pin_telegram_message
Pin a message to the top of a Telegram channel or group, or unpin one. A channel\u2019s pinned message is its most valuable real estate and its de-facto call to action. Pinning is SILENT by default (no member notification) \u2014 pass notify:true to ping. To unpin, pass unpin:true; omitting messa...
This record as markdown: /tools/hermoso/pin-telegram-message.md
What pin_telegram_message does on Hermoso
AI agents use pin_telegram_message to create or update resources in Hermoso, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hermoso environment.
Why pin_telegram_message is rated Medium
An AI agent can call pin_telegram_message faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs pin_telegram_message safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pin_telegram_message, this is the rule to start with:
pin_telegram_message stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every pin_telegram_message call is checked against it from then on.
Questions about pin_telegram_message
Pin a message to the top of a Telegram channel or group, or unpin one. A channel\u2019s pinned message is its most valuable real estate and its de-facto call to action. Pinning is SILENT by default (no member notification) \u2014 pass notify:true to ping. To unpin, pass unpin:true; omitting messageId then unpins the most recently pinned message, which is what \u201cunpin\u201d usually means. The bot must be an administrator with pin rights. Free, 0 credits. Needs Telegram connected. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hermoso MCP server in PolicyLayer and add a rule for pin_telegram_message: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hermoso. Nothing to install.
pin_telegram_message is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pin_telegram_message rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for pin_telegram_message. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
pin_telegram_message is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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