Fetch a Uniswap v3 time-weighted average price (TWAP) read
AI agents call get_twap_onchain to retrieve information from OracleForge MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves cryptocurrency pricing data from Uniswap v3 without creating, modifying, deleting, or executing any state-changing operations. It is a pure query operation with no side effects, making it a Read category tool with low severity risk.
From the tool's definition Tool name 'get_twap_onchain' and description 'Fetch a Uniswap v3 time-weighted average price (TWAP) read' use the verb 'Fetch' and explicitly state 'read', indicating data retrieval with no modifications.
Attacks that exploit this kind of access
Fetch a Uniswap v3 time-weighted average price (TWAP) read. It is categorised as a Read tool in the OracleForge MCP MCP Server, which means it retrieves data without modifying state.
Register the OracleForge MCP server in PolicyLayer and add a rule for get_twap_onchain: 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 OracleForge MCP. Nothing to install.
get_twap_onchain 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_twap_onchain 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_twap_onchain. 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_twap_onchain is provided by the OracleForge MCP server (maxiaworld/oracleforge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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