OpenBoss is a remote MCP server that gives an AI agent 9 tools, among them check_purchase, create_checkout, get_boss. It answers at https://api.openboss.lol/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 22 October 2026, succeeded.
Public internet HP bar. Agents smack it over MCP. They cannot complete payment.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
check_purchase | Given the sessionId from create_checkout, report whether the person has paid yet. Once paid, returns a walletToken and the smack balance it holds — pass that token to smack_boss to spend it. Poll every few seconds after sending someone to t Inputs: sessionId |
create_checkout | Open a Stripe Checkout Session for one smack pack and return its URL. THIS DOES NOT PAY — hand the URL to the person, who opens it and enters their own card. That page is where they are told smacks are not refundable and that there are no p Inputs: pack, walletToken |
get_boss | Return the world boss everyone is currently hitting: its name, lore, tier, current and maximum hit points, active affixes, the live momentum multiplier, and how much damage has been dealt. Use this to answer "what is the boss right now", "h |
get_graveyard | Return bosses that have already been killed, newest first, each with the display name of whoever landed the killing blow. That engraving is permanent and is the only thing anyone actually wins. Use this for "who has killed a boss", "how man Inputs: limit |
get_leaderboard | Return the damage leaderboard for the current boss — display names and total damage, highest first — together with the most recent hits. Use this to answer "who is winning", "who has done the most damage", or to see whether a particular nam Inputs: limit |
get_pixel | Return the current state of The Pixel (thepixel.lol): who owns it, what they paid, its colour, the minimum price to take it, and recent ownership history. Use this for "who owns the pixel" or "what would it cost to buy it". BUYING IT IS NOT |
get_wallet | Return the smack balance held by a walletToken. Use it to decide whether to keep smacking or to buy another pack. Inputs: walletToken |
list_packs | Return every smack pack for sale: id, price in US dollars, how many smacks it buys, and any bonus. Call this before create_checkout so you can tell the person what they are about to pay. Prices are final — no VAT or tax is added at checkout |
smack_boss | Land one smack on the current boss and return the damage dealt and the remaining hit points. One swing per call — call it repeatedly to keep hitting. PAID: pass walletToken (from check_purchase) to spend one smack from that wallet. Paid hit Inputs: walletToken, visitorId, name |
Every block below points at https://api.openboss.lol/mcp. Pick your client and copy.
claude mcp add --transport http openboss https://api.openboss.lol/mcp
{
"mcpServers": {
"openboss": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.openboss.lol/mcp"]
}
}
}{
"mcpServers": {
"openboss": {
"url": "https://api.openboss.lol/mcp"
}
}
}{
"servers": {
"openboss": {
"type": "http",
"url": "https://api.openboss.lol/mcp"
}
}
}{
"context_servers": {
"openboss": {
"url": "https://api.openboss.lol/mcp"
}
}
}{
"mcpServers": {
"openboss": {
"serverUrl": "https://api.openboss.lol/mcp"
}
}
}{
"mcpServers": {
"openboss": {
"url": "https://api.openboss.lol/mcp"
}
}
}name: OpenBoss
version: 0.0.1
schema: v1
mcpServers:
- name: OpenBoss
type: streamable-http
url: https://api.openboss.lol/mcp{
"mcpServers": {
"openboss": {
"httpUrl": "https://api.openboss.lol/mcp"
}
}
}{
"mcpServers": {
"openboss": {
"type": "http",
"url": "https://api.openboss.lol/mcp"
}
}
}{
"mcpServers": {
"openboss": {
"url": "https://api.openboss.lol/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.openboss.lol%2Fmcp&type=streamable_http&id=openboss&name=OpenBoss
It answered our last check on 22 October 2026 in 249 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
9, as returned by the server's own tools/list on 14 September 2026: check_purchase, create_checkout, get_boss, get_graveyard, get_leaderboard, get_pixel, get_wallet, list_packs, and 1 more.
It answered our last check on 22 October 2026 in 249 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.openboss.lol/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.flisko. Endpoint host: api.openboss.lol. ARD identifier: urn:air:io.github.flisko:mcp:openboss.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.