Look up Digital Token Identifier (ISO 24165/DTI) for stablecoins and crypto assets. Returns DTI code, ISIN mapping, networks, MiCA status, and how to reference in ISO 20022 messages.
Part of the Iso20022oracle server.
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AI agents call dti_lookup to retrieve information from Iso20022oracle 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 dti_lookup 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": {
"dti_lookup": {}
}
}See the full Iso20022oracle policy for all 12 tools.
These attack patterns abuse exactly the kind of access dti_lookup 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.
Look up Digital Token Identifier (ISO 24165/DTI) for stablecoins and crypto assets. Returns DTI code, ISIN mapping, networks, MiCA status, and how to reference in ISO 20022 messages.. It is categorised as a Read tool in the Iso20022oracle MCP Server, which means it retrieves data without modifying state.
Register the Iso20022oracle MCP server in PolicyLayer and add a rule for dti_lookup: 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 Iso20022oracle. Nothing to install.
dti_lookup 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 dti_lookup 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 dti_lookup. 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.
dti_lookup is provided by the Iso20022oracle MCP server (https://tooloracle.io/iso20022/mcp/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 12 Iso20022oracle tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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