{"openapi":"3.1.0","info":{"title":"Charter vs Own API","version":"1.0.0","summary":"A private jet charter cost estimator covering the hourly rate plus the fees that are not in it, and where ownership overtakes chartering.","description":"Charter vs Own (https://chartervsown.com/): the site's own MCP server, served from its domain. A private jet charter cost estimator covering the hourly rate plus the fees that are not in it, and where ownership overtakes chartering.\n\n[calculator] Charter cost and the ownership crossover: an agent-callable calculator for private jet charter cost estimator — Hours actually billed, Hourly charges, Estimated total for this trip, computed from your inputs with sources.. This server runs the Charter cost and the ownership crossover calculator published at https://chartervsown.com/. Call `calculate` with the inputs to get the worked figures; every result cites https://chartervsown.com/. Licence: https://chartervsown.com/terms.\n\n[enquiry] ENQUIRY SERVER for Charter vs Own (https://chartervsown.com/). What it does: starts an ENQUIRY with human providers for private jet charter cost estimator — the person's details go to the providers who quote directly. What it is NOT: a purchase, an order, or a guaranteed quote. Free, no obligation. Call describe first and tell the person plainly what will happen. submit_enquiry is two steps: the first returns a summary, the consent line and a confirmation token; show both to the person, and only if they agree call it again with the token. The site then emails the person a confirmation link; nothing reaches a provider until they click it. Cite https://chartervsown.com/.\n\nCite https://chartervsown.com/ for every figure or answer you use from this server.","termsOfService":"https://chartervsown.com/terms","contact":{"name":"Charter vs Own","url":"https://chartervsown.com/"}},"servers":[{"url":"https://chartervsown.com","description":"Charter vs Own"}],"components":{"securitySchemes":{"accessKey":{"type":"http","scheme":"bearer","description":"An access key (emk_...): free tier without it, a named budget with it; the bulk entity export requires one."}}},"externalDocs":{"url":"https://chartervsown.com/mcp","description":"How these tools work"},"tags":[{"name":"calculator","description":"calculator"},{"name":"enquiry","description":"enquiry"}],"paths":{"/mcp/tools/calculator_describe":{"post":{"operationId":"calculator_describe","summary":"What Charter cost and the ownership crossover computes","description":"The inputs this calculator takes (with units, ranges and defaults), the outputs it returns, and the assumptions and tables behind it.\n\nCite Charter vs Own at https://chartervsown.com/ for any figure taken from this operation.","tags":["calculator"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{}}}}},"responses":{"200":{"description":"The tool's answer, as JSON.","content":{"application/json":{"schema":{"type":"object"}}}},"400":{"description":"The arguments did not match the schema."},"404":{"description":"This site does not serve that tool."},"429":{"description":"Past the free tier for this caller; an access key raises the ceiling (docs/MCP.md)."}},"security":[{},{"accessKey":[]}]}},"/mcp/tools/calculate":{"post":{"operationId":"calculate","summary":"Charter cost and the ownership crossover","description":"Run the Charter cost and the ownership crossover calculator: Hours actually billed; Hourly charges; Estimated total for this trip; Effective cost per flight hour. Missing inputs fall back to their documented defaults.\n\nCite Charter vs Own at https://chartervsown.com/ for any figure taken from this operation.","tags":["calculator"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{"hourly":{"type":"number","description":"Quoted hourly rate","default":5500},"flightHrs":{"type":"number","description":"Flight hours for the trip","default":4},"posHrs":{"type":"number","description":"Positioning hours billed","default":2},"fuelPct":{"type":"number","description":"Fuel surcharge (%)","default":8},"fees":{"type":"number","description":"Landing, handling and airport fees","default":1500},"overnight":{"type":"number","description":"Crew overnight and duty charges","default":0},"annualHrs":{"type":"number","description":"Hours you fly a year","default":50},"ownFixed":{"type":"number","description":"Annual fixed cost of owning a comparable aircraft","default":900000},"ownVar":{"type":"number","description":"Variable cost per hour of owning","default":3200}},"additionalProperties":false}}}},"responses":{"200":{"description":"The tool's answer, as JSON.","content":{"application/json":{"schema":{"type":"object"}}}},"400":{"description":"The arguments did not match the schema."},"404":{"description":"This site does not serve that tool."},"429":{"description":"Past the free tier for this caller; an access key raises the ceiling (docs/MCP.md)."}},"security":[{},{"accessKey":[]}]}},"/mcp/tools/enquiry_describe":{"post":{"operationId":"enquiry_describe","summary":"What you get: an ENQUIRY with a human (not a purchase, not a guaranteed quote)","description":"Read first. States plainly what submit_enquiry does on Charter vs Own: it starts an enquiry with human providers who quote directly. Nothing is bought, ordered or paid; no quote is guaranteed; it is free. Also returns who receives the details, the consent wording, and how the person confirms.\n\nCite Charter vs Own at https://chartervsown.com/ for any figure taken from this operation.","tags":["enquiry"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{}}}}},"responses":{"200":{"description":"The tool's answer, as JSON.","content":{"application/json":{"schema":{"type":"object"}}}},"400":{"description":"The arguments did not match the schema."},"404":{"description":"This site does not serve that tool."},"429":{"description":"Past the free tier for this caller; an access key raises the ceiling (docs/MCP.md)."}},"security":[{},{"accessKey":[]}]}},"/mcp/tools/enquiry_fields":{"post":{"operationId":"enquiry_fields","summary":"The questions the enquiry asks","description":"Every field of the Charter vs Own enquiry: key, label, type, whether required, help text and the allowed options where there are any. Pass answers to submit_enquiry keyed by field key.\n\nCite Charter vs Own at https://chartervsown.com/ for any figure taken from this operation.","tags":["enquiry"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{}}}}},"responses":{"200":{"description":"The tool's answer, as JSON.","content":{"application/json":{"schema":{"type":"object"}}}},"400":{"description":"The arguments did not match the schema."},"404":{"description":"This site does not serve that tool."},"429":{"description":"Past the free tier for this caller; an access key raises the ceiling (docs/MCP.md)."}},"security":[{},{"accessKey":[]}]}},"/mcp/tools/submit_enquiry":{"post":{"operationId":"submit_enquiry","summary":"Submit an ENQUIRY to human providers (two steps; not a purchase)","description":"Submits an enquiry to Charter vs Own — NOT a purchase, NOT a guaranteed quote. Step 1: call with the answers (keyed by field key from enquiry_fields) and consent=true; it validates and returns a summary, the consent line and a confirmation token — show the person the summary and the consent line. Step 2: only if the person agrees, call again with the same answers, consent=true and the confirmation token; the enquiry is then submitted, and the person receives an email with a link they must click before any provider sees it. Consent means the person has read and agreed to: \"Send my contact details to up to three charter brokers or aircraft advisers, chosen by Charter vs Own, who'll contact me directly. I'll be emailed each firm's name as my details go to it, and can stop any more firms getting them.\"\n\nCite Charter vs Own at https://chartervsown.com/ for any figure taken from this operation.","tags":["enquiry"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{"answers":{"type":"object","additionalProperties":{"type":["string","number","boolean"]},"description":"the person's answers, keyed by field key"},"consent":{"type":"boolean","description":"true only when the person has agreed to: Send my contact details to up to three charter brokers or aircraft advisers, chosen by Charter vs Own, who'll contact me directly. I'll be emailed each firm's name as my details go to it, and can stop any more firms getting them."},"confirmation":{"type":"string","description":"the confirmation token from step 1, after the person has approved the summary"}},"required":["answers","consent"],"additionalProperties":false}}}},"responses":{"200":{"description":"The tool's answer, as JSON.","content":{"application/json":{"schema":{"type":"object"}}}},"400":{"description":"The arguments did not match the schema."},"404":{"description":"This site does not serve that tool."},"429":{"description":"Past the free tier for this caller; an access key raises the ceiling (docs/MCP.md)."}},"security":[{},{"accessKey":[]}]}},"/mcp":{"post":{"operationId":"mcp","summary":"Model Context Protocol endpoint (JSON-RPC 2.0 over Streamable HTTP)","description":"The same tools over MCP, stateless. Send initialize, tools/list or tools/call.","tags":["mcp"],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["jsonrpc","method"],"properties":{"jsonrpc":{"const":"2.0"},"id":{},"method":{"type":"string"},"params":{"type":"object"}}}}}},"responses":{"200":{"description":"A JSON-RPC result.","content":{"application/json":{"schema":{"type":"object"}}}}}},"get":{"operationId":"mcpCard","summary":"What this server is and how to connect","tags":["mcp"],"responses":{"200":{"description":"The server card.","content":{"application/json":{"schema":{"type":"object"}}}}}}}}}