Altcoin Season Index: Real-time blockchaincenter-style Altcoin Season Index, computed in-house from CoinGecko top-50 minus stables and BTC/ETH derivatives. Returns: 90d index 0–100, 30d index, rotation acceleration delta, regime classification (BTC season / BTC-leaning / altseason-leaning / altse...
Part of the Agent Einstein — Autonomous Crypto Intelligence server.
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AI agents call altcoin_season_index to retrieve information from Agent Einstein — Autonomous Crypto Intelligence 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 altcoin_season_index 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": {
"altcoin_season_index": {}
}
}See the full Agent Einstein — Autonomous Crypto Intelligence policy for all 72 tools.
These attack patterns abuse exactly the kind of access altcoin_season_index 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.
Altcoin Season Index: Real-time blockchaincenter-style Altcoin Season Index, computed in-house from CoinGecko top-50 minus stables and BTC/ETH derivatives. Returns: 90d index 0–100, 30d index, rotation acceleration delta, regime classification (BTC season / BTC-leaning / altseason-leaning / altseason / extreme), top 5 outperformers, worst 5 underperformers, BTC anchor return, plus the contrarian sizing rule the self-trade engine applies based on the regime (alt × 0.4–1.3, BTC × 0.7–1.0). Use to time alt rotation, time BTC accumulation, or as a contrarian de-risk gate at index ≥75.. It is categorised as a Read tool in the Agent Einstein — Autonomous Crypto Intelligence MCP Server, which means it retrieves data without modifying state.
Register the Agent Einstein — Autonomous Crypto Intelligence MCP server in PolicyLayer and add a rule for altcoin_season_index: 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 Agent Einstein — Autonomous Crypto Intelligence. Nothing to install.
altcoin_season_index 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 altcoin_season_index 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 altcoin_season_index. 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.
altcoin_season_index is provided by the Agent Einstein — Autonomous Crypto Intelligence MCP server (https://emc2ai.io/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 72 Agent Einstein — Autonomous Crypto Intelligence tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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