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Mailcheck

by OOMOL · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ✓ Security Clean
22
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1
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Install in OpenClaw
/install oo-mailcheck
Description
Mailcheck (usercheck.com). Use this skill for ANY Mailcheck request — searching and reading data. Whenever a task involves Mailcheck, use this skill instead...
README (SKILL.md)

Mailcheck

Operate Mailcheck through your OOMOL-connected account. This skill calls the mailcheck connector with the oo CLI; OOMOL injects credentials server-side, so you never handle raw tokens.

Category: Communication, Security & Identity. Exposes 3 action(s).

Running an action

Assume the user has already installed the oo CLI, signed in, and connected Mailcheck. Do not run oo auth login or open the connection URL proactively — just run the action. Fall back to First-time setup only when a command actually fails with an auth or connection error.

1. Inspect the contract to get the authoritative input/output schema before building a payload:

oo connector schema "mailcheck" --action "\x3Caction_name>"

2. Run the action with a JSON payload that matches the input schema:

oo connector run "mailcheck" --action "\x3Caction_name>" --data '\x3Cjson>' --json
  • --data takes a JSON object string or @path/to/file.json; omit it to send {}.
  • The response is { "data": ..., "meta": { "executionId": "..." } }; the execution id lives under meta.executionId.

Each action below links to a reference file with its purpose and exact commands. Read the linked file, then fetch the live schema with oo connector schema before constructing --data.

Available actions

  • get_status — Retrieve UserCheck account information, plan details, and current API usage.
  • validate_domain — Validate a domain and return UserCheck domain-level risk and MX signals.
  • verify_email — Validate a single email address and return UserCheck deliverability and risk signals.

Safety

  • Read actions (get / list / search) are safe to run directly.
  • Create, update, send, or post actions change Mailcheck state — confirm the exact payload and effect with the user before running.
  • Delete or remove actions are destructive — always confirm the target and get explicit approval first.

First-time setup

These are one-time steps — do not repeat them on every call. Run a step only when a command fails for the matching reason.

  • oo: command not found — install the oo CLI (other platforms: \x3Chttps://cli.oomol.com/install-guide.md>):

    curl -fsSL https://cli.oomol.com/install.sh | bash    # macOS / Linux
    
    irm https://cli.oomol.com/install.ps1 | iex           # Windows PowerShell
    
  • Not signed in / authentication error — sign in to your OOMOL account once:

    oo auth login
    
  • scope_missing / credential_expired / app_not_ready / app_not_found — Mailcheck is not connected, or the connection expired or lacks a scope. Connect once (auth type: API key) at:

    https://console.oomol.com/app-connections?provider=mailcheck
    
  • HTTP 402 / OOMOL_INSUFFICIENT_CREDIT — billing stop. Recharge at https://console.oomol.com/billing/token-recharge before retrying.

Resources

Usage Guidance
Install only if you intend to use OOMOL's oo CLI with a connected Mailcheck/UserCheck account. Be aware that checking email addresses, domains, or account status sends those lookup values through the OOMOL Mailcheck connector, and review the oo CLI install script source if your environment restricts remote shell installers.
Capability Tags
requires-sensitive-credentials
Capability Assessment
Purpose & Capability
The stated purpose matches the artifacts: it exposes Mailcheck/UserCheck actions for email verification, domain validation, and account status lookup through the oo CLI.
Instruction Scope
The trigger language says to use the skill for any Mailcheck request, which is broad, but the actual actions are limited and the instructions require schema inspection before running connector calls.
Install Mechanism
The skill includes first-time setup guidance to install the oo CLI via a remote install script only if the command is missing; this is disclosed and common for CLI connector skills, but users should understand the installer source before running it.
Credentials
Allowed tooling is scoped to Bash commands beginning with oo, and the skill does not request broad filesystem, shell, or network authority beyond the connector workflow.
Persistence & Privilege
No background persistence, local credential harvesting, hidden storage, or privilege escalation instructions were found; credentials are described as server-side OOMOL connector credentials.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install oo-mailcheck
  3. After installation, invoke the skill by name or use /oo-mailcheck
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
- Initial release of the `oo-mailcheck` skill for operating Mailcheck/UserCheck through an OOMOL-connected account. - Adds email verification for a single address, returning deliverability and risk signals. - Adds domain validation with domain-level risk assessment and MX-related signals. - Adds account status lookup for UserCheck account information, plan details, and current API usage. - Uses the `oo` CLI connector workflow with server-side credential injection, avoiding direct handling of raw API tokens.
Metadata
Slug oo-mailcheck
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Mailcheck?

Mailcheck (usercheck.com). Use this skill for ANY Mailcheck request — searching and reading data. Whenever a task involves Mailcheck, use this skill instead... It is an AI Agent Skill for Claude Code / OpenClaw, with 22 downloads so far.

How do I install Mailcheck?

Run "/install oo-mailcheck" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Mailcheck free?

Yes, Mailcheck is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does Mailcheck support?

Mailcheck is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Mailcheck?

It is built and maintained by OOMOL (@oomol); the current version is v1.0.0.

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