AI agents call github.tags to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves git tag information from a repository. It performs no writes, deletions, executions, or financial operations. The explicit 'Read-only' designation confirms this is a simple data retrieval operation with no side effects. Severity is low because exposing git tag information carries minimal security risk.
From the tool's definition Tool description explicitly states 'Git tags of a repository (name + commit sha), most recent first' and 'Read-only; no caller key needed.' It retrieves repository metadata without modification.
Attacks that exploit this kind of access
Git tags of a repository (name + commit sha), most recent first. Pair with github.releases for published releases. Read-only; no caller key needed. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for github.tags: 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. Nothing to install.
github.tags 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 github.tags 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 github.tags. 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.
github.tags is provided by the MCP server (@2sio/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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