Replace an ontology relationship (PUT).
AI agents use blawx_ontology_relationship_update to create or update resources in Blawx MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Blawx MCP Server environment.
This tool modifies ontology relationship data in a reversible manner. While 'replace' could suggest overwriting, PUT operations in REST APIs typically allow reversal (the previous state can be restored or the change undone). This is a Write operation rather than Destructive because the change is not inherently irreversible.
From the tool's definition Tool name includes 'update' and description states 'Replace an ontology relationship (PUT)', indicating modification of existing data via HTTP PUT method.
Attacks that exploit this kind of access
Replace an ontology relationship (PUT). It is categorised as a Write tool in the Blawx MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Blawx MCP Server MCP server in PolicyLayer and add a rule for blawx_ontology_relationship_update: 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 Blawx MCP Server. Nothing to install.
blawx_ontology_relationship_update is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the blawx_ontology_relationship_update 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 blawx_ontology_relationship_update. 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.
blawx_ontology_relationship_update is provided by the Blawx MCP Server MCP server (lexpedite/blawx_mcp). 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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