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thirdlf03
September 19, 2025
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cursorで実践するContext Engineering
thirdlf03
September 19, 2025
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Transcript
CursorͰ࣮ફ͢Δ Context Engineering @thirdlf
ࣗݾհ ໊લɿ thirdlf(͞ͲΔ;) 27ଔͷֶੜ ੜAIܦݧ: GPT3.5͔࣌Β X: @thirdlf1
օ͞ΜCursor ͖Ͱ͢ΑͶʁʁ
Cursorͷ͕͜͜ྑ͖ • Tabิ͕༏ल • ίϯςΩετͷऔΓࠐΈํ͕༏ल • ͍ΖΜͳϞσϧ͕͑Δ • VSCodeͷExtensionΛ͑Δ •
ChatͷCheckpoint • ֶੜʹ༏͍͠
Cursorͷྗ Ͳ͜·ͰҾ͖ग़ͤͯ·͔͢ʁ
ຊͷΰʔϧ • CursorͷϙςϯγϟϧΛ120%Ҿ͖ग़͢ʮContext EngineeringʯΛཧղ͢Δ • Context EngineeringͱPrompt Engineeringͷҧ͍Λཧղ͢Δ
Prompt Engineeringʹ͍ͭͯ ͍ͬͯΔํ🙋
Context Engineeringʹ͍ͭͯ ͍ͬͯΔํ🙋
Կ͕ҧ͏ͷʁ
Կ͕ҧ͏ͷ? Context Engineering over Prompt Engineering. →ϓϩϯϓτΤϯδχΞϦϯάΛ͑ͨͷ͕ίϯςΩετΤϯδχΞ Ϧϯά
Prompt Engineeringͱʁ • Prompt Engineeringɺ୯ҰͰࣗݾ݁ܕͷϓϩϯϓτʢࢦ࣭ࣔ ʣΛ࡞͠ɺLLM͔Βྑ͍ճΛಘΔ͜ͱʹযΛٕͯͨज़ • Context੩తͳจࣈྻͱͯ͠ѻΘΕɺෳࡶͳϫʔΫϑϩʔಈతͳ ใγεςϜʹରԠ͖͠Εͳ͍ͱ͍͏ݶք͕͋Δ
Context Engineeringͱʁ • ਪ࣌ʹ͓͚ΔAIϞσϧΛऔΓר͘ɺ੩త͓Αͼಈతͳͯ͢ͷใ Λମܥతʹઃܭɺߏஙɺཧ͢Δϓϩηε Andrej Karpathyࢯɺʮ࣍ͷεςοϓʹඞཁͳʰదͳใʱΛίϯ ςΩετΟϯυʹຒΊΔɺણࡉͳܳज़ͱՊֶʯͩͱड़͍ͯΔ
Ͱɺ݁ہԿ͕ҧ͏ͷ? Prompt Engineeringͷয: ԿΛਘͶΔ͔ Context Engineeringͷয: ϞσϧʹԿΛݟͤΔͷ͔ɺͦͷ$ontextΛ Ͳ͏ཧ͢Δͷ͔
ิʣContextͱ ContextͱɺLLM͕ਖ਼֬ͰҰ؏ੑͷ͋ΔԠΛੜ͢ΔͨΊʹɺਪ ࣌ʹఏڙ͞ΕΔؔ࿈ใͷू߹શମ
࣮ࡍʹͬͯΈͨ • ࣗݾհϖʔδΛCursorͬͯ࡞ͬͯΈΔ ݅ • Agent: AutoͷΈ༻Մೳ • TabิͰࡉ͔͍मਖ਼OK (جຊ͠ͳ͍ʣ
Prompt Only ͱΓ͋͑ͣ࡞ͬͯΒ͏
Prompt thirdlfͷεϚϗͰӾཡ༻ͷࣗݾհϖʔδΛ࡞͍ͬͯͩ͘͞ɻ XͷID@thirdlf1Ͱ͢ɻ
None
None
Կ͕ѱ͍ʁ ใ(Context)͕શવΓͯͳ͍
ࣗݾհ ໊લɿ thirdlf(͞ͲΔ;) 27ଔͷֶੜ X: @thirdlf1
ࣗݾհ ໊લɿ thirdlf(͞ͲΔ;) ઐ߈: AIؔʢ27ଔͷֶੜʣ झຯ: ϋοΧιϯɺϥΠϒɺLT Α͘͏ݴޠ: Python ੜAIܦݧ:
GPT3.5͔࣌Β X: @thirdlf1
Prompt Engineering • ϓϩϯϓτΛ͠ɺ্هͷՃใʢࣗݾհʣΛΑΓޮՌతʹར ༻͢Δɻ • Few-shot promptingChain-of-Thought (CoT)ͳͲͷख๏Λ༻͍ͯɺ ϞσϧͷਪΛࢧԉͯ͠ΈΔɻ
Prompt ͋ͳͨϓϩͷϓϩάϥϚʔͰ͢ɻҎԼͷϢʔβʔใͱ੍ʹج͍ͮͯɺεϚϗͰ࠷దͳࣗݾհϖʔδΛ Next.jsͰੜ͍ͯͩ͘͠͞ɻ ʲׂͱతʳ: ࠙ձͰ͑ΔΑ͏ʹɺ؆ૉ͚ͩͲັྗతͳࣗݾհϖʔδʹ͍ͯͩ͘͠͞ɻ ʲϢʔβʔใʳ: ໊લ: thirdlf(͞ͲΔ;) ઐ߈: AIؔʢ27ଔͷֶੜʣ
झຯ: ϋοΧιϯɺϥΠϒɺLT Α͘͏ݴޠ: Python ੜAIܦݧ: GPT3.5͔࣌Β X: @thirdlf1 ʲλεΫʳ: ্هͷใͷΈ༻ͯ͠࡞͍ͯͩ͘͠͞ɻ
None
Context Engineering ಈతʹContextΛ༩͑Δɻ
Context EngineeringͷͨΊͷπʔϧػೳ • Rules • MCP • @ Symbol •
Indexing & Docs
Rules
None
@ Symbol • @ϑΝΠϧ & ϑΥϧμ: ϑΝΠϧϑΥϧμશମΛAIͷରͷจ຺ʢίϯςΩετʣͱͯ͠ಡΈ͜Ή • @De fi
nitions: ίʔυͷத͔Βؔ࿈͢ΔؔΫϥεͷఆٛΛࣗಈతʹݟ͚ͭग़͠ɺίϯςΩετʹՃɻ • @Code: ϑΝΠϧશମͰͳ͘ɺಛఆͷίʔυͷҰ෦͚ͩΛબͯ͠ίϯςΩετʹؚΊΔɻ • @Docs: ϥΠϒϥϦϑϨʔϜϫʔΫͷެࣜυΩϡϝϯτΛࢀর͠ͳ͕ΒɺAIͱରͰ͖Δɻ • @Git: ίϛοτϒϥϯνͷࠩͳͲɺGitͷมߋཤྺΛίϯςΩετͱͯ͠ར༻͢Δɻ • @Past Chats: աڈͷAIͱͷձཤྺΛݺͼग़͠ɺจ຺ΛҾ͖ܧ͍ͰରΛଓ͚ΒΕΔɻ • @Cursor ϧʔϧ: ϓϩδΣΫτ༻ʹઃఆͨ͠ίʔσΟϯάنϧʔϧΛAIʹద༻͢Δɻ • @Web: ΣϒݕࡧΛ࣮ߦ͠ɺ࠷৽ͷใΛAIͷίϯςΩετʹՃ͢Δɻ • @Link: URLΛషΓ͚Δ͜ͱͰɺͦͷΣϒϖʔδPDFͷ༰ΛಡΈࠐ·ͤΔɻ • @Recent Changes: ۙͰߦͬͨίʔυͷมߋΛAIͷίϯςΩετͱͯ͠ࢀর͢Δɻ • @Linter Errors: ίʔυੳπʔϧʢLinterʣ͕ݕग़ͨ͠ΤϥʔܯࠂΛAIʹ͑Δɻ •
MCP આ໌লུ ࠓճͬͨMCPɺContext7(υΩϡϝϯτݕࡧͯ͠ใ༩͑ͯ͘ΕΔ ͭʣͱPlaywright MCP(E2Eςετͯ͘͠ΕΔͭʣ
Indexing & Docs
Prompt ͋ͳͨϓϩͷϓϩάϥϚʔͰ͢ɻҎԼͷϢʔβʔใͱ੍ʹج͍ͮͯɺεϚϗͰ࠷దͳࣗݾհϖʔδΛ Next.jsͰੜ͍ͯͩ͘͠͞ɻ ʲׂͱతʳ: ࠙ձͰ͑ΔΑ͏ʹɺ؆ૉ͚ͩͲັྗతͳࣗݾհϖʔδʹ͍ͯͩ͘͠͞ɻ ʲϢʔβʔใʳ: ໊લ: thirdlf(͞ͲΔ;) ઐ߈: AIؔʢ27ଔͷֶੜʣ
झຯ: ϋοΧιϯɺϥΠϒɺLT Α͘͏ݴޠ: Python ੜAIܦݧ: GPT3.5͔࣌Β X: @thirdlf1 ʲλεΫʳ: ্هͷใͷΈ༻ͯ͠࡞͍ͯͩ͘͠͞ɻ
None
͋Μ·ΓΫΦϦςΟมΘΒͳ͍ʁ σβΠϯͦ͜ҧ͏ͷͷɺͦΜͳʹมΘΒͳ͍ؾ͕͢Δ…
None
Context൛ Prompt൛
·ͱΊ • Context Enginnering࣮ࡍͷΤϯδχΞϦϯάʹ͍ۙ • CursorΛ͑खܰʹ࣮ફͰ͖Δ • ͬͯΈΑ͏
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠