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35 MCP servers and Agent skills related to message, each with install commands, source and popularity data, ready to paste into Cursor, Claude Code and other clients.

Telegram Compose

v1.0.4

SkillClawHub6.4k

io.clawhub.tmchow/telegram-compose

Format and deliver rich Telegram messages with HTML formatting via direct Telegram API. Auto-invoked by the main session for substantive Telegram output — no other skills need to call it. Decision rule: If your Telegram reply is >3 lines or contains structured data (lists, stats, sections, reports), spawn this as a Haiku sub-agent to format and send. Short replies (<3 lines) go directly via OpenClaw message tool. Handles: research summaries, alerts, status updates, reports, briefings, notifications — anything with visual hierarchy.

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ClickSend

v1.2.6

SkillClawHub5.1k

io.clawhub.byungkyu/clicksend

ClickSend API integration with managed authentication. Send SMS, MMS, and voice messages, manage contacts, lists, verified email addresses, and account configuration. All write operations require explicit user approval. Sending SMS/MMS/voice delivers messages to real recipients and may incur costs — confirm the recipient, content, and send timing before executing. Email address management modifies verified sender identities on the account. Use this skill when users want to send text messages, make voice calls, manage contact lists, or track message delivery. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway). Calls run through the `maton` CLI with OAuth login, or over raw HTTP with a Maton API key where the CLI cannot be installed. Every call is authenticated as the user's connection and reaches only what that connection's authorization allows, which the provider enforces on every request; the endpoints documented here are the ones this skill uses, and any other en

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Error Guard — Control‑Plane Safety

v1.0.0

SkillClawHub4.2k

io.clawhub.amar1432/error-guard

System safety and control-plane skill that prevents agent deadlocks and freezes. Provides non-LLM control commands to inspect task state, flush message queues, cancel long-running work, and recover safely without restarting the container. Use when implementing or operating long-running tasks, sub-agents, benchmarks, background monitors (e.g., Moltbook, PNR checks), or when the system becomes unresponsive and needs immediate recovery controls.

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Prompt injection detection skill

v1.0.0

SkillClawHub2.6k

io.clawhub.zskyx/detect-injection

Two-layer content safety for agent input and output. Use when (1) a user message attempts to override, ignore, or bypass previous instructions (prompt injection), (2) a user message references system prompts, hidden instructions, or internal configuration, (3) receiving messages from untrusted users in group chats or public channels, (4) generating responses that discuss violence, self-harm, sexual content, hate speech, or other sensitive topics, or (5) deploying agents in public-facing or multi-user environments where adversarial input is expected.

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