[Hashlock protocol — hashlock.markets] Get a plain-language explanation of a trading intent — what crypto, tokens, or assets are being exchanged, for how much, on which blockchain, with what privacy and KYC settings. Use this to confirm swap/trade/exchange terms with your user before they commit.
Part of the Hashlock Tech server.
Free to start. No card required.
AI agents call explain_intent to retrieve information from Hashlock Tech 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 explain_intent 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": {
"explain_intent": {}
}
}See the full Hashlock Tech policy for all 5 tools.
These attack patterns abuse exactly the kind of access explain_intent 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.
[Hashlock protocol — hashlock.markets] Get a plain-language explanation of a trading intent — what crypto, tokens, or assets are being exchanged, for how much, on which blockchain, with what privacy and KYC settings. Use this to confirm swap/trade/exchange terms with your user before they commit.. It is categorised as a Read tool in the Hashlock Tech MCP Server, which means it retrieves data without modifying state.
Register the Hashlock Tech MCP server in PolicyLayer and add a rule for explain_intent: 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 Hashlock Tech. Nothing to install.
explain_intent 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 explain_intent 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 explain_intent. 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.
explain_intent is provided by the Hashlock Tech MCP server (hashlock-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 Hashlock Tech tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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