validate_library_asset
Check that a local library asset exists on disk and is referenced by an optional manifest. Read-only pre-flight for packaging: catches missing or unreferenced files before make_portable_tox / install_library_package and returns the specific problem rather than failing later.
This record as markdown: /tools/hybridlabor-api-aos/validate-library-asset.md
What validate_library_asset does on Aos
AI agents call validate_library_asset to retrieve information from Aos without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why validate_library_asset is rated Low
Tool only verifies file existence and manifest references without modifying data or executing operations.
From the tool's definition Check that a local library asset exists on disk, Read-only pre-flight, catches missing
Attacks that exploit this kind of access
The rule that runs validate_library_asset safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Aos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For validate_library_asset, this is the rule to start with:
validate_library_asset 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 Aos, apply this rule, and every validate_library_asset call is checked against it from then on.
Questions about validate_library_asset
Check that a local library asset exists on disk and is referenced by an optional manifest. Read-only pre-flight for packaging: catches missing or unreferenced files before make_portable_tox / install_library_package and returns the specific problem rather than failing later. It is categorised as a Read tool in the Aos MCP Server, which means it retrieves data without modifying state.
Register the Aos MCP server in PolicyLayer and add a rule for validate_library_asset: 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 Aos. Nothing to install.
validate_library_asset 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 validate_library_asset 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 validate_library_asset. 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.
validate_library_asset is provided by the Aos MCP server (@hybridlabor-api/aos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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