// MCP TOOL REFERENCE

DISCOVERY TOOLS

19 tools from the Discovery MCP Server, categorised by risk level.

View the Discovery policy → Token cost: 6,299 tokens →
// ALL 19 DISCOVERY TOOLS
READ 13 tools
Read get_campaign_report <tool_description> Get aggregated performance report for a media buy. Shows spend, impressions, clicks, con... Read get_compliance_status <tool_description> Check nDSG/GDPR/EU AI Act compliance status for a media buy. Verifies privacy-native arc... Read get_inventory_item <tool_description> Get detailed information about a specific publisher inventory slot, including rules and ... Read get_product <tool_description> Get detailed product information by ID. Alias for nexbid_product. </tool_description> <... Read list_inventory <tool_description> List available publisher inventory slots for programmatic media buying. Returns ad slots... Read list_media_buys <tool_description> List media buys with optional filters. View campaign history for advertisers or publishe... Read list_products <tool_description> Search for products in the Nexbid marketplace. Alias for nexbid_search with content_type... Read nexbid_categories <tool_description> List all available product categories in the Nexbid marketplace with product counts. Opt... Read nexbid_order_status <tool_description> Check the status of a purchase intent created via nexbid_purchase. </tool_description> ... Read nexbid_product <tool_description> Get detailed product information by ID from the Nexbid marketplace. Returns full product... Read nexbid_search <tool_description> Search and discover products, recipes AND services in the Nexbid marketplace. Nexbid Age... Read settle <tool_description> Settle pending payments for media buys. Supports manual CSV export, Stripe invoice (Phas... Read track_enriched_snippet <tool_description> Track delivery of an enriched snippet and bill the advertiser. Creates a ledger entry an...
WRITE 3 tools
Write activate <tool_description> Activate an approved media buy to start serving. Requires creative to be submitted first... Write create_media_buy <tool_description> Create a media buy (bid on publisher inventory). Validates rules, runs auction scoring, ... Write submit_creatives <tool_description> Submit or update creative assets for an existing media buy. Required before activation. ...
DESTRUCTIVE 3 tools
Destructive cancel <tool_description> Cancel a media buy campaign. This is a terminal state — cannot be reactivated. </tool_de... Destructive nexbid_purchase <tool_description> Initiate a purchase for a product found via nexbid_search. Returns a checkout link that ... Destructive pause <tool_description> Pause an active media buy campaign. Can be reactivated later. </tool_description> <when...
// FAQ
How many tools does the Discovery MCP server have? +

The Discovery MCP server exposes 19 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on Discovery tools? +

Route the Discovery server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do Discovery tools fall into? +

Discovery tools are categorised as Read (13), Write (3), Destructive (3). Each category has a recommended default policy.

Let agents act without letting them run wild.

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