Parse gaps.md and return all gap entries (id, query,
AI agents call list_gaps to retrieve information from Ebony Enriching without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves gap entries from a markdown file without creating, modifying, or deleting data. It is a simple read operation consistent with the Read category. The append-only semantics of the server and the presence of separate tools (add_gap, remove_gap) for modifications confirm that list_gaps is read-only.
From the tool's definition Tool name 'list_gaps' and action 'Parse `gaps.md` and return all gap entries' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Parse gaps.md and return all gap entries (id, query,. It is categorised as a Read tool in the Ebony Enriching MCP Server, which means it retrieves data without modifying state.
Register the Ebony Enriching MCP server in PolicyLayer and add a rule for list_gaps: 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 Ebony Enriching. Nothing to install.
list_gaps 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 list_gaps 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 list_gaps. 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.
list_gaps is provided by the Ebony Enriching MCP server (parkviewlab/ebony-enriching). 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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