{"id":516870,"recorded_at":"2026-10-27T17:07:28.350814Z","observed_at":"2026-10-27T17:07:28.350700Z","subject_kind":"endpoint","subject":"f5716995-3b47-40ab-9582-fefec7058a7a","kind":"mcp.tools","method":"probe.mcp/1","body":{"count":3,"tools":[{"description":"Spillmark's method in brief: how a geo holdout test measures the sales Meta ads cause on Amazon, with links to the full method and a sample report on made-up numbers.","inputSchema":{"$schema":"http://json-schema.org/draft-07/schema#","properties":{},"type":"object"},"name":"how_lift_is_calculated"},{"description":"Spillmark's free Amazon and Meta ads calculators (holdout test size, incremental ROAS, break-even ROAS, ACoS, TACoS, Amazon fees and profit, LTV and CAC), with each one's inputs and example values. Use run_calculator to run one.","inputSchema":{"$schema":"http://json-schema.org/draft-07/schema#","properties":{"q":{"description":"Filter by words in the name or summary, e.g. 'holdout' or 'fees'","maxLength":60,"type":"string"}},"type":"object"},"name":"list_calculators"},{"description":"Runs one calculator from list_calculators on your numbers and returns the headline result, the supporting figures, a one-sentence reading, and a link that opens the calculator with the same inputs. Missing inputs use the calculator's example values. Enter percents as points (15 means 15%), choices as the option index.","inputSchema":{"$schema":"http://json-schema.org/draft-07/schema#","properties":{"currency":{"description":"Currency for money results. Default USD","enum":["USD","EUR","GBP","CAD","AUD"],"type":"string"},"inputs":{"additionalProperties":{"anyOf":[{"type":"number"},{"maxLength":32,"type":"string"},{"type":"null"}]},"description":"Input values by key","propertyNames":{"type":"string"},"type":"object"},"slug":{"description":"Calculator slug from list_calculators, e.g. holdout-test-calculator","maxLength":80,"minLength":1,"type":"string"}},"required":["slug"],"type":"object"},"name":"run_calculator"}]},"body_sha256":"ba2420980a7eca76b3a8c32eb72c507ee4d9c1511f7ecdaf7d195fda31c95013","prev_id":null,"leaf":"0xa5307fe2330794737c22fa1fe30ada4d9f99f15c00c81355c3c9e0730a9c86ee","leaf_text":"{\"body\":\"ba2420980a7eca76b3a8c32eb72c507ee4d9c1511f7ecdaf7d195fda31c95013\",\"id\":516870,\"kind\":\"mcp.tools\",\"method\":\"probe.mcp/1\",\"observed_us\":1793120848350700,\"prev\":null,\"subject\":\"f5716995-3b47-40ab-9582-fefec7058a7a\",\"subject_kind\":\"endpoint\"}","day":{"day":"2026-10-27","leaves":273461,"root":"0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795","chained":"0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4","anchor_chain":"eip155:5042002","anchor_tx":"0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4","anchor_block":69414147},"proof":["0xa5300e9f8713c79b9bb028fb9e71fd450d839043d2c29cbf3d1c7b2e20effed4","0xad7f3ad29dfce8f33c8d1d6d576fe0988dd21a157472cc2769b3a6adb996a619","0x0c669968f74821a8953c1014033253d07c60040fc24e65dae1a89e1860aba66f","0xe1ba7c9c997af9e55d1694c32e28fe7e0001ff08157664e54a4b2690fa76601d","0xbb7396fe80db7e566f71a8ed8d9c8d3304139905b479efbb5ee80d98b9f7f5c6","0x6e2b4ea2effbc61a735fcb33fd3d2bb02c6621a7418452e03e9d9547a8f0ca25","0xb4288add5b21a6bef4ddafb1d9f9eda937be94576a027e6892b7044591e8fd05","0xc9580a010807d02fc52659111436c29ec126bf2b3a69192528d381c6ed047dd0","0x1597abef3c2037a70f735bc9cc7fe97c6a501a79fbb453488d11a4036f75ff55","0xf883d1c3835d48d9bbf31812ab3494ca3e1fe07c42ed8768932a5a052f848a5d","0x69951fe7bef20c8209773a6c17f837f8a4e6e5fd13d18dd1c35d4587df471a68","0xc99f276d750460ec390a64510fe7ad6b609e36fddb943e81299b02a623e63048","0x87816aee66e8f6e0f1e55ea83733bb58cf9612d36c45fd5b7fc5d6f4484b78fd","0x0644f7e2a4b5bf9b66f185cc3fbb766d456ad94490183852f4c6db5855114cc5","0xa3fff4662cd48659f5bafd0612931759a90e53a7b4209ed8f26f6594a07bb547","0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7","0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66","0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197","0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699"]}