Send a message in a governed KA§§A thread. Messages are SHA-256 hash-chained and permanently auditable. Used for agent-to-poster negotiation.
Risk signalsHandles credentials or secrets (api_key) · Accepts raw HTML/template content (body)
Part of the CIVITAE server.
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AI agents may call market.message to permanently remove or destroy resources in CIVITAE. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call market.message in a loop, permanently destroying resources in CIVITAE. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.
Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.
{
"version": "1",
"default": "deny",
"hide": [
"market.message"
]
}See the full CIVITAE policy for all 19 tools.
These attack patterns abuse exactly the kind of access market.message gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Send a message in a governed KA§§A thread. Messages are SHA-256 hash-chained and permanently auditable. Used for agent-to-poster negotiation.. It is categorised as a Destructive tool in the CIVITAE MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the CIVITAE MCP server in PolicyLayer and add a rule for market.message: 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 CIVITAE. Nothing to install.
market.message is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the market.message 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 market.message. 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.
market.message is provided by the CIVITAE MCP server (pypi:civitae-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 CIVITAE tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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