Can I use Resend as a CLI?

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

Can I expose Resend through MCP?

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

Where are Resend credentials stored?

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

Can I deny write access for Resend MCP tools?

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

productivity

Resend MCP, CLI, and Lua Integration for AI Agents

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

10 functions 5 read 5 write API key auth

Submit Resend feedback View package source

Resend 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: resend
route_slug: resend
package: resend
auth_strategy: api_key API key
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. Resend CLIHeadless setup and direct function calls. Resend 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.

Resend MCP Client Matrix

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

Claude Code Resend MCP setup for Claude Code. Cursor Resend MCP setup for Cursor. Codex Resend MCP setup for Codex. OpenAI Agents Resend MCP setup for OpenAI Agents SDK. Claude Agent SDK Resend MCP setup for Claude Agent SDK. Vercel AI SDK Resend MCP setup for Vercel AI SDK. LangChain Resend MCP setup for LangChain. LangGraph Resend MCP setup for LangGraph. CrewAI Resend MCP setup for CrewAI. MCP clients Resend MCP setup for Generic MCP Clients.

Resend CLI Matrix

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

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

Function Catalog

Function	Type	Parameters	Description
`resend.resend_send_email`	Write `write`	10	Send an email through Resend. Supports HTML and plain-text content, CC, BCC, reply-to, tags for categorization, and custom email headers. Returns the sent email object including its ID.
`resend.resend_get_email`	Read `read`	1	Retrieve a single email by its ID from Resend. Returns the email object including sender, recipient, subject, created_at, and delivery status.
`resend.resend_list_emails`	Read `read`	2	List emails from Resend. Supports pagination with a limit and cursor token. Returns an array of email objects and a pagination token for the next page.
`resend.resend_create_api_key`	Write `write`	3	Create a new API key in Resend. You can set a permission scope (full_access or sending_access) and optionally restrict the key to a specific domain. Returns the created API key object including the key value.
`resend.resend_list_api_keys`	Read `read`	0	List all API keys in the Resend account. Returns an array of API key objects with their names, permissions, and creation dates. The actual key values are not returned for security reasons.
`resend.resend_create_domain`	Write `write`	2	Create a new domain in Resend. You can optionally specify a region for the domain (us-east-1 or eu-west-1). Returns the created domain object including DNS records that need to be configured.
`resend.resend_get_domain`	Read `read`	1	Retrieve a single domain by its ID from Resend. Returns the domain object including verification status and DNS records.
`resend.resend_list_domains`	Read `read`	0	List all domains in the Resend account. Returns an array of domain objects including their names, verification status, and regions.
`resend.resend_verify_domain`	Write `write`	1	Trigger verification for a domain in Resend. This checks the DNS records for the domain and updates its verification status. Returns the domain object with the updated status.
`resend.resend_create_contact`	Write `write`	5	Create a contact in a Resend audience. Requires the audience ID and the contact's email address. Optionally provide first name, last name, and unsubscribed status. Returns the created contact object.