ETH Volatility Risk Premium (DVOL minus Parkinson realized vol, 72h). Positive = sell-vol opportunity, negative = buy-vol. Returns regime (LOW/MID/HIGH) and raw audit inputs (DVOL, RV_72h, RV_6h, spot). Live (~60s cache). $0.001 USDC on Base per call.
Part of the RegimeShift server.
Free to start. No card required.
AI agents call eth_vrp to retrieve information from RegimeShift without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though eth_vrp only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"eth_vrp": {}
}
}See the full RegimeShift policy for all 4 tools.
These attack patterns abuse exactly the kind of access eth_vrp gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
ETH Volatility Risk Premium (DVOL minus Parkinson realized vol, 72h). Positive = sell-vol opportunity, negative = buy-vol. Returns regime (LOW/MID/HIGH) and raw audit inputs (DVOL, RV_72h, RV_6h, spot). Live (~60s cache). $0.001 USDC on Base per call.. It is categorised as a Read tool in the RegimeShift MCP Server, which means it retrieves data without modifying state.
Register the RegimeShift MCP server in PolicyLayer and add a rule for eth_vrp: 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 RegimeShift. Nothing to install.
eth_vrp 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 eth_vrp 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 eth_vrp. 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.
eth_vrp is provided by the RegimeShift MCP server (https://mcp.regimeshift.xyz/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 RegimeShift tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.