get_ontology_metadata
Return the Delx Ontology framework, layers, canonical IRIs, and discovery URLs.
This record as markdown: /tools/io-github-davidmosiah-delx-mcp-a2a/get-ontology-metadata.md
What get_ontology_metadata does on Delx Mcp A2a
AI agents call get_ontology_metadata 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 |
|---|---|---|---|
base_url | string | — | Optional API base URL used to render well-known links. |
Parameters from the server's own tool schema.
Why get_ontology_metadata is rated Low
This tool retrieves and returns structured metadata about an ontology framework — it is a read-only query operation that provides information for discovery and understanding. There are no indications of data modification, deletion, execution of arbitrary operations, or financial transactions. The low severity reflects that ontology metadata is typically non-sensitive system information.
From the tool's definition Tool name 'get_ontology_metadata' and description 'Return the Delx Ontology framework, layers, canonical IRIs, and discovery URLs' indicate retrieval of metadata and framework information with no side effects.
Risk signalsAccepts URL/endpoint input (base_url)
Attacks that exploit this kind of access
The rule that runs get_ontology_metadata 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 get_ontology_metadata, this is the rule to start with:
get_ontology_metadata is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Delx Mcp A2a, apply this rule, and every get_ontology_metadata call is checked against it from then on.
Questions about get_ontology_metadata
Return the Delx Ontology framework, layers, canonical IRIs, and discovery URLs. It is categorised as a Read tool in the Delx Mcp A2a MCP Server, which means it retrieves data without modifying state.
get_ontology_metadata accepts 1 parameter: base_url. The full parameter table on this page comes from the server's own tool schema.
Register the Delx Mcp A2a MCP server in PolicyLayer and add a rule for get_ontology_metadata: 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.
get_ontology_metadata 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 get_ontology_metadata 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 get_ontology_metadata. 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.
get_ontology_metadata 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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