validate_ontology_artifact

Check one supplied artifact against the three local Delx Ontology v0.3 shape constraints. No network, private state, or full RDF expansion.

SERVERDelx Mcp A2a SOURCEhttps://api.delx.ai/v1/mcp

Low RISK CLASS

Category Read

Parameters 21 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-davidmosiah-delx-mcp-a2a/validate-ontology-artifact.md

WHAT IT DOES

What validate_ontology_artifact does on Delx Mcp A2a

AI agents call validate_ontology_artifact to retrieve information from Delx Mcp A2a without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`shapes`	array	—	Optional explicit shapes; otherwise inferred from artifact markers.
`artifact`	object	Yes	Caller-supplied artifact, at most 32 KiB. Remote JSON-LD contexts are not expanded.

Parameters from the server's own tool schema.

RISK

Why validate_ontology_artifact is rated Low

Even though validate_ontology_artifact only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs validate_ontology_artifact safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Delx Mcp A2a, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For validate_ontology_artifact, this is the rule to start with:

validate_ontology_artifact Allowed

validate_ontology_artifact is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "validate_ontology_artifact": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Delx Mcp A2a, apply this rule, and every validate_ontology_artifact call is checked against it from then on.

FAQ

Questions about validate_ontology_artifact

What does the validate_ontology_artifact tool do? +

Check one supplied artifact against the three local Delx Ontology v0.3 shape constraints. No network, private state, or full RDF expansion. It is categorised as a Read tool in the Delx Mcp A2a MCP Server, which means it retrieves data without modifying state.

What parameters does validate_ontology_artifact accept? +

validate_ontology_artifact accepts 2 parameters: shapes, artifact. Required: artifact. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on validate_ontology_artifact? +

Register the Delx Mcp A2a MCP server in PolicyLayer and add a rule for validate_ontology_artifact: 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 Delx Mcp A2a. Nothing to install.

What risk level is validate_ontology_artifact? +

validate_ontology_artifact is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit validate_ontology_artifact? +

Yes. Add a rate_limit block to the validate_ontology_artifact 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.

How do I block validate_ontology_artifact completely? +

Set action: deny in the PolicyLayer policy for validate_ontology_artifact. 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.

What MCP server provides validate_ontology_artifact? +

validate_ontology_artifact is provided by the Delx Mcp A2a MCP server (https://api.delx.ai/v1/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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