search_fhir_resources

ServerAwslabs Amazon Sns Sqs
CategoryRead

WHAT IT DOES

What search_fhir_resources does on Awslabs Amazon Sns Sqs

AI agents call search_fhir_resources to retrieve information from Awslabs Amazon Sns Sqs without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why search_fhir_resources needs a policy

This tool performs read-only operations against a HealthLake datastore. It retrieves FHIR resources without creating, modifying, deleting, executing code, or committing financial transactions. The pagination mechanism (next_token, has_next) is a standard read pattern for large result sets.

From the tool's definition Tool description states 'Search for FHIR resources' and 'Returns up to 100 results per call' with pagination support. The verb 'search' and 'returns results' indicate query/retrieval operations with no modification or deletion of data.

Documented attack patterns abuse exactly the kind of access search_fhir_resources gives an agent:

POLICY

How to control search_fhir_resources

PolicyLayer is an MCP gateway — it sits between your AI agents and Awslabs Amazon Sns Sqs, and nothing reaches the server without passing your rules. This is the rule we recommend for search_fhir_resources:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_fhir_resources": {}
  }
}

search_fhir_resources is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Awslabs Amazon Sns Sqs — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

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All 805 Awslabs Amazon Sns Sqs tools →

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about search_fhir_resources

What does the search_fhir_resources tool do? +

Search for FHIR resources in HealthLake datastore with advanced search capabilities. Returns up to 100 results per call. If pagination.has_next is true, call this tool again with the next_token to get more results. It is categorised as a Read tool in the Awslabs Amazon Sns Sqs MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_fhir_resources? +

Register the Awslabs Amazon Sns Sqs MCP server in PolicyLayer and add a rule for search_fhir_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 Awslabs Amazon Sns Sqs. Nothing to install.

What risk level is search_fhir_resources? +

search_fhir_resources is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit search_fhir_resources? +

Yes. Add a rate_limit block to the search_fhir_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.

How do I block search_fhir_resources completely? +

Set action: deny in the PolicyLayer policy for search_fhir_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.

What MCP server provides search_fhir_resources? +

search_fhir_resources is provided by the Awslabs Amazon Sns Sqs MCP server (awslabs.amazon-sns-sqs-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Awslabs Amazon Sns Sqs tool call.

Start from Awslabs Amazon Sns Sqs, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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