List every news source the Spaceflight News API aggregates, plus the API version. Use the names to filter search_articles by news_site. Keyless.
AI agents call list_sources to retrieve information from Spaceflight News MCP 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 a static list of news sources and API version information. It has no capability to modify, delete, or execute operations—it purely retrieves reference data. The low severity reflects minimal blast radius if misused; an agent listing sources cannot cause harm. Keyless access confirms no authentication bypass risks.
From the tool's definition Tool description states 'List every news source' and 'Keyless', indicating it retrieves metadata without side effects. The verb 'list' and purpose of providing reference data for filtering confirm read-only behavior.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List every news source the Spaceflight News API aggregates, plus the API version. Use the names to filter search_articles by news_site. Keyless. It is categorised as a Read tool in the Spaceflight News MCP MCP Server, which means it retrieves data without modifying state.
Register the Spaceflight News MCP server in PolicyLayer and add a rule for list_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 Spaceflight News MCP. Nothing to install.
list_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_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_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_sources is provided by the Spaceflight News MCP server (pipeworx-io/mcp-spaceflight-news). 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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