Read an H5AD (AnnData) file and return metadata: number of observations, variables, column names. Use this as the first step to understand a single-cell or omics dataset.
AI agents call read_h5ad to retrieve information from MedSci Agent without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a pure read operation on a data file, returning schema information (observation count, variable count, column names) without any side effects. It is a non-destructive query operation typical of exploratory data analysis. The low severity reflects minimal blast radius—an AI agent misusing this tool would only retrieve information about a dataset, not modify, execute code, or delete data.
From the tool's definition Tool name 'read_h5ad' and description explicitly state it 'read[s]' a file and 'return[s] metadata' with no modification or deletion capability. The stated purpose is 'to understand' the dataset structure.
Documented attack patterns abuse exactly the kind of access read_h5ad gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MedSci Agent, and nothing reaches the server without passing your rules. This is the rule we recommend for read_h5ad:
{
"version": "1",
"default": "deny",
"tools": {
"read_h5ad": {}
}
}read_h5ad is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Read an H5AD (AnnData) file and return metadata: number of observations, variables, column names. Use this as the first step to understand a single-cell or omics dataset. It is categorised as a Read tool in the MedSci Agent MCP Server, which means it retrieves data without modifying state.
Register the MedSci Agent MCP server in PolicyLayer and add a rule for read_h5ad: 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 MedSci Agent. Nothing to install.
read_h5ad 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 read_h5ad 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 read_h5ad. 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.
read_h5ad is provided by the MedSci Agent MCP server (omar-a-hassan/medsci-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MedSci Agent, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
28 MedSci Agent tools catalogued and risk-classified — across an index of 43,000+ MCP servers.