Approval Security Scan: Find risky token approvals for a wallet — ERC-20 allowances, Permit2 granular allowances (held inside Uniswap Permit2), and ERC-721/1155 setApprovalForAll operator grants — with risk grading and USD value-at-risk, across 9 EVM chains. Body: { params: { address, chain? } }.
Part of the Agent Einstein — Autonomous Crypto Intelligence server.
Free to start. No card required.
AI agents call approval_security_scan 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 approval_security_scan 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": {
"approval_security_scan": {}
}
}See the full Agent Einstein — Autonomous Crypto Intelligence policy for all 72 tools.
These attack patterns abuse exactly the kind of access approval_security_scan 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.
Approval Security Scan: Find risky token approvals for a wallet — ERC-20 allowances, Permit2 granular allowances (held inside Uniswap Permit2), and ERC-721/1155 setApprovalForAll operator grants — with risk grading and USD value-at-risk, across 9 EVM chains. Body: { params: { address, chain? } }.. 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 approval_security_scan: 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.
approval_security_scan 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 approval_security_scan 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 approval_security_scan. 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.
approval_security_scan 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.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.