get_hurst
Hurst exponent via rescaled range (R/S) computed across 3 timescales (7d/30d/full). $0.12
This record as markdown: /tools/de-carbon-cashmere-api-crypto-intelligence/get-hurst.md
What get_hurst does on Crypto Intelligence
AI agents call get_hurst to retrieve information from Crypto Intelligence without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
coin | string | Yes | Coin symbol (BTC, ETH, etc.) |
Parameters from the server's own tool schema.
Why get_hurst is rated Low
The Hurst exponent is a read-only statistical analysis tool that computes and returns a mathematical metric across historical time windows. It retrieves or calculates pre-computed analysis without side effects, modifying state, executing external commands, or committing financial transactions. The micropayment cost is a usage fee, not a financial transaction initiated by the tool itself.
From the tool's definition Tool name 'get_hurst' and description 'Hurst exponent via rescaled range (R/S) computed across 3 timescales (7d/30d/full)' indicates retrieval of a statistical metric.
Attacks that exploit this kind of access
The rule that runs get_hurst safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crypto Intelligence, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_hurst, this is the rule to start with:
get_hurst 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 Crypto Intelligence, apply this rule, and every get_hurst call is checked against it from then on.
Questions about get_hurst
Hurst exponent via rescaled range (R/S) computed across 3 timescales (7d/30d/full). $0.12. It is categorised as a Read tool in the Crypto Intelligence MCP Server, which means it retrieves data without modifying state.
get_hurst accepts 1 parameter: coin. Required: coin. The full parameter table on this page comes from the server's own tool schema.
Register the Crypto Intelligence MCP server in PolicyLayer and add a rule for get_hurst: 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 Crypto Intelligence. Nothing to install.
get_hurst 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 get_hurst 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 get_hurst. 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.
get_hurst is provided by the Crypto Intelligence MCP server (https://api.carbon-cashmere.de/mcp/sse). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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