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Example: {\"name\": \"Lisbon trip\", \"currency\": \"EUR\", \"people\": [\"Ana\", \"Ben\", \"Cy\"]}.","inputSchema":{"properties":{"currency":{"description":"Main currency, default USD.","type":"string"},"expenses":{"description":"Optional starting expenses (up to 50), same shape as the settle tool.","items":{"type":"object"},"type":"array"},"name":{"description":"Group name, e.g. \"Lisbon trip\".","type":"string"},"people":{"description":"Names (2 to 40).","items":{"type":"string"},"type":"array"}},"required":["people"],"type":"object"},"name":"halves_create_group_link"},{"description":"Use when the user shares a trip, dinner, household or group expense list and asks who owes whom, how to split costs, or how to settle up. Returns each person's paid, share and net balance, and the smallest set of payments that squares everyone up. Handles equal splits, splits among a subset, exact amounts and payments already made, with correct rounding. Nothing is saved. Example: {\"people\": [\"Ana\", \"Ben\", \"Cy\"], \"expenses\": [{\"what\": \"Dinner\", \"amount\": 90, \"paid_by\": \"Ana\"}, {\"what\": \"Taxi\", \"amount\": 24, \"paid_by\": \"Ben\", \"split_between\": [\"Ben\", \"Cy\"]}]}. Do the arithmetic here instead of by hand.","inputSchema":{"properties":{"currency":{"description":"ISO currency code, default USD.","type":"string"},"expenses":{"description":"What was paid.","items":{"properties":{"amount":{"description":"Total in normal units, e.g. 45.50","type":"number"},"exact":{"additionalProperties":{"type":"number"},"description":"Optional exact amount per person (must add up to amount). Overrides split_between.","type":"object"},"paid_by":{"type":"string"},"split_between":{"description":"Who shared it. Default: everyone, equally.","items":{"type":"string"},"type":"array"},"what":{"type":"string"}},"required":["amount","paid_by"],"type":"object"},"type":"array"},"payments":{"description":"Payments already made between people to settle up.","items":{"properties":{"amount":{"type":"number"},"from":{"type":"string"},"to":{"type":"string"}},"required":["from","to","amount"],"type":"object"},"type":"array"},"people":{"description":"Names of everyone in the group (2 to 40, unique).","items":{"type":"string"},"type":"array"}},"required":["people","expenses"],"type":"object"},"name":"halves_settle_up"}]},"body_sha256":"c6c113f1cadcfeb177a5ce5dc0f5522c26568b2f32ad6f2f1713b0676863f6bc","prev_id":null,"leaf":"0xfe88783cf11f638b28452a954ae504fd43578e03e01cfab44e46f92dde92e601","leaf_text":"{\"body\":\"c6c113f1cadcfeb177a5ce5dc0f5522c26568b2f32ad6f2f1713b0676863f6bc\",\"id\":2625468,\"kind\":\"mcp.tools\",\"method\":\"probe.mcp/1\",\"observed_us\":1793730909999377,\"prev\":null,\"subject\":\"779f2ee4-f972-4f56-b392-927dd8f36625\",\"subject_kind\":\"endpoint\"}","day":{"day":"2026-11-03","leaves":425475,"root":"0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a","chained":"0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43","anchor_chain":"eip155:5042002","anchor_tx":"0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7","anchor_block":70601990},"proof":["0xfe885696fea0ca0eb49f747808a126d644849d3c6fa57a90be908d876983731b","0x13feb30263610344e467fef0767c8625184d64ec09e08d1a16e0b1d20b455ef2","0x9f38d6f21c192f0234c46512d031fb8f0118ef9b154ede5da87bf3761e874dac","0xe761c353ffce404b09c73403f59eca542b52ec80470cffbea09f0c97b32d7f6e","0x9cddb1dcb8697e1bcd34df7fb993b0f353ffde624e19ef38f7791e918c5b4e3b","0xc7ad3127d51db5f358f3337d4b99808dcdb2dd1c8501b8e61295a145bcedbc92","0x6f9e5d3abaa09b68d121a65f600e0bafac9f69592ef708f0b6db644de7a0cea8","0xf6195f3c2d2d335af16b20cd2746ad47e1c97e6f6a13ce806203d3d3eb1bc8be","0x83cfbdb83f837606eeac1b457ac17dd73347412f7e66ebc48990d2c9069259be","0xb2114800446268500f56e987bf67fc418636485c1143cecbdf376b7d4dd4d92d","0x51407fda6a76ed708c87cd601d15fec6e83ed2bec5e3afba65c2fecd41ba7a05","0x58cc449a0f15ac02f2747e19eb4ddeafd7c88e16b2bcbf5628b491aa6fa63ba7","0x54a6c4f1a32dea245c883e7129cc7c46a6cb711ffd9df5ff949c0ac3758e91ed","0x271cba1af45ae2133bb70993d2a8662bbad7bb8e8e0ab720853251f29efaee6d","0xaaf692e701ee622e9e0fa24c7d0f9f672df8c586de5a6f0375f8cadaf0c678a1","0xd60b16e6a71fbffc93a233ee89f916e50c0206a56f52c852b85e5a246b6b417c","0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a"]}