`postmark.postmark_send_email`	Write `write`	9	Send an email through Postmark. Requires To, From, and Subject. Provide either TextBody or HtmlBody.
`postmark.postmark_send_template`	Write `write`	11	Send an email using a Postmark template. Provide either a TemplateId or TemplateAlias along with the template model data.
`postmark.postmark_get_delivery_stats`	Read `read`	0	Get email delivery statistics for your Postmark server, including counts of sent, bounced, and spam complaints.
`postmark.postmark_list_templates`	Read `read`	2	List all email templates in Postmark. Supports pagination.
`postmark.postmark_get_template`	Read `read`	1	Get details for a Postmark email template including subject, HTML body, and text body.
`postmark.postmark_list_servers`	Read `read`	3	List servers in the Postmark account. Supports filtering by name and pagination.
`postmark.postmark_get_current_user`	Read `read`	0	Get the current Postmark server info including name, settings, and delivery stats. Useful as a health check.