$ ~/registry/skill/composiohq-composio-skills-agent-mail-automation

SKILL

agent-mail-automation

Name: agent-mail-automation
Author: Composio

Automate Agent Mail workflows through Rube MCP with schema-aware tool discovery.

Stars

★ 67,763

Source

GitHub

Updated

2026-07-15

// securityCaution

Prompt only, no code
Open source
Community-trusted· 64.7k

Summary

This skill appears to be prompt/documentation-style, does not directly require local secrets or local code execution, and comes from a widely adopted open-source repository, so overall risk is relatively low. However, it depends on remote Rube MCP and an external Agent Mail connection, so real use may involve email-related data flowing through third-party services and should be reviewed for egress scope and connection permissions.

CredentialsCaution

The material says 'No API keys needed', but it also requires an ACTIVE `agent_mail` connection via `RUBE_MANAGE_CONNECTIONS` and completing an auth link, which means it relies on third-party account authorization rather than being truly credential-free; this creates the usual risk of misuse or overbroad access to a mail account.

Network egressCaution

It explicitly requires adding the remote MCP endpoint `https://rube.app/mcp` and using Composio/Rube to discover and execute mail tools; task arguments, session data, and mail-operation-related content are therefore likely sent to that third-party service. The endpoint is aligned with the stated function, but this is still a standard external data-egress case.

Code executionLow risk

Based on the material, this is prompt/workflow documentation and does not include local install scripts, shell commands, or direct local code execution requirements; actions are mainly performed through remote MCP tool calls, with no clear local-execution red flags beyond the stated purpose.

Data accessCaution

Its stated purpose is to 'Automate Agent Mail operations' and it supports bulk operations and pagination, implying that once the connection is active, it may access or manipulate mail-related data; the documentation does not define a least-privilege scope, so it should be treated as having standard but sensitive access to email data.

Supply chainLow risk

The source is a GitHub open-source repository with very high community adoption (64.7k stars), which materially lowers supply-chain risk; the provided material itself is auditable README/prompt content. Remaining caveats are the unspecified license, unknown maintenance status, and the fact that the actual Rube/Composio server-side logic is outside this material.

Recommendations

Before authorizing the `agent_mail` connection, verify the exact mail permissions requested by Composio/Rube and prefer a least-privilege account.
Avoid sending unnecessary sensitive email content, contact data, or attachment details in tool arguments.
Review the data handling, logging retention, and third-party sharing policies for `rube.app` and related Composio documentation before use.
If used with a production mail account, first validate visible data scope and permitted actions in a test account.

Audited by: gpt-5.4 · 2026-06-17

// install

Copy the install command and let the AI configure it · recommended for beginners

Please install the "agent-mail-automation" skill from askskill:
1. Download https://raw.githubusercontent.com/ComposioHQ/awesome-claude-skills/master/composio-skills/agent-mail-automation/SKILL.md
2. Save it as ~/.claude/skills/agent-mail-automation/SKILL.md
3. Reload skills and tell me it's ready

// download

Download SKILL.mdInstall manifest ↗

// docs

Agent Mail Automation via Rube MCP

Automate Agent Mail operations through Composio's Agent Mail toolkit via Rube MCP.

Toolkit docs: composio.dev/toolkits/agent_mail

Prerequisites

Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
Active Agent Mail connection via RUBE_MANAGE_CONNECTIONS with toolkit agent_mail
Always call RUBE_SEARCH_TOOLS first to get current tool schemas

Setup

Get Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.

Verify Rube MCP is available by confirming RUBE_SEARCH_TOOLS responds
Call RUBE_MANAGE_CONNECTIONS with toolkit agent_mail
If connection is not ACTIVE, follow the returned auth link to complete setup
Confirm connection status shows ACTIVE before running any workflows

Tool Discovery

Always discover available tools before executing workflows:

RUBE_SEARCH_TOOLS
queries: [{use_case: "Agent Mail operations", known_fields: ""}]
session: {generate_id: true}

This returns available tool slugs, input schemas, recommended execution plans, and known pitfalls.

Core Workflow Pattern

Step 1: Discover Available Tools

RUBE_SEARCH_TOOLS
queries: [{use_case: "your specific Agent Mail task"}]
session: {id: "existing_session_id"}

Step 2: Check Connection

RUBE_MANAGE_CONNECTIONS
toolkits: ["agent_mail"]
session_id: "your_session_id"

Step 3: Execute Tools

RUBE_MULTI_EXECUTE_TOOL
tools: [{
  tool_slug: "TOOL_SLUG_FROM_SEARCH",
  arguments: {/* schema-compliant args from search results */}
}]
memory: {}
session_id: "your_session_id"

Known Pitfalls

Always search first: Tool schemas change. Never hardcode tool slugs or arguments without calling RUBE_SEARCH_TOOLS
Check connection: Verify RUBE_MANAGE_CONNECTIONS shows ACTIVE status before executing tools
Schema compliance: Use exact field names and types from the search results
Memory parameter: Always include memory in RUBE_MULTI_EXECUTE_TOOL calls, even if empty ({})
Session reuse: Reuse session IDs within a workflow. Generate new ones for new workflows
Pagination: Check responses for pagination tokens and continue fetching until complete

Quick Reference

Operation	Approach
Find tools	`RUBE_SEARCH_TOOLS` with Agent Mail-specific use case
Connect	`RUBE_MANAGE_CONNECTIONS` with toolkit `agent_mail`
Execute	`RUBE_MULTI_EXECUTE_TOOL` with discovered tool slugs
Bulk ops	`RUBE_REMOTE_WORKBENCH` with `run_composio_tool()`
Full schema	`RUBE_GET_TOOL_SCHEMAS` for tools with `schemaRef`

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