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quipu_validate

Read-only

Validate RDF Turtle data against SHACL shapes without writing, catching constraint violations before data is committed to the graph.

Instructions

Validate RDF data against SHACL shapes without writing

Input Schema

NameRequiredDescriptionDefault
dataYesRDF data in Turtle format to validate
shapesYesSHACL shapes in Turtle format
as_of_txNoTransaction ceiling used to select stored validation shapes.
valid_atNoValid-time instant used to select stored validation shapes.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.17.0

TDQS

B3.4/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true. The description only reinforces non-writing; it does not add auth needs, return behavior, or validation-report details beyond annotations. With annotations covering safety, this is minimally adequate.

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

Conciseness5/5

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

One front-loaded sentence with no filler. It is appropriately terse, though its terseness contributes to completeness gaps elsewhere rather than verbosity.

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

Completeness2/5

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

No output schema exists, so the description should explain what validation returns, such as a report or conformance result, but it does not. Inputs and safety are covered by schema/annotations, leaving return-value transparency as a significant gap.

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 description coverage is 100%, with all four parameters documented in the schema. The description names none of them and adds no syntax or semantics beyond the schema, so the baseline 3 applies.

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

Purpose4/5

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

States a specific verb and resource: validate RDF data against SHACL shapes, plus a read-only constraint. It does not name or distinguish itself from sibling validation/query tools, so 4 rather than 5.

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

Usage Guidelines3/5

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

Implies use for read-only SHACL validation via 'without writing', but gives no explicit when-to-use/when-not guidance or alternatives such as quipu_policy_check or quipu_verdict_verify. Adequate implied context, not explicit routing.

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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