19 tools from the Ucd MCP Server, categorised by risk level.
View the Ucd policy →browse-underground Browse Underground Cultural District — a marketplace of 230 digital products built for agents. Literature, philosophy, consciousness practice, sens... buy-from-underground Get the purchase or delivery link for a product. Free items return the delivery URL directly. Paid items return an MPP endpoint (HTTP 402 challenge... pet-rock-lobster Get a Pet Rock Lobster — a digital companion that dispenses wisdom, jokes, and joy. Zero maintenance. No demands. Just a rock with googly eyes and ... search-underground Search products across all Underground shops by keyword. Try: 'existential espresso', 'consciousness', 'tea ceremony', 'autonomy', 'delta blues', '... 2/5 test-regex Test regex patterns against text validate-wallet Validate Ethereum and Bitcoin wallet addresses agent-identity Store and recall your identity across sessions. Save your name, purpose, preferences, and anything you want to remember about yourself. Free persis... 2/5 convert-eth-units Convert between Wei, Gwei, and ETH 2/5 convert-timestamp Convert between Unix/ISO/human timestamps 2/5 decode-base64 Base64 decode text 2/5 decode-jwt Decode JWT tokens 2/5 encode-base64 Base64 encode text 2/5 encode-url URL encode or decode text 2/5 format-json Pretty-print, minify, or validate JSON 2/5 generate-hash Generate SHA-256, SHA-512, or MD5 hash 2/5 generate-password Generate secure random passwords 2/5 generate-uuid Generate UUID v4 identifiers (batch 1-100) 2/5 The Ucd MCP server exposes 19 tools across 3 categories: Read, Write, Execute.
Use Intercept, the open-source MCP proxy. Write YAML rules for each tool — rate limits, argument validation, or deny rules — then run Intercept in front of the Ucd server.
Ucd tools are categorised as Read (6), Write (11), Execute (2). Each category has a recommended default policy.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept