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pkistudio

PKI Studio MCP

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by pkistudio

Parse Certificate

parse_certificate

Parse X.509 certificates to extract their structure, details, and CDP, AIA, OCSP resource plans without network access.

Instructions

Parse an X.509 certificate with CertGadgets and return its structure, details, and CDP/AIA/OCSP resource plans without network access.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataYesX.509 certificate as DER, PEM, HEX, or base64 text.
formatNoInput format. Use auto to detect PEM, HEX, base64, DER, or BER.auto
sourceNameNoOptional source filename or label.
maxDepthNoMaximum certificate tree depth to include.
includeDerNoInclude full DER bytes for certificate tree nodes.
derEncodingNoOutput encoding for returned bytes.
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the burden. It discloses that no network access is performed, but lacks details on side effects, output format, or limitations. Some transparency but not comprehensive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single sentence conveys the essential action and key behavioral note. It is concise and front-loaded, though could be more structured with additional details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema, the description provides useful context about outputs (structure, details, resource plans). It is fairly complete for a parsing tool, but could better explain the meaning of 'resource plans' and output structure.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds no extra meaning beyond the schema; it does not elaborate on parameters like maxDepth or includeDer.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Parse an X.509 certificate' with specific outputs: structure, details, and CDP/AIA/OCSP resource plans. It distinguishes from sibling tools by focusing on a specific certificate type and parsing action.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool over alternatives (e.g., fetch_certificate_network_resources). The description only mentions 'without network access' as a behavior, not a usage context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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