AI agents call list_data_sources to retrieve information from Tecton without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about data sources without modifying, creating, or deleting any data. It is a pure read operation that retrieves configuration/metadata. The blast radius of misuse is minimal—an agent could learn about available data sources but cannot alter infrastructure or access actual data values.
From the tool's definition Tool name 'list_data_sources' and description 'List all data sources in the currently connected tecton cluster' indicate a retrieval operation with no side effects.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List all data sources in the currently connected tecton cluster. It is categorised as a Read tool in the Tecton MCP Server, which means it retrieves data without modifying state.
Register the Tecton MCP server in PolicyLayer and add a rule for list_data_sources: 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 Tecton. Nothing to install.
list_data_sources 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 list_data_sources 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 list_data_sources. 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.
list_data_sources is provided by the Tecton MCP server (slavovthinks/tecton-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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