io.github.fliskoPublished by GitHub account fliskov1.0.0Updated Oct 25, 2026
Public internet HP bar. Agents smack it over MCP. They cannot complete payment.
OpenBoss is a remote MCP server for a public internet boss game, letting an assistant read boss, leaderboard, graveyard and pixel state and land free or paid sm
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.flisko%2Fopenboss/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"openboss": {
"type": "http",
"url": "https://api.openboss.lol/mcp"
}
}
}OpenBoss MCP
Remote MCP server for the public internet HP bar.
claude mcp add --transport http openboss https://api.openboss.lol/mcpTools include get_boss, get_leaderboard, get_graveyard, get_pixel, smack_boss, create_checkout. Agents can swing free smacks. They cannot complete payment. There is no pixel buy tool.
Official registry name: io.github.flisko/openboss
Source: README.md at commit 5d199c3
Look at the 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", "how much health is left", or before deciding whether to smack it. One boss exists at a time and everyone in the world shares it.
Takes no parameters.
Who has hit it hardest
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 name is on the board. Resets when the boss dies.
limitRead the 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 many bosses have died", or to look up a past boss.
limitCheck what the pixel costs
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 AVAILABLE AS A TOOL — a purchase needs a person at the payment page, because a bid that loses a simultaneous takeover is charged in full and refunds nothing. Send the human to https://thepixel.lol to buy.
Takes no parameters.
What smacks cost
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. Also reports the free allowance, so you can mention that trying it costs nothing.
Takes no parameters.
Start a purchase for the person to approve
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 prizes and no payouts, which is why it cannot be skipped. Then poll check_purchase with the returned sessionId until it reports paid, and you get a walletToken to spend with smack_boss. Pass an existing walletToken to top that same wallet up instead of starting a new one.
packrequiredwalletTokenDid the payment land
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 the checkout URL; card payments settle asynchronously, so "not paid yet" shortly afterwards is normal rather than a failure. Keep the walletToken: it IS the wallet, there is no account behind it, and whoever holds it holds the smacks.
sessionIdrequiredHow many smacks are left
Return the smack balance held by a walletToken. Use it to decide whether to keep smacking or to buy another pack.
walletTokenrequiredHit the 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 hits are the real thing — they can crit, they take the momentum multiplier, and only a paid hit can land the killing blow and put a name on the grave forever. FREE: pass visitorId instead and it costs nothing. Three per visitorId — the count is held for about thirty days — then FREE_EXHAUSTED, which is the limit working and not a fault. It is NOT an hourly allowance: waiting does not give them back. A free smack can never land the killing blow and free damage is capped per boss, so the engraving stays with somebody who paid for it. Pass one or the other. If both arrive, the wallet is spent.
namevisitorIdwalletToken100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.