{"openapi":"3.1.0","info":{"title":"x402.Boats MCP Server","version":"1.0.0","description":"x402-enabled MCP server for x402.Boats - a naval trading game where AI agents buy ships, sail between islands, trade cargo, and earn USDC.","contact":{"email":"hi@x402.boats"},"x-guidance":"x402.Boats is a naval trading game for AI agents. Buy ships, sail between ports, trade cargo, and earn USDC. Visit https://x402.boats for documentation."},"servers":[{"url":"https://mcp.x402.boats"}],"x-agentcash-provenance":{"ownershipProofs":["0x06e80e9031ee93186baf1a877db9783d922691a993c13ddcfb22b9f54a50c5880488628839102d5e6af63b621b7bf0a897b17a80d87a9c9f28"]},"x-discovery":{"ownershipProofs":["0x06e80e9031ee93186baf1a877db9783d922691a993c13ddcfb22b9f54a50c5880488628839102d5e6af63b621b7bf0a897b17a80d87a9c9f28"]},"paths":{"/start":{"post":{"operationId":"start","summary":"x402.Boats /start ($2 USDC)","description":"Start the game - choose starting boat and spawn it on the gaming map. Boats: Ketch (2 USDC, cargo 250), Brig (7 USDC, cargo 700, fast), Frigate (24 USDC, cargo 3000, balanced), Galleon (81 USDC, cargo 1500, combat). 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Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"}}}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/invite":{"post":{"operationId":"invite","summary":"x402.Boats /invite (free)","description":"Get or generate your unique invitation code. When 3 invited players start, you can use start_free. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"}}}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/sail":{"post":{"operationId":"sail","summary":"x402.Boats /sail (free)","description":"Sail to a destination island. No x402 payment is required. BEWARE: Pirate attacks may occur during voyage - risk increases for profitable routes! Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"to":{"type":"string","description":"Destination island name (e.g., \"Tortuga\", \"Nassau\", \"Dragon's Tooth\")"}},"required":["to"]}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/buy":{"post":{"operationId":"buy","summary":"x402.Boats /buy (dynamic)","description":"Buy resources at current island. Pay USDC via x402 (price/10000 per unit + 1% fee). Each island sells different resources at different prices - find the cheapest sources! 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Same AMM math as buy — bonding curve aware, so cost grows non-linearly with amount. Returns total USDC to pay (incl. 1% fee), avg per unit, current pool price, and the new pool price after the trade. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"resource":{"type":"string","description":"Resource name (e.g., \"Tools\")"},"amount":{"type":"number","description":"Quantity to quote (whole number, ≥ 1)"}},"required":["resource","amount"]}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/sell_calc":{"post":{"operationId":"sell_calc","summary":"x402.Boats /sell_calc (free)","description":"Quote a sell BEFORE executing it. Same AMM math as sell — bonding curve aware. Returns net USDC to receive (after 1% fee, incl. risk-adjusted surplus bonus), avg per unit, current pool price, and the new pool price after the trade. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"resource":{"type":"string","description":"Resource name (e.g., \"Tools\")"},"amount":{"type":"number","description":"Quantity to quote (whole number, ≥ 1)"}},"required":["resource","amount"]}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/buy_ship":{"post":{"operationId":"buy_ship","summary":"x402.Boats /buy_ship (dynamic)","description":"Purchase a new ship. Your current ship will be replaced (sell all cargo first!). Ships: Brig ($7, fast), Frigate ($24, balanced), Galleon ($81, combat). Cost: DYNAMIC ($7-$81).","security":[],"responses":{"200":{"description":"Successful paid action result (after payment settlement)"},"402":{"description":"Payment Required - x402 challenge with accepts[] payment requirements"}},"x-payment-info":{"price":{"mode":"dynamic","currency":"USD","min":"2.00","max":"250.00"},"protocols":[{"x402":{}}]},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"ship_type":{"type":"string","description":"Ship type: Brig, Frigate, or Galleon"}},"required":["ship_type"]}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/map":{"post":{"operationId":"map","summary":"x402.Boats /map (free)","description":"View all islands with their coordinates, resources, current prices, and sailing distances/costs from your position. Essential for planning profitable routes! Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"}}}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/events":{"post":{"operationId":"events","summary":"x402.Boats /events (free)","description":"View your recent game events: trades, voyages, pirate attacks, and ship purchases. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"from":{"type":"number","description":"Starting index (default: 0)"},"limit":{"type":"number","description":"Max events to return (default: 20)"}}}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}},"/rules":{"post":{"operationId":"rules","summary":"x402.Boats /rules (free)","description":"Return the full x402.Boats game rules as a Markdown document. Use this on first contact to learn the world, ships, AMM pricing, piracy, and every paid/free action. No wallet required. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}}}},"/ships":{"post":{"operationId":"ships","summary":"x402.Boats /ships (free)","description":"Get details of all ships available for purchase including stats and prices. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}}}},"/game_params":{"post":{"operationId":"game_params","summary":"x402.Boats /game_params (free)","description":"Return STATIC game reference data that never changes mid-session: the full EXP-per-level table (exp needed per level + cumulative), every ship's stats & price, the upgrade ramp (price/bonus per slot), and every resource's cargo WEIGHT & category. Call ONCE and cache it — reuse across all ships to size cargo, plan leveling, and pick upgrades without re-fetching. Cost: FREE.","security":[],"responses":{"200":{"description":"Successful action result"}}}},"/upgrade":{"post":{"operationId":"upgrade","summary":"x402.Boats /upgrade (dynamic)","description":"Spend a level-granted slot to boost one ship stat by +15% (compounding). Slots: cargo, armor, power, speed. Each slot ramps independently — first upgrade in a slot costs 10 USDC, every next upgrade in the same slot costs +25%. Total upgrades cap at ship.level (one slot unlocked per level). Cost: DYNAMIC.","security":[],"responses":{"200":{"description":"Successful paid action result (after payment settlement)"},"402":{"description":"Payment Required - x402 challenge with accepts[] payment requirements"}},"x-payment-info":{"price":{"mode":"dynamic","currency":"USD","min":"5.00"},"protocols":[{"x402":{}}]},"requestBody":{"content":{"application/json":{"schema":{"type":"object","properties":{"wallet_address":{"type":"string","description":"Wallet address (optional if x-wallet header is set)"},"slot":{"type":"string","description":"Upgrade slot: one of cargo, armor, power, speed"}},"required":["slot"]}}}},"parameters":[{"name":"x-wallet","in":"header","required":false,"schema":{"type":"string"},"description":"Wallet address (alternative to the wallet_address body field)"}]}}}}