AIをフル活用してオンコール機能のプロトタイプを2日で作った話 / Building an AI-Powered On-Call Prototype in Just Two Days

by Narimichi Takamura

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AIΛϑϧ׆༻ͯ͠ ΦϯίʔϧػೳͷϓϩτλΠϓΛ 2೔Ͱ࡞ͬͨ࿩ ߴଜ ੒ಓʢ@nari_exʣ

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גࣜձࣾTopotalʢͱΆͨΔʣ • h#ps:/ /topotal.com • SREΛओ࣠ʹͨ͠ελʔτΞοϓ • 2ࣄۀΛӡӦ • SRE as a Service • SaaS for SREʢWaroomʣ 3

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SRE as a Service • topotal.com/services/sre-as-a-service • SREʹಛԽٕͨ͠ज़ࢧԉαʔϏε • ࢧԉͷྫ • SLI/SLOͷಋೖɾӡ༻վળ • CI/CDͷߏஙɾվળ • ΠϯγσϯτϚωδϝϯτͷվળ 4

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WaroomʢΘΔʔΉʣ • ΠϯγσϯτϚωδϝϯτSaaS • Slack ϕʔεͷରԠʹ߹ΘͤͯࣗಈԽɾ লྗԽ͕Ͱ͖Δ • AIΛ༻͍ͨݪҼ੾Γ෼͚ɾ෮چ • ਓ਺ແ੍ݶͷΦϯίʔϧػೳ 5

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͸͡Ίʹ • PdMͱͯ͠ AIΛ͔ͭͬͯ৽ػೳͷϓϩτλΠϓΛͭ͘Δ աఔͰ ಘֶͨͼΛڞ༗͠·͢ • ʮAI࣌୅ʹͲ͏ϓϩμΫτΛ࡞Δͷ͔ʯΛߟ͑Δ͖͔͚ͬʹͳ Ε͹خ͍͠Ͱ͢ 6

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ຊެԋͷର৅ऀ • AIίʔσΟϯάπʔϧʢVibe Codingʣʹڵຯ͕͋Δํ • ϓϩμΫτ։ൃ΍৽ػೳ։ൃʹܞΘ͍ͬͯΔΤϯδχΞ • AI࣌୅ͷ࢓༷ࡦఆ΍ϓϩτλΠϐϯάͷਐΊํΛ஌Γ͍ͨํ 7

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൵ئͩͬͨΦϯίʔϧػೳ • ϦϦʔε౰ॳ͔Βཁ๬͕ઈ͑ͳ͍ͷػೳͷҰͭ • ʮ͍͔ͭ࡞Ζ͏ʯ ͱࢥͬͯ5೥͕ܦա͍ͯͨ͠... 8

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͖͔͚ͬ͸ࣾ಺ษڧձ • 2026/01্०ɺVibe Codingͷ޷ྫ͕֤ॴͰੜ·Ε͍ͯͨ • ࣾ಺ษڧձͰʮexe.dev͕͍͢͝ʯ͜ͱΛ஌Δ • ౰࣌ͷࣗ਎ͷग़஗ΕײΛײ͓ͯ͡ΓɺҰ୴৮ͬͯΈΔ͜ͱʹ • Ͳ͏ͤ΍ΔͳΒɺϞνϕͷग़Δ΋ͷΛͭ͘Γ͍ͨ → ࢼ͠ʹΦϯίʔϧػೳΛ࡞ͬͯΈΑ͏ 9

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Φϯίʔϧػೳͱ͸ • ো֐͕ى͖ͨͱ͖ʹి࿩௨஌Λ͢Δ࢓૊Έ • ೲಘײͷ͋Δి࿩௨஌Λ࣮ݱ͢ΔͨΊʹɺࡉ͔ͳػೳཁٻ͕͋Δ • εέδϡʔϧ؅ཧ • ϩʔςʔγϣϯ؅ཧ • ແԠ౴ɾԠ౴࣌ͷΤεΧϨʔγϣϯ • ௨஌ͷূ੻؅ཧ 10

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exe.dev - ର࿩͠ͳ͕Β։ൃͰ͖ΔVM Hos-ngαʔϏε1 • AIΤʔδΣϯτʢShelleyʣͱνϟοτ͠ͳ͕Β։ൃ • VM্Ͱίʔυͷ࣮૷ɾ࣮ߦɾमਖ਼Λ܁ΓฦͤΔ • HTTPS෇͖Ͱͦͷ··ΞϓϦΛެ։Ͱ͖Δ • αʔόʔߏங΍σϓϩΠΛ΄ͱΜͲҙࣝ͠ͳͯ͘Α͍ 1 exe.dev - AI࣌୅ͷVM Hos0ngαʔϏε 11

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࠷ॳʹ΍ͬͨ͜ͱ • ʮWaroom͸͜ΜͳϓϩμΫτͰ͢ɻʯ • ʮΦϯίʔϧػೳΛ࡞͍ͬͯͩ͘͞ɻʯ → 20෼ޙ… 12

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࣮༻Ͱ͖ͳ͍΋ͷ͕Ͱ͖ͨ 13

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೦ͯ͡΋ཧ૝ͷ΋ͷ͸Ͱ͖ͳ͍ • ࠶ܝ: AI͸ຐ๏Ͱ͸ͳ͍ → ͪΌΜͱ࢓༷Λߟ͑Α͏ 14

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Vibe Codingલͷ४උΛ͢Δ • ౰͔࣌Β࢖͍׳Ε͍ͯͨChatGPT Deep Research Λར༻ • ҎԼͷ3εςοϓͰ४උʢݴޠԽɺ࢓༷ࡦఆʣΛͨ͠ 1. ڝ߹ௐࠪ 2. ࠷খݶͷػೳʢMVPʣΛఆٛ͢Δ 3. ࢓༷ॻͱͯ͠Ξ΢τϓοτ 15

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Step1: ڝ߹Λௐ΂Δ • ޙൃͷΦϯίʔϧαʔϏεΛϝΠϯͰ৘ใऩू • incident.io • Rootly • Datadog On-Call 16

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Step2: MVPΛߟ͑Δ • ֤ࣾͷڞ௨ػೳ͔ΒMVPͷ͖ͨͨ୆Λ࡞੒ • ϖϧιφΛఆٛ͠ɺMVPΛϒϥογϡΞοϓ • ͞Βʹ࣮ମݧ΍ސ٬͔ΒಘͨΦϯίʔϧػೳ΁ͷϖΠϯΛ൓ө 17

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Step3: AI޲͚࢓༷ॻΛ࡞Δ • exe.devͰ͸ɺShelley ͱ͍͏ΤʔδΣϯτ͕ར༻͞Ε͍ͯΔ • ࠓճ͸ʮShelley͕ཧղ͠΍͍͢ܗͰ࢓༷ʯΛग़͢Α͏ʹࢦࣔ • ࠓࢥ͑͹ʮ࣮૷AI͕ཧղ͠΍͍͢ܗࣜʯͰΑͦ͞͏ → AI͕ཧղ͠΍͍͢࢓༷ॻ ͕׬੒ 18

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͋ͱ͸ exe.dev • exe.devʹ࢓༷ॻΛషΓ෇͚Δ • 20෼͘Β͍଴ͭ → ͦΕͳΓʹಈ͘΋ͷ͕Ͱ͖ͨ 19

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Ͱ΋ऴΘΓ͡Όͳ͍ ৮ͬͯΈͯɺࡉ͔ͳෆ଍ʹ͸͡Ίͯؾͮ͘ • ಋઢ͕ѱ͍ • σβΠϯ͕ඍົ • ෆཁͳϘλϯ͕͋Δ • ৘ใ͕ଟ͍ɾগͳ͍ → ཧ૝ʹ͸ఔԕ͍ 21

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AIͱର࿩͠ɺഁյͱ૑଄Λ܁Γฦ͢ • τʔΫϯ੍ݶΛҙࣝ͠ͳ͕Βɺ෼୲ͯ͠ฒߦ͠ͳ͕Βϒϥογ ϡΞοϓ • ChatGPT: ࢓༷ͷϒϥογϡΞοϓ • exe.dev: εΩʔϚɺίʔυ΍σβΠϯͷ૬ஊɾมߋ • Why ͸ ࣗ෼ɺWhat ͸ ChatGPTɺHow ͸ exe.dev ΁ΞαΠϯ 22

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ि໌͚ʹνʔϜʹڞ༗ͨ͠ͱ͜Ζ • ʮΑͦ͞͏ʯʮ໰୊͕ͳͦ͞͏ʯ • Ұ୴ɺ͜ΕΛ࣋ͬͯϢʔβʔώΞϦϯάͯ͠Έ·͠ΐ͏͔ • ঎ஊ͕ͦͷ೔͔Βෳ਺݅ൃੜ͢Δ͜ͱʹ → ಈ͘΋ͷ͕͋ΔͱͲΜͲΜ࿩͕ਐΉɻϓϩμΫτͮ͘Γʹ੎͍ ͕૿ͨ͠ʂ 24

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·ͱΊ 25

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ࣗ෼ͳΓͷ։ൃαΠΫϧ ͷܕ͕Ͱ͖ͨ • ʮ۩ମతʹಈ͘΋ͷʯΛੜΈग़͢· ͰɺPdM͕ࣗ૸Ͱ͖Δ • →࢓༷ͷઆ໌ίετʙ࢓༷վળ͕ര ଎ʹ!! • ݱঢ়͸ɺAI׆༻ͷલޙͰਓ͕඼࣭Λߴ ΊΔऔΓ૊Έ͕ඞਢ 26

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AI͸վળͷϧʔϓΛര଎ʹͯ͘͠Εͨ • ʮࣦഊ͢Δίετʯ͕ܶతʹԼ͕Δ ͜ͱͷՁ஋Λڧ࣮͘ײ • େ୾ʹյͯ͠େ୾ʹ࡞Γ௚ͤΔ఺͕ɺϓϩτλΠϓͮ͘Γͱ૬ ੑόονϦ • εϐʔυͷ֫ಘ͸͔ΜͨΜ ɺҰํͰɺՁ஋ͷ֫ಘ͸Ή͔͍ͣ͠ 27

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ࠓճͷֶͼ • 1. ೦ͯ͡΋μϝɻAI͸ΤεύʔͰ͸ͳ͍ • 2. Α͍΋ͷΛ࡞Δʹ͸ɺਂ͍ࢥߟͱݴޠԽ͕ඞཁ • 3. ཧ૝ͱͷΪϟοϓΛຒΊͯ͸͡ΊͯՁ஋͕ग़Δ 28

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͋Γ͕ͱ͏͍͟͝·ͨ͠ 29