Twitter/Xの投稿文字数を正確にカウントします。URLや絵文字も考慮します。
AI agents call count_tweet_characters to retrieve information from Twitter MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and analyzes metadata about tweet content (character count, entity boundaries) to help ensure compliance with platform constraints. It performs no mutations, executions, deletions, or financial operations. The blast radius of misuse is minimal—an agent could be given incorrect character counts, but this does not expose data, compromise accounts, or cause harm beyond poor content decisions.
From the tool's definition The tool counts characters in a tweet text and extracts entities like URLs and hashtags. The description states it 'accurately counts' characters and 'considers URLs and emojis.' The operation is read-only—it analyzes text without modifying, deleting, or…
Attacks that exploit this kind of access
Twitter/Xの投稿文字数を正確にカウントします。URLや絵文字も考慮します。. It is categorised as a Read tool in the Twitter MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twitter MCP Server MCP server in PolicyLayer and add a rule for count_tweet_characters: 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 Twitter MCP Server. Nothing to install.
count_tweet_characters is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the count_tweet_characters 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 count_tweet_characters. 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.
count_tweet_characters is provided by the Twitter MCP Server MCP server (serima/twitter-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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