Set Telegram Business work hours — days and time ranges when your business is open. Requires Telegram Business subscription. Pass clear=true to disable the work hours display entirely.
AI agents use telegram-set-business-hours to create or update resources in MCP-Telegram — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP-Telegram environment.
This tool modifies user account configuration (business hours) rather than accessing data (Read), executing code (Execute), permanently deleting data (Destructive), or moving money (Financial). The ability to set or clear work hours is a write operation.
From the tool's definition Tool description states it 'Set[s] Telegram Business work hours' and allows passing 'clear=true to disable the work hours display entirely' — these are reversible modifications to account settings/metadata.
Documented attack patterns abuse exactly the kind of access telegram-set-business-hours gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-Telegram, and nothing reaches the server without passing your rules. This is the rule we recommend for telegram-set-business-hours:
{
"version": "1",
"default": "deny",
"tools": {
"telegram-set-business-hours": {
"limits": [
{
"counter": "telegram-set-business-hours_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}telegram-set-business-hours 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.
Free to start. No card required.
Set Telegram Business work hours — days and time ranges when your business is open. Requires Telegram Business subscription. Pass clear=true to disable the work hours display entirely. It is categorised as a Write tool in the MCP-Telegram MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP-Telegram MCP server in PolicyLayer and add a rule for telegram-set-business-hours: 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 MCP-Telegram. Nothing to install.
telegram-set-business-hours 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 telegram-set-business-hours 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 telegram-set-business-hours. 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.
telegram-set-business-hours is provided by the MCP-Telegram MCP server (mcp-telegram/mcp-telegram). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP-Telegram, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
181 MCP-Telegram tools catalogued and risk-classified — across an index of 43,000+ MCP servers.