AI agents use swap_tokens to commit financial operations through EDUCHAIN Agent Kit — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Token swaps on a decentralized exchange involve transferring cryptocurrency assets from one form to another, committing on-chain financial transactions that are irreversible once submitted. Misuse could result in loss of funds, unfavorable trades, or exploitation via sandwich attacks. This falls squarely in the Financial category, which takes precedence over all others.
From the tool's definition "Swap tokens on SailFish DEX (token to token)" — performing a token swap on a DEX constitutes a financial transaction that moves assets
Documented attack patterns abuse exactly the kind of access swap_tokens gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and EDUCHAIN Agent Kit, and nothing reaches the server without passing your rules. This is the rule we recommend for swap_tokens:
{
"version": "1",
"default": "deny",
"tools": {
"swap_tokens": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
}Any call to swap_tokens is blocked until a human approves it. The rest of the server keeps working.
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Swap tokens on SailFish DEX (token to token). It is categorised as a Financial tool in the EDUCHAIN Agent Kit MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the EDUCHAIN Agent Kit MCP server in PolicyLayer and add a rule for swap_tokens: 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 EDUCHAIN Agent Kit. Nothing to install.
swap_tokens is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the swap_tokens 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 swap_tokens. 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.
swap_tokens is provided by the EDUCHAIN Agent Kit MCP server (sailfish-finance/educhain-ai-agent-kit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from EDUCHAIN Agent Kit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
29 EDUCHAIN Agent Kit tools catalogued and risk-classified — across an index of 43,000+ MCP servers.