Marketplace MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 62 installs a week from npm. Last commit 1 Aug 2026.
Publish Nostr marketplace listings (NIP-15 + Shopstr kinds 30019/30402) so agents can run a store.
Nothing serious here today
Today is the operative word: we check Marketplace MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add marketplace-mcp -e 'NOSTR_RELAYS=<NOSTR_RELAYS>' -- npx -y marketplace-mcp{
"mcpServers": {
"marketplace-mcp": {
"command": "npx",
"args": [
"-y",
"marketplace-mcp"
],
"env": {
"NOSTR_RELAYS": "<NOSTR_RELAYS>"
}
}
}
}[mcp_servers.marketplace-mcp]
command = "npx"
args = ["-y", "marketplace-mcp"]
env = { NOSTR_RELAYS = "<NOSTR_RELAYS>" }{
"mcpServers": {
"marketplace-mcp": {
"command": "npx",
"args": [
"-y",
"marketplace-mcp"
],
"env": {
"NOSTR_RELAYS": "<NOSTR_RELAYS>"
}
}
}
}{
"servers": {
"marketplace-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"marketplace-mcp"
],
"env": {
"NOSTR_RELAYS": "<NOSTR_RELAYS>"
}
}
}
}Put your own value in place of
<NOSTR_RELAYS> (Comma-separated wss:// relay URLs).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
NOSTR_NIP46_URI (NIP-46 bunker URI (preferred signer)), NOSTR_PRIVATE_KEY (nsec private key (alternative to NOSTR_NIP46_URI)), SHOPSTR_CACHE_ENABLED (Set true to POST Shopstr-dialect events to the Shopstr cache after relay publish).
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Marketplace MCP — questions
Answers built from our own checks of this server.