rss_source_save_many
AI agents use rss_source_save_many to create or update resources in Legado — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Legado environment.
This tool creates or modifies multiple RSS source configurations in Legado. While reversible (sources can be edited or deleted later), the bulk nature and lack of explicit description create moderate risk of unintended data creation or misconfiguration. Categorized as Write rather than Destructive since the operation is reversible and doesn't permanently delete data.
From the tool's definition Tool name 'rss_source_save_many' indicates bulk creation or modification of RSS sources. Sibling tools like 'book_save' and 'book_add_local' are clearly write operations, establishing the pattern. The 'save_many' suffix suggests batch writing of data.
Documented attack patterns abuse exactly the kind of access rss_source_save_many gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Legado, and nothing reaches the server without passing your rules. This is the rule we recommend for rss_source_save_many:
{
"version": "1",
"default": "deny",
"tools": {
"rss_source_save_many": {
"limits": [
{
"counter": "rss_source_save_many_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}rss_source_save_many 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.
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rss_source_save_many. It is categorised as a Write tool in the Legado MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Legado MCP server in PolicyLayer and add a rule for rss_source_save_many: 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 Legado. Nothing to install.
rss_source_save_many 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 rss_source_save_many 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 rss_source_save_many. 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.
rss_source_save_many is provided by the Legado MCP server (joestar817/legado-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Legado, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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31 Legado tools catalogued and risk-classified — across an index of 43,000+ MCP servers.