Detailed financial estimate for a specific lending position — what will I actually earn (or pay) after gas costs? Combines current live rates, gas costs, and historical computed returns to project net yield over a holding period. Args: api_key: Your PreFlyte API key (required). protocol: Protocol...
Risk signalsHandles credentials or secrets (api_key)
Part of the PreFlyte — DeFi Financial Intelligence for AI Agents server.
Free to start. No card required.
AI agents call estimate_net_position 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 estimate_net_position 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": {
"estimate_net_position": {}
}
}See the full PreFlyte — DeFi Financial Intelligence for AI Agents policy for all 9 tools.
These attack patterns abuse exactly the kind of access estimate_net_position 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.
Detailed financial estimate for a specific lending position — what will I actually earn (or pay) after gas costs? Combines current live rates, gas costs, and historical computed returns to project net yield over a holding period. Args: api_key: Your PreFlyte API key (required). protocol: Protocol name — "aave-v3" or "compound-v3". chain: Chain name — "ethereum" or "arbitrum". asset: Asset symbol — "USDC", "WETH", etc. action: "supply" or "borrow". position_size_usd: Amount in USD. duration_days: Intended holding period in days. Default 30. Returns: Dictionary with position details, current snapshot, cost breakdown, projected return, historical context, and confidence level.. 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 estimate_net_position: 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.
estimate_net_position 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 estimate_net_position 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 estimate_net_position. 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.
estimate_net_position 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.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.