refresh_hdf5_resources
Re-scan client roots and update available HDF5 resources.
This record as markdown: /tools/io-github-iowarp-adios-mcp/refresh-hdf5-resources.md
What refresh_hdf5_resources does on CLIO Adios
AI agents use refresh_hdf5_resources to create or update resources in CLIO Adios, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CLIO Adios environment.
Why refresh_hdf5_resources is rated Medium
This tool modifies the state of HDF5 resource metadata by rescanning and updating available resources. While it does not delete data (Destructive) or execute arbitrary code (Execute), it does perform a state-changing operation that alters what resources are available or visible in the system. The scope is limited to metadata/resource registration rather than data content, making it Write rather than more severe.
From the tool's definition Tool description states it will 'Re-scan client roots and update available HDF5 resources.' The verb 'update' indicates modification of state, and 'refresh' implies synchronization that changes metadata or resource registrations.
Attacks that exploit this kind of access
The rule that runs refresh_hdf5_resources safely
PolicyLayer is an MCP gateway: it sits between your AI agents and CLIO Adios, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For refresh_hdf5_resources, this is the rule to start with:
refresh_hdf5_resources stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect CLIO Adios, apply this rule, and every refresh_hdf5_resources call is checked against it from then on.
Questions about refresh_hdf5_resources
Re-scan client roots and update available HDF5 resources. It is categorised as a Write tool in the CLIO Adios MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the CLIO Adios MCP server in PolicyLayer and add a rule for refresh_hdf5_resources: 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 CLIO Adios. Nothing to install.
refresh_hdf5_resources 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 refresh_hdf5_resources 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 refresh_hdf5_resources. 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.
refresh_hdf5_resources is provided by the CLIO Adios MCP server (pypi:clio-kit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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