Tell agents whether now is a good or bad time to transact, based on historical gas patterns. Compares current gas to 24-hour and 7-day averages, identifies the cheapest hours of the day, and estimates reference transaction costs. Args: api_key: Your PreFlyte API key (required). chain: Chain name ...
Risk signalsHandles credentials or secrets (api_key)
Part of the PreFlyte — DeFi Financial Intelligence for AI Agents server.
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AI agents call gas_timing to retrieve information from PreFlyte — DeFi Financial Intelligence for AI Agents 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 gas_timing 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": {
"gas_timing": {}
}
}See the full PreFlyte — DeFi Financial Intelligence for AI Agents policy for all 9 tools.
These attack patterns abuse exactly the kind of access gas_timing 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.
Tell agents whether now is a good or bad time to transact, based on historical gas patterns. Compares current gas to 24-hour and 7-day averages, identifies the cheapest hours of the day, and estimates reference transaction costs. Args: api_key: Your PreFlyte API key (required). chain: Chain name — "ethereum" or "arbitrum". Returns: Dictionary with current gas, 24h/7d context, timing assessment with cheapest hours, and reference transaction costs in USD.. It is categorised as a Read tool in the PreFlyte — DeFi Financial Intelligence for AI Agents MCP Server, which means it retrieves data without modifying state.
Register the PreFlyte — DeFi Financial Intelligence for AI Agents MCP server in PolicyLayer and add a rule for gas_timing: 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 PreFlyte — DeFi Financial Intelligence for AI Agents. Nothing to install.
gas_timing 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 gas_timing 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 gas_timing. 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.
gas_timing is provided by the PreFlyte — DeFi Financial Intelligence for AI Agents MCP server (https://mcp.preflyte.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 9 PreFlyte — DeFi Financial Intelligence for AI Agents tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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