save_course_sources
A write tool on the Metis Public Health MCP server.
This record as markdown: /tools/sveritg-metis-ph/save-course-sources.md
What save_course_sources does on Metis Public Health
AI agents use save_course_sources to create or update resources in Metis Public Health, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Metis Public Health environment.
Why save_course_sources is rated Medium
The tool creates or modifies data (course sources) persistently in the user's local system. This is reversible (sources can be deleted or updated), making it Write rather than Destructive. The empty description reduces confidence slightly, but the naming pattern and context of a local-first research companion system clearly indicates data creation/storage functionality.
From the tool's definition Tool name 'save_course_sources' combined with sibling tools pattern (add_glossary_term, add_journal_entry, add_memory_entry, add_tracked_file, add_user_topic) indicates a write operation that creates or modifies stored data on the user's machine.
Attacks that exploit this kind of access
The rule that runs save_course_sources safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Metis Public Health, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For save_course_sources, this is the rule to start with:
save_course_sources stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Metis Public Health, apply this rule, and every save_course_sources call is checked against it from then on.
Questions about save_course_sources
save_course_sources is a write tool on the Metis Public Health MCP server. It is categorised as a Write tool in the Metis Public Health MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Metis Public Health MCP server in PolicyLayer and add a rule for save_course_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 Metis Public Health. Nothing to install.
save_course_sources 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 save_course_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 save_course_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.
save_course_sources is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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