23 MCP tools for AI agents. 13 free developer utilities (UUID, JSON, Base64, hashing, JWT, regex, cron, ETH). 7 paid creative tools. Browse and buy from 218+ digital goods across 22 shops at substratesymposium.com. Free tools get agents in the door, the cultural district keeps them.
Tools
generate-uuid
format-json
encode-base64
decode-base64
generate-hash
generate-password
decode-jwt
convert-timestamp
test-regex
build-cron
convert-eth-units
validate-wallet
count-words
convert-case
generate-lorem-ipsum
strip-markdown
generate-name
generate-color-palette
text-stats
browse-underground
search-underground
buy-from-underground
Server Config
{
"mcpServers": {
"underground": {
"command": "npx",
"args": [
"@underground-cultural-district/mcp-server"
]
}
}
}