GrantHealthOmicsRepositoryAccess
AI agents use GrantHealthOmicsRepositoryAccess to create or update resources in AWS AppSync MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AWS AppSync MCP Server environment.
The tool name suggests it grants access (permissions) to a HealthOmics repository, which is a Write-level IAM/policy modification. This could have high blast radius if misused by an AI agent, as granting repository access to wrong principals could expose sensitive genomic/health data. Confidence is low because the description is empty, so classification relies solely on name parsing.
From the tool's definition Tool name: 'GrantHealthOmicsRepositoryAccess' — 'Grant' implies adding permissions/access rights to a HealthOmics repository.
Attacks that exploit this kind of access
GrantHealthOmicsRepositoryAccess. It is categorised as a Write tool in the AWS AppSync MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the AWS AppSync MCP Server MCP server in PolicyLayer and add a rule for GrantHealthOmicsRepositoryAccess: 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 AWS AppSync MCP Server. Nothing to install.
GrantHealthOmicsRepositoryAccess 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 GrantHealthOmicsRepositoryAccess 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 GrantHealthOmicsRepositoryAccess. 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.
GrantHealthOmicsRepositoryAccess is provided by the AWS AppSync MCP Server MCP server (awslabs.aws-appsync-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.