tengu_copilot_voter_ic_drift
Per-voter IC drift breakdown — pinpoints WHICH of the 12 voters in the ensemble is decaying. The blended-IC drift tool tells you IF the ensemble is decaying; this tells you WHICH voter. CALL THIS when the user asks 'which voter is the problem?', 'why did the model decay?', 'should we re-weight?'....
This record as markdown: /tools/tengu-mcp/tengu-copilot-voter-ic-drift.md
What tengu_copilot_voter_ic_drift does on Tengu
AI agents call tengu_copilot_voter_ic_drift to retrieve information from Tengu without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why tengu_copilot_voter_ic_drift is rated Low
Even though tengu_copilot_voter_ic_drift only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs tengu_copilot_voter_ic_drift safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Tengu, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For tengu_copilot_voter_ic_drift, this is the rule to start with:
tengu_copilot_voter_ic_drift is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Tengu, apply this rule, and every tengu_copilot_voter_ic_drift call is checked against it from then on.
Questions about tengu_copilot_voter_ic_drift
Per-voter IC drift breakdown — pinpoints WHICH of the 12 voters in the ensemble is decaying. The blended-IC drift tool tells you IF the ensemble is decaying; this tells you WHICH voter. CALL THIS when the user asks 'which voter is the problem?', 'why did the model decay?', 'should we re-weight?'. Critically distinguishes 'data_silent' (voter source offline → not the voter's fault) from 'real decay' (voter producing scores that no longer predict). Returns per-voter live IC, causal-marginal-ATE baseline, ic_ratio, drift severity, current weight, and operator-suggested weight delta (capped ±0.05 absolute per cycle). It is categorised as a Read tool in the Tengu MCP Server, which means it retrieves data without modifying state.
Register the Tengu MCP server in PolicyLayer and add a rule for tengu_copilot_voter_ic_drift: 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 Tengu. Nothing to install.
tengu_copilot_voter_ic_drift 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 tengu_copilot_voter_ic_drift 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 tengu_copilot_voter_ic_drift. 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.
tengu_copilot_voter_ic_drift is provided by the Tengu MCP server (Hlobo-dev/tengu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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