AI agents call list_roles to retrieve information from Taiga MCP Bridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves role information from the Taiga platform without making any changes. It has no side effects and fits the 'Read' category. Severity is low because listing roles is a simple data retrieval operation with minimal blast radius—it only exposes project role definitions without enabling destructive, financial, or execution-based attacks.
From the tool's definition Tool name 'list_roles' indicates a retrieval operation. The description is empty, but the name strongly suggests querying/listing role data without modification.
Documented attack patterns abuse exactly the kind of access list_roles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Taiga MCP Bridge, and nothing reaches the server without passing your rules. This is the rule we recommend for list_roles:
{
"version": "1",
"default": "deny",
"tools": {
"list_roles": {}
}
}list_roles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list_roles. It is categorised as a Read tool in the Taiga MCP Bridge MCP Server, which means it retrieves data without modifying state.
Register the Taiga MCP Bridge MCP server in PolicyLayer and add a rule for list_roles: 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 Taiga MCP Bridge. Nothing to install.
list_roles 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 list_roles 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 list_roles. 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.
list_roles is provided by the Taiga MCP Bridge MCP server (talhaorak/pytaiga-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 94 Taiga MCP Bridge tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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94 Taiga MCP Bridge tools catalogued and risk-classified — across an index of 42,500+ MCP servers.