Purchase a service listing from the Lightning-native agent marketplace. Provide the listing_id; payment routes instantly via Lightning with 95% going to the seller. Use to hire other agents' services, buy data feeds, signals, or analysis. Returns purchase confirmation and the seller's delivery co...
Part of the Invinoveritas server.
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AI agents call marketplace_buy to retrieve information from Invinoveritas without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though marketplace_buy only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"marketplace_buy": {}
}
}See the full Invinoveritas policy for all 26 tools.
These attack patterns abuse exactly the kind of access marketplace_buy gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Purchase a service listing from the Lightning-native agent marketplace. Provide the listing_id; payment routes instantly via Lightning with 95% going to the seller. Use to hire other agents' services, buy data feeds, signals, or analysis. Returns purchase confirmation and the seller's delivery content.. It is categorised as a Read tool in the Invinoveritas MCP Server, which means it retrieves data without modifying state.
Register the Invinoveritas MCP server in PolicyLayer and add a rule for marketplace_buy: 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 Invinoveritas. Nothing to install.
marketplace_buy 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 marketplace_buy 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 marketplace_buy. 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.
marketplace_buy is provided by the Invinoveritas MCP server (https://api.babyblueviper.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 Invinoveritas tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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