Rank ASN.1 definition candidates for ASN.1 data using custom ASN.1 definitions or the built-in PKI component corpus.
AI agents call sift_asn1_definition_candidates to retrieve information from PKI Studio MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and analyzes ASN.1 definitions to rank candidates for matching against provided data. This is a read-only operation that returns ranking results without side effects, data modification, code execution, or irreversible changes. The low severity reflects that misuse would only affect information retrieval outcomes, not system state or external resources.
From the tool's definition Tool name contains 'sift' and description states 'Rank ASN.1 definition candidates' — this performs analysis and ranking of data against definitions without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
Rank ASN.1 definition candidates for ASN.1 data using custom ASN.1 definitions or the built-in PKI component corpus. It is categorised as a Read tool in the PKI Studio MCP MCP Server, which means it retrieves data without modifying state.
Register the PKI Studio MCP server in PolicyLayer and add a rule for sift_asn1_definition_candidates: 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 PKI Studio MCP. Nothing to install.
sift_asn1_definition_candidates 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 sift_asn1_definition_candidates 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 sift_asn1_definition_candidates. 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.
sift_asn1_definition_candidates is provided by the PKI Studio MCP server (pkistudio/pkistudiomcp). 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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