Sets which existing Subject on a wiki page is its Main Subject, or clears it. Enabled only when the wiki has NeoWiki installed. Pass subjectId to promote a Subject that already exists on the page, or null to clear the Main Subject. This differs from neowiki-create-subject with isMain, which creat...
AI agents use neowiki-set-main-subject to create or update resources in Mediawiki Mcp Server Olioex — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mediawiki Mcp Server Olioex environment.
This tool modifies wiki page metadata (the designation of Main Subject status) in a reversible manner. It does not delete data (Destructive), execute arbitrary code (Execute), transfer funds (Financial), or create new subjects (that would be neowiki-create-subject). The 'edit right' requirement and ability to set or clear a designation confirms it's a Write operation.
From the tool's definition The tool 'Sets which existing Subject on a wiki page is its Main Subject, or clears it' and 'Requires the edit right' indicates it modifies page metadata by changing designations of existing subjects.
Documented attack patterns abuse exactly the kind of access neowiki-set-main-subject gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mediawiki Mcp Server Olioex, and nothing reaches the server without passing your rules. This is the rule we recommend for neowiki-set-main-subject:
{
"version": "1",
"default": "deny",
"tools": {
"neowiki-set-main-subject": {
"limits": [
{
"counter": "neowiki-set-main-subject_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}neowiki-set-main-subject 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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Sets which existing Subject on a wiki page is its Main Subject, or clears it. Enabled only when the wiki has NeoWiki installed. Pass subjectId to promote a Subject that already exists on the page, or null to clear the Main Subject. This differs from neowiki-create-subject with isMain, which creates a NEW main Subject. Requires the edit right. Pre-1.0: the NeoWiki API may change without notice. It is categorised as a Write tool in the Mediawiki Mcp Server Olioex MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mediawiki Mcp Server Olioex MCP server in PolicyLayer and add a rule for neowiki-set-main-subject: 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 Mediawiki Mcp Server Olioex. Nothing to install.
neowiki-set-main-subject 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 neowiki-set-main-subject 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 neowiki-set-main-subject. 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.
neowiki-set-main-subject is provided by the Mediawiki Mcp Server Olioex MCP server (mediawiki-mcp-server-olioex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mediawiki Mcp Server Olioex, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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38 Mediawiki Mcp Server Olioex tools catalogued and risk-classified — across an index of 43,000+ MCP servers.