{"id":651630,"date":"2025-10-20T13:37:24","date_gmt":"2025-10-20T12:37:24","guid":{"rendered":"https:\/\/blog.jetbrains.com\/?post_type=ai&#038;p=651630"},"modified":"2025-10-20T13:37:29","modified_gmt":"2025-10-20T12:37:29","slug":"koog-a2a-building-connected-ai-agents-in-kotlin","status":"publish","type":"ai","link":"https:\/\/blog.jetbrains.com\/ko\/ai\/2025\/10\/koog-a2a-building-connected-ai-agents-in-kotlin\/","title":{"rendered":"Koog \u00d7 A2A: Kotlin\uc73c\ub85c \uad6c\ud604\ud558\ub294 \uc0c1\ud638 \uc5f0\ub3d9\ub418\ub294 AI \uc5d0\uc774\uc804\ud2b8"},"content":{"rendered":"<p>\uc5ec\ub7ec AI \uc5d0\uc774\uc804\ud2b8\ub85c \uad6c\uc131\ub41c \uc2dc\uc2a4\ud15c\uc744 \uad6c\ucd95\ud574 \ubcf4\uc558\ub2e4\uba74, \uc544\ub9c8\ub3c4 \ubb38\uc81c\ub97c \uacaa\uc5b4 \ubcf4\uc168\uc744 \uac81\ub2c8\ub2e4. \ucc98\uc74c\uc5d0\ub294 \uaf64 \ub2e8\uc21c\ud558\uac8c \uc2dc\uc791\ud569\ub2c8\ub2e4. \ud55c \uc5d0\uc774\uc804\ud2b8\ub294 \ube14\ub85c\uadf8 \uac8c\uc2dc\ubb3c\uc744 \uc791\uc131\ud558\uace0, \ub2e4\ub978 \uc5d0\uc774\uc804\ud2b8\ub294 \uc774\ub97c \uad50\uc815\ud558\uba70, \uc544\ub9c8\ub3c4 \uc138 \ubc88\uc9f8 \uc5d0\uc774\uc804\ud2b8\ub294 \uc774\ubbf8\uc9c0\ub97c \uc81c\uc548\ud558\uac70\ub098 \uc0dd\uc131\ud558\ub3c4\ub85d \ud588\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uac1c\ubcc4\uc801\uc73c\ub85c \ubcf4\uba74, \uac01 \uc5d0\uc774\uc804\ud2b8\ub294 \uc790\uae30 \uc77c\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \ud574\ub0c5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ud568\uaed8\ub77c\uba74 \uc5b4\ub5a8\uae4c\uc694? \uc5ec\uae30\uc11c \ubb38\uc81c\uac00 \uc0dd\uae30\uae30 \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n<p>\uac01 \uc5d0\uc774\uc804\ud2b8\ub294 \uc790\uc2e0\uc758 &#8216;\uc5b8\uc5b4&#8217;\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ud55c \uc5d0\uc774\uc804\ud2b8\ub294 \uc0c1\uc774\ud55c API \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\uace0, \ub2e4\ub978 \uc5d0\uc774\uc804\ud2b8\ub294 \uace0\uc720\ud55c \uba54\uc2dc\uc9c0 \ud615\uc2dd\uc744 \uac00\uc9c0\uace0 \uc788\uc73c\uba70, \uc774 \ubaa8\ub450\uc5d0 \ud2b9\uc815\ud55c \uc778\uc99d \uc694\uac74\uc774 \uc788\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc774\ub4e4\uc774 \uc11c\ub85c \uc18c\ud1b5\ud558\uac8c \ud558\ub824\uba74 \uac01 \uc5f0\uacb0\ub9c8\ub2e4 \uadf8\uc5d0 \ub9de\ub294 \ud1b5\ud569 \ucf54\ub4dc\ub97c \uc791\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uac00\uad50\ub97c \ub9cc\ub4dc\ub294 \uc77c\uc5d0 \ubb36\uc5ec \uc815\uc791 \uc5d0\uc774\uc804\ud2b8\ub97c \ub354 \uc9c0\ub2a5\uc801\uc774\uace0 \ube60\ub974\uba70 \uc720\uc6a9\ud558\uac8c \ub9cc\ub4dc\ub294 \ub370\ub294 \uc18c\ud640\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\">A2A\uc758 \uc5ed\ud560: \uc5d0\uc774\uc804\ud2b8 \uac04 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158 \uacc4\uce35<\/h2>\n<p><strong>\uc5ec\uae30\uc11c <\/strong><a href=\"https:\/\/a2a-protocol.org\/latest\/\" target=\"_blank\" rel=\"noopener\"><strong>Agent2Agent(A2A) \ud504\ub85c\ud1a0\ucf5c<\/strong><\/a><strong>\uc758 \ud6a8\uc6a9\uc131\uc774 \ubc1c\ud718\ub429\ub2c8\ub2e4.<\/strong><\/p>\n<p>AI \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uc744 \uc704\ud55c \ubc94\uc6a9 \ubc88\uc5ed\uc0ac \uc5ed\ud560\uc744 \ud558\ub294 A2A\ub97c \uc774\uc6a9\ud558\uba74 \uc5d0\uc774\uc804\ud2b8\uac00 \ud45c\uc900\ud654\ub41c \ud504\ub85c\ud1a0\ucf5c\uc744 \ud1b5\ud574 \uc9c1\uc811 \uc18c\ud1b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ube14\ub85c\uadf8 \uc791\uc131 \uc5d0\uc774\uc804\ud2b8\ub294 \ucf58\ud150\uce20\ub97c \uad50\uc815 \uc5d0\uc774\uc804\ud2b8\uc5d0\uac8c \ub9e4\ub044\ub7fd\uac8c \uc804\ub2ec\ud558\uace0, \uc774 \uacfc\uc815\uc5d0\uc11c \uc774\ubbf8\uc9c0 \uc0dd\uc131 \uc5d0\uc774\uc804\ud2b8\uac00 \ud2b8\ub9ac\uac70\ub429\ub2c8\ub2e4. \uad50\uc815 \uc5d0\uc774\uc804\ud2b8\ub294 \uc218\uc815 \uc0ac\ud56d\uc744 \ub418\ub3cc\ub824 \ubcf4\ub0b4\uba70, \uc774\ubbf8\uc9c0 \uc0dd\uc131 \uc5d0\uc774\uc804\ud2b8\ub294 \uc2a4\ud0c0\uc77c \uad00\ub828 \uc138\ubd80 \uc9c0\uce68\uc744 \uc694\uccad\ud569\ub2c8\ub2e4. \uc989, \ud558\ub098\uc758 \ud1b5\ud569\ub41c \ucee4\ubba4\ub2c8\ucf00\uc774\uc158 \uacc4\uce35\uc744 \ud1b5\ud574 \ubaa8\ub4e0 \uc791\uc5c5\uc774 \uc870\uc815\ub429\ub2c8\ub2e4.<\/p>\n<p>A2A\ub294 \uc218\uc2ed \uac1c\uc758 \ub2e8\uc77c \uc5f0\uacb0\uc744 \uad00\ub9ac\ud558\ub294 \ub300\uc2e0 \ub2e4\uc74c\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\ud50c\ub7ec\uadf8\uc564\ud50c\ub808\uc774 \uc5f0\uacb0<\/strong>: \uc5d0\uc774\uc804\ud2b8\uac00 \uc11c\ub85c\ub97c \uc790\ub3d9\uc73c\ub85c \uac80\uc0c9\ud558\uace0 \uc5f0\uacb0<\/li>\n<li><strong>\ud45c\uc900\ud654\ub41c \uba54\uc2dc\uc9d5<\/strong>: \ub2e8\uc77c \ud615\uc2dd, \uba85\ud655\ud55c \ud504\ub85c\ud1a0\ucf5c \ubc0f \ubcc0\ud658 \ud544\uc694\uc131 \ud574\uc18c<\/li>\n<li><strong>\uc624\ucf00\uc2a4\ud2b8\ub808\uc774\uc158 \ub0b4\uc7a5<\/strong>: \uc6cc\ud06c\ud50c\ub85c\ub9cc \uc815\uc758\ud558\uba74 A2A\uac00 \uc54c\uc544\uc11c \uc870\uc728<\/li>\n<li><strong>\ubcf5\uc7a1\uc131 \uc5c6\uc774 \ud655\uc7a5<\/strong>: \uae30\uc874 \uc5f0\uacb0\uc744 \uc218\uc815\ud558\uc9c0 \uc54a\uace0 \uc5d0\uc774\uc804\ud2b8\ub97c \ucd94\uac00\ud558\uac70\ub098 \uc7ac\uc0ac\uc6a9<\/li>\n<\/ul>\n<p>\uacb0\uacfc\ub294 \uc5b4\ub5a8\uae4c\uc694? \ucee4\ubba4\ub2c8\ucf00\uc774\uc158\uc744 \ub514\ubc84\uadf8\ud558\ub294 \ub300\uc2e0 \uc5d0\uc774\uc804\ud2b8\uc758 \uae30\ub2a5\uc744 \uac1c\uc120\ud558\ub294 \ub370 \uc2dc\uac04\uc744 \ud560\uc560\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubb34\uc5c7\ubcf4\ub2e4 \uc6d0\ud558\ub294 \uc5b4\ub5a4 \uc5b8\uc5b4\ub098 \ud504\ub808\uc784\uc6cc\ud06c\ub85c\ub4e0 \uc5d0\uc774\uc804\ud2b8\ub97c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. JVM \uc0ac\uc6a9\uc790\uc758 \uacbd\uc6b0, Koog\uac00 \uac00\uc7a5 \ub9ce\uc740 \uc120\ud0dd\uc744 \ubc1b\uc73c\uba70 \ubc84\uc804 0.5.0 \uae30\uc900\uc73c\ub85c A2A \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uacfc \uc6d0\ud65c\ud558\uac8c \ud1b5\ud569\ub429\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\">Koog\uc758 \uc5ed\ud560: \ub0b4\ubd80 \uc624\ucf00\uc2a4\ud2b8\ub808\uc774\uc158 \uc5d4\uc9c4<\/h2>\n<p>Koog\ub294 JVM, Android, iOS, WebAssembly \ubc0f \ube0c\ub77c\uc6b0\uc800 \ub0b4 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ud0c0\uae43\uc73c\ub85c AI \uc5d0\uc774\uc804\ud2b8\ub97c \uad6c\ucd95\ud558\uae30 \uc704\ud55c Kotlin \uae30\ubc18 \ud504\ub808\uc784\uc6cc\ud06c\uc785\ub2c8\ub2e4. \uc7a5\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\ubcf5\uc7a1\ud55c \uc6cc\ud06c\ud50c\ub85c \uad00\ub9ac<\/strong>: \ub8e8\ud504, \ube0c\ub79c\uce58, \ud3f4\ubc31 \ubc0f \ubcd1\ub82c \ube0c\ub79c\uce58 \uc2e4\ud589\uc758 \ub3c4\uc6c0\uc744 \ubc1b\uc544 \uadf8\ub798\ud504 \uae30\ubc18\uc758 \uc804\ub7b5\uc744 \uc124\uacc4\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ubc14\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uad6c\uc131 \uc694\uc18c<\/strong>: LLM\uacfc \uc678\ubd80 \ub3c4\uad6c\ub97c \ud638\ucd9c\ud558\uace0, \uba54\uc2dc\uc9c0 \ub0b4\uc5ed\uc744 \uc694\uc57d\ud558\uba70 \uc804\uccb4 \uc804\ub7b5\uc744 \uc2e4\ud589\ud558\ub294 \ub370 \ub0b4\uc7a5 \ub178\ub4dc\ub97c \ud65c\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ub3c4\uad6c \uc624\ucf00\uc2a4\ud2b8\ub808\uc774\uc158<\/strong>: \ucf54\ub4dc\uc758 \uc5b4\ub5a4 \ud568\uc218\ub4e0 AI \uc5d0\uc774\uc804\ud2b8\uac00 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ub3c4\uad6c\ub85c \uc804\ud658\ud569\ub2c8\ub2e4. \uc21c\ucc28\uc801\uc73c\ub85c, \ub610\ub294 \ub3d9\uc2dc\uc801\uc73c\ub85c\ub3c4 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ub124\uc774\ud2f0\ube0c MCP \ud1b5\ud569<\/strong>: Kotlin MCP SDK\ub97c \uc0ac\uc6a9\ud558\ub294 \ubaa8\ub4e0 MCP \uc11c\ubc84\uc5d0 \uc6d0\ud65c\ud558\uac8c \uc5f0\uacb0\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uba54\ubaa8\ub9ac \ubc0f \uc2a4\ud1a0\ub9ac\uc9c0 \uc9c0\uc6d0<\/strong>: \ud6a8\uc728\uc801\uc778 \ucee8\ud14d\uc2a4\ud2b8 \uad00\ub9ac\uc640 \ud568\uaed8 \uc5d0\uc774\uc804\ud2b8 \uba54\ubaa8\ub9ac\uc640 RAG(Retrieval-Augmented Generation) \uc6cc\ud06c\ud50c\ub85c\ub97c \uae30\ubcf8\uc801\uc73c\ub85c \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ub0b4\uacb0\ud568\uc131<\/strong>: \uc7ac\uc2dc\ub3c4, \uac80\uc0ac\uc810 \uc2e4\ud589, \ubcf5\uad6c \uba54\ucee4\ub2c8\uc998 \ubc0f \uc0c1\ud0dc \uc9c0\uc18d\uc131\uc774 \uae30\ubcf8 \uc81c\uacf5\ub418\uc5b4 \uc548\uc815\uc801\uc778 \uc2e4\ud589\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uad00\ucc30 \uac00\ub2a5\uc131<\/strong>: \uc804\uccb4 \uc5d0\uc774\uc804\ud2b8 \uc774\ubca4\ud2b8 \ucc98\ub9ac, \ub85c\uae45\uc744 \uc81c\uacf5\ud558\uba70, Langfuse \ubc0f W&amp;B Weave\uc640\uc758 \uae30\ubcf8 \ud1b5\ud569\uc744 \ud1b5\ud574 OpenTelemetry\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>\uac04\ub2e8\ud788 \ub9d0\ud574\uc11c, Koog\ub294 AI \uc5d0\uc774\uc804\ud2b8\ub97c \uc548\uc815\uc801\uc73c\ub85c \uad6c\ucd95\ud558\uae30\uc5d0 \ub9e4\uc6b0 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\">Koog\ub97c A2A\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud558\ub294 \uc774\uc720<\/h2>\n<p>Koog\uc640 A2A\ub294 AI \uc5d0\uc774\uc804\ud2b8 \uc2a4\ud0dd\uc758 \uc11c\ub85c \ub2e4\ub978 \uacc4\uce35\uc744 \ucc98\ub9ac\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ud568\uaed8 \uc0ac\uc6a9\ud588\uc744 \ub54c \uc11c\ub85c\ub97c \ubcf4\uc644\ud558\uace0 \ube48\ud2c8\uc744 \ucc44\uc6c1\ub2c8\ub2e4.<\/p>\n<p>Koog\ub294 \uc2e4\uc81c \uc5d4\ud130\ud504\ub77c\uc774\uc988 \uc0ac\uc6a9\uc5d0 \ud544\uc694\ud55c AI \uc624\ucf00\uc2a4\ud2b8\ub808\uc774\uc158\uc5d0\uc11c <strong>\uac00\uc7a5 \uc5b4\ub824\uc6b4 \ubd80\ubd84\uc744 \ud574\uacb0<\/strong>\ud569\ub2c8\ub2e4.<\/p>\n<p><strong>A2A\uac00 \ucc44\uc6cc\uc8fc\ub294 \ubd80\uc871\ud55c \ubd80\ubd84: <\/strong>Koog \uc5d0\uc774\uc804\ud2b8\uac00 \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uc758 \ub2e4\ub978 A2A \ud638\ud658 \uc5d0\uc774\uc804\ud2b8\uc640 \uc18c\ud1b5\ud560 \uc218 \uc788\uac8c \ud574\uc90d\ub2c8\ub2e4. \uac01 \uc678\ubd80 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud574 \ub9de\ucda4\ud654\ub41c \ud1b5\ud569\uc744 \uad6c\ucd95\ud558\ub294 \ub300\uc2e0 Koog AI \uc6cc\ud06c\ud50c\ub85c\ub294 \ub2e4\ub978 \uc5d0\uc774\uc804\ud2b8\ub97c \uc790\ub3d9\uc73c\ub85c \ucc3e\uc544 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>\uacb0\uacfc\ub294 \uc644\ubcbd\ud55c \uacb0\ud569<\/strong>: Koog\uc758 \uace0\uae09 \uc6cc\ud06c\ud50c\ub85c\ub294 \ubaa8\ub4e0 \uc5d0\uc774\uc804\ud2b8\uac00 \uc694\uccad\ud560 \uc218 \uc788\ub294 A2A \uc791\uc5c5\uc774 \ub418\uace0, Koog \uc5d0\uc774\uc804\ud2b8\ub294 A2A \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uc744 \uc644\ubcbd\ud558\uac8c \ud65c\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c Koog\ub294 \ubc31\uc5d4\ub4dc, \uae30\uae30 \ub0b4 \ubc0f \ube0c\ub77c\uc6b0\uc800 \ub0b4 \ud658\uacbd\uc5d0\uc11c \uc2e4\ud589\ub418\ubbc0\ub85c \uc11c\ub85c \uc5f0\uacb0\ub41c AI\ub97c \uc774\uc804\ubcf4\ub2e4 \ub354 \ud3ed\ub113\uace0 \ud6a8\uacfc\uc801\uc73c\ub85c \uc804\ub2ec\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774\uac83\uc774 \uc5b4\ub5bb\uac8c \uac00\ub2a5\ud560\uae4c\uc694? \ud568\uaed8 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4!<\/p>\n<h2 class=\"wp-block-heading\">A2A \ud504\ub85c\ud1a0\ucf5c<\/h2>\n<p>A2A \ud504\ub85c\ud1a0\ucf5c\uc740 \uc5d0\uc774\uc804\ud2b8 \uac04 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158\uc758 \ud544\uc218 \uad6c\uc131 \uc694\uc18c\ub97c \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n<ul>\n<li>\ud45c\uc900\ud654\ub41c \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc(\uae30\ub2a5\uc744 \uc124\uba85\ud558\ub294 JSON \ubb38\uc11c)\ub97c \ud1b5\ud55c <strong>\uc5d0\uc774\uc804\ud2b8 \uac80\uc0c9<\/strong><\/li>\n<li>\uc77c\uad00\ub41c \uc2a4\ud0a4\ub9c8\ub97c \uac00\uc9c4 \uc694\uccad \ubc0f \uc751\ub2f5 <strong>\uba54\uc2dc\uc9c0 \ud615\uc2dd<\/strong><\/li>\n<li>\uc81c\ucd9c \u2192 \uc791\uc5c5 \u2192 \uc644\ub8cc\/\uc2e4\ud328\uc758 \uba85\ud655\ud55c \uc0c1\ud0dc\ub97c \ud1b5\ud55c <strong>\uc791\uc5c5 \uc218\uba85 \uc8fc\uae30<\/strong> \uad00\ub9ac<\/li>\n<li>JSON-RPC, gRPC, REST \ub4f1\uc758 <strong>\uc804\uc1a1 \uacc4\uce35<\/strong><\/li>\n<li>\ud45c\uc900 OAuth2, API \ud0a4 \ubc0f JWT \ud1a0\ud070\uc744 \uc774\uc6a9\ud55c <strong>\ubcf4\uc548 \uccb4\uacc4<\/strong><\/li>\n<li>\ud45c\uc900\ud654\ub41c \uc624\ub958 \ucf54\ub4dc\ub97c \uc774\uc6a9\ud55c <strong>\uc624\ub958 \ucc98\ub9ac<\/strong><\/li>\n<\/ul>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-645498\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/09\/image-50.png\" alt=\"\" width=\"1008\" height=\"752\" \/><\/figure>\n<h3 class=\"wp-block-heading\">\uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc: \ub514\uc9c0\ud138 \uba85\ud568<\/h3>\n<p>A2A \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uc758 \ubaa8\ub4e0 \uc5d0\uc774\uc804\ud2b8\ub294 &#8216;\uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc&#8217;\ub85c \uc790\uc2e0\uc758 \uae30\ub2a5\uc744 \uac8c\uc2dc\ud569\ub2c8\ub2e4. \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\ub294 \uc5d0\uc774\uc804\ud2b8 \ub3c4\uba54\uc778\uc758 \uc77c\ubd80 URL(\uc608: <em>\/.well-known\/agent-card.json<\/em>)\uc5d0\uc11c \ud638\uc2a4\ud305\ub418\ub294 \ud45c\uc900\ud654\ub41c JSON \ud30c\uc77c\uc785\ub2c8\ub2e4. \ub514\uc9c0\ud138 \uba85\ud568 \uc5ed\ud560\uc744 \ud558\ub294 \uc774 \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\ub97c \ud1b5\ud574 \ub2e4\ub978 \uc5d0\uc774\uc804\ud2b8\uac00 \ud574\ub2f9 \uc5d0\uc774\uc804\ud2b8\uc758 \uc5ed\ud560\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub2e4\uc74c\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\uae30\ubcf8 \uc815\ubcf4<\/strong>: \uc5d0\uc774\uc804\ud2b8 \uc774\ub984, \uc124\uba85, \ubc84\uc804 \ub4f1<\/li>\n<li><strong>\ub2a5\ub825<\/strong>: \uc5d0\uc774\uc804\ud2b8\uac00 \uc81c\uacf5\ud560 \uc218 \uc788\ub294 \uc11c\ube44\uc2a4(\uc608: \ubb38\uc11c \ucd08\uc548 \uc791\uc131, \ud14d\uc2a4\ud2b8 \uad50\uc815, \ub370\uc774\ud130 \ubd84\uc11d, \uc774\ubbf8\uc9c0 \uc0dd\uc131)<\/li>\n<li><strong>\uc5d4\ub4dc\ud3ec\uc778\ud2b8<\/strong>: \uc5d0\uc774\uc804\ud2b8\uc5d0 \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95\u00a0<\/li>\n<li><strong>\uae30\ud0c0 \uc120\ud0dd\uc801 \uc815\ubcf4: <\/strong>\uc0ac\uc6a9 \uac00\ub2a5\ud55c \uae30\ub2a5, \uc778\uc99d \ub4f1<\/li>\n<\/ul>\n<p>\uc774\ub7ec\ud55c \uac80\uc0c9 \uba54\ucee4\ub2c8\uc998\uc774 \uc788\uc73c\ubbc0\ub85c \uc9c1\uc811 \ud1b5\ud569\ud558\ub294 \uc791\uc5c5\uc774 \ud544\uc694\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc5b4\ub5a4 \ud2b9\uc815\ud55c \uc2a4\ud0ac\uc774 \ud544\uc694\ud55c \uacbd\uc6b0, \uc5d0\uc774\uc804\ud2b8\ub294 \uac04\ub2e8\ud788 \uad00\ub828\uc774 \uc788\ub294 \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\ub97c \ucc3e\uc544 \uc774 \uc11c\ube44\uc2a4\uc640 \uc0c1\ud638 \uc791\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \ud30c\uc545\ud569\ub2c8\ub2e4.<\/p>\n<p>Koog\uc5d0\uc11c \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\ub294 Kotlin \ub370\uc774\ud130 \ud074\ub798\uc2a4\ub97c \uc774\uc6a9\ud574 \uc815\uc758\ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val agentCard = AgentCard(\n    name = \"Blog Writer\",\n    description = \"AI agent that creates high-quality blog posts and articles\",\n    url = \"https:\/\/api.blog-writer.com\/a2a\/v1\",\n    version = \"1.0.0\",\n    capabilities = AgentCapabilities(streaming = true),\n    defaultInputModes = listOf(\"text\/plain\"),\n    defaultOutputModes = listOf(\"text\/markdown\"),\n    skills = listOf(\n        AgentSkill(\n            id = \"write-post\",\n            name = \"Blog Post Writing\",\n            description = \"Generate engaging blog posts on any topic\",\n            tags = listOf(\"writing\", \"content\", \"blog\"),\n            examples = listOf(\"Write a post about AI trends\")\n        )\n    )\n)<\/pre>\n<h3 class=\"wp-block-heading\">\ubc94\uc6a9 \uba54\uc2dc\uc9d5: \ud558\ub098\uc758 \uac04\ub2e8\ud55c \ud328\ud134<\/h3>\n<p>A2A\ub294 \uc5d0\uc774\uc804\ud2b8\uc640\uc758 \ubaa8\ub4e0 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158\uc5d0 \ud558\ub098\uc758 \ud45c\uc900\ud654\ub41c \uba54\uc2dc\uc9c0 \ud615\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub2e8\uc21c\uc131\uc740 \ub9e4\uc6b0 \uac15\ub825\ud55c\ub370, \uc5d0\uc774\uc804\ud2b8\ub294 \uc218\uc2ed \uac1c\uc758 API\ub97c \uc54c \ud544\uc694 \uc5c6\uc774 \ud558\ub098\uc758 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158 \ud328\ud134\ub9cc \uc774\ud574\ud558\uba74 \ub418\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<p>\uac01\uac01\uc758 \uc0c1\ud638 \uc791\uc6a9\uc740 \ub3d9\uc77c\ud55c \ud750\ub984\uc744 \ub530\ub985\ub2c8\ub2e4.<\/p>\n<ol>\n<li>\uc791\uc5c5 \uc694\uccad\uacfc \ub9e4\uac1c\ubcc0\uc218\ub97c \ud3ec\ud568\ud55c <strong>\uba54\uc2dc\uc9c0 \ubcf4\ub0b4\uae30<\/strong><\/li>\n<li>\uc989\uac01\uc801\uc778 \uacb0\uacfc \ub610\ub294 \ucd94\uc801\ud560 \uc218 \uc788\ub294 \uc791\uc5c5 <strong>\uc218\uc2e0<\/strong><\/li>\n<li>\uae34 \uc791\uc5c5\uc758 \uacbd\uc6b0 \uc2e4\uc2dc\uac04 \ucc44\ub110\uc744 \ud1b5\ud574 <strong>\uc5c5\ub370\uc774\ud2b8 \uc218\uc2e0<\/strong><\/li>\n<\/ol>\n<p>\uc774\ub7ec\ud55c \ubc94\uc6a9\uc801 \uc811\uadfc \ubc29\uc2dd\uc744 \ub530\ub974\uba74 \uc0c8\ub85c\uc6b4 \uc5d0\uc774\uc804\ud2b8 \uae30\ub2a5\uc744 \ucd94\uac00\ud574\ub3c4 \ucee4\ubba4\ub2c8\ucf00\uc774\uc158 \ud504\ub85c\ud1a0\ucf5c\uc744 \ubcc0\uacbd\ud560 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \uc5d0\uc774\uc804\ud2b8\uc5d0\uac8c \ud14d\uc2a4\ud2b8\ub97c \uc694\uc57d\ud558\uac70\ub098 \ubcf5\uc7a1\ud55c \ubcf4\uace0\uc11c\ub97c \uc0dd\uc131\ud558\ub3c4\ub85d \uc694\uccad\ud558\ub294 \ubaa8\ub4e0 \uacbd\uc6b0\uc5d0 \uba54\uc2dc\uc9c0 \uad6c\uc870\ub294 \uc77c\uad00\ub418\uac8c \uc720\uc9c0\ub429\ub2c8\ub2e4.<\/p>\n<p>Koog\uc5d0\uc11c\ub294 \uc774\ubbf8 \uad6c\ud604\ub41c \uac1d\uccb4\uc640 \ud504\ub85c\ud1a0\ucf5c\uc744 \uc774\uc6a9\ud558\ubbc0\ub85c \uba54\uc2dc\uc9c0\ub97c \uc0dd\uc131\ud558\uace0 \ubcf4\ub0b4\ub294 \uacfc\uc815\uc774 \ub2e8\uc21c\ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val message = Message(\n    role = Role.User,\n    parts = listOf(\n        TextPart(\"Write a blog post about the future of AI agents\")\n    ),\n    contextId = \"blog-project-456\"\n)\n\nval request = Request(\n    data = MessageSendParams(\n        message = message,\n        configuration = MessageConfiguration(\n            blocking = false, \/\/ \uccab \ubc88\uc9f8 \uc751\ub2f5 \uac00\uc838\uc624\uae30\n            historyLength = 5 \/\/ \ucee8\ud14d\uc2a4\ud2b8 \ud3ec\ud568\n        )\n    )\n)\n\nval response = client.sendMessage(request)<\/pre>\n<p>\ub2e4\uc591\ud55c <em>Part<\/em> \ud0c0\uc785\uc744 \ud1b5\ud574 \uba54\uc2dc\uc9c0 \ud615\uc2dd\uc5d0 \ud48d\ubd80\ud55c \ucf58\ud150\uce20\uac00 \uc9c0\uc6d0\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc77c\ubc18 \ud14d\uc2a4\ud2b8\uc758 \uacbd\uc6b0 TextPart, \ucca8\ubd80 \ud30c\uc77c\uc758 \uacbd\uc6b0 FilePart, \uad6c\uc870\ud654\ub41c JSON \ub370\uc774\ud130\uc758 \uacbd\uc6b0 DataPart\uac00 \uc774\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<p>\uc774 \ud1b5\ud569\uc801 \uad6c\uc870\uc5d0 \uae30\ubc18\ud558\uc5ec Koog \uc5d0\uc774\uc804\ud2b8\ub294 \ud14d\uc2a4\ud2b8 \ucc98\ub9ac, \ud30c\uc77c \ubd84\uc11d \ub610\ub294 \ubcf5\uc7a1\ud55c \ub370\uc774\ud130 \ubcc0\ud658 \ub4f1 \ubaa8\ub4e0 \uc791\uc5c5\uc5d0\uc11c A2A \ud638\ud658 \uc5d0\uc774\uc804\ud2b8\uc640 \uc6d0\ud65c\ud558\uac8c \uc18c\ud1b5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 class=\"wp-block-heading\">\uc791\uc5c5 \uc218\uba85 \uc8fc\uae30: \uc2a4\ub9c8\ud2b8 \uc6cc\ud06c\ud50c\ub85c<\/h3>\n<p>A2A\ub294 \ubcf5\uc7a1\ub3c4\uc640 \uc9c0\uc18d \uae30\uac04\uc5d0 \ub530\ub77c \ub2e4\uc591\ud55c \uc720\ud615\uc758 \uc791\uc5c5\uc744 \uc9c0\ub2a5\uc801\uc73c\ub85c \uad00\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n<p><strong>\uc989\uac01\uc801\uc778 \uba54\uc2dc\uc9c0<\/strong>: \ud14d\uc2a4\ud2b8 \uc11c\uc2dd \uc9c0\uc815\uc774\ub098 \ube60\ub978 \uacc4\uc0b0\uacfc \uac19\uc740 \ub2e8\uc21c\ud55c \uc791\uc5c5\uc758 \uacbd\uc6b0, AI \uc751\ub2f5\uc5d0 \ubc14\ub85c \uacb0\uacfc\uac00 \ubc18\ud658\ub429\ub2c8\ub2e4. \uae30\ub2e4\ub9ac\uac70\ub098 \ucd94\uc801\ud560 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<p><strong>\uc7a5\uae30 \uc2e4\ud589 \uc791\uc5c5<\/strong>: \ubb38\uc11c \ubd84\uc11d\uc774\ub098 \ub2e4\ub2e8\uacc4 \uc6cc\ud06c\ud50c\ub85c\uc640 \uac19\uc774 \ubcf5\uc7a1\ud55c \uc791\uc5c5\uc740 \uc77c\uc815 \uacc4\ud68d\uc5d0 \ub530\ub77c \uacb0\uacfc\uac00 \ubc18\ud658\ub429\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \uc694\uccad\ud55c \uc5d0\uc774\uc804\ud2b8\uac00 \uc9c4\ud589 \uc0c1\ud669\uc744 \ubaa8\ub2c8\ud130\ub9c1\ud558\uace0 \uc791\uc5c5 \uacb0\uacfc\uac00 \uc900\ube44\ub418\uba74 \uac00\uc838\uc635\ub2c8\ub2e4.<\/p>\n<p><strong>\uc2e4\uc2dc\uac04 \uc5c5\ub370\uc774\ud2b8<\/strong>: \uc2dc\uac04\uc774 \ub9ce\uc774 \uc18c\uc694\ub418\ub294 \uc791\uc5c5\uc758 \uacbd\uc6b0, Server-Sent Events(SSE)\uac00 \uc2e4\uc2dc\uac04\uc73c\ub85c \uc9c4\ud589 \uc0c1\ud669\uc744 \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uacc4\uc18d\ud574\uc11c \ud3f4\ub9c1\ud558\uc9c0 \uc54a\uc544\ub3c4 \uc5d0\uc774\uc804\ud2b8\uac00 \uc815\ubcf4\ub97c \uc9c0\uc18d\uc801\uc73c\ub85c \uc218\uc2e0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class BlogWriterExecutor : AgentExecutor {\n    override suspend fun execute(\n        context: RequestContext,\n        eventProcessor: SessionEventProcessor\n    ) {\n        val task = Task(\n            contextId = context.contextId,\n            status = TaskStatus(\n                state = TaskState.Submitted,\n                message = Message(\n                    role = Role.Agent,\n                    parts = listOf(TextPart(\"Blog writing request received\")),\n                    contextId = context.contextId,\n    \t\t\ttaskId = context.taskId,\n                )\n            )\n        )\n\n        eventProcessor.sendTaskEvent(task)\n\t ...\n    }\n}\n<\/pre>\n<h3 class=\"wp-block-heading\">\ubcf4\uc548 \uae30\ub2a5 \ub0b4\uc7a5: \uc5c5\uacc4 \ud45c\uc900\ub9cc \uc774\uc6a9<\/h3>\n<p>A2A\ub294 \ubcf4\uc548\uc744 \uc790\uccb4\uc801\uc73c\ub85c \ub9cc\ub4e4\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub300\uc2e0 OAuth2, API \ud0a4, \ud45c\uc900 HTTPS \ub4f1 \ub110\ub9ac \uc218\uc6a9\ub418\uace0 \uc785\uc99d\ub41c \ud45c\uc900\uc744 \uc774\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub530\ub77c\uc11c \uac1c\ubc1c\uc790\ub294 \uc0c8\ub85c\uc6b4 \uc778\uc99d \uccb4\uacc4\uc5d0 \ub300\ud574 \uc2e0\uacbd \uc4f8 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \ud604\ub300\uc801 \uc6f9 API \ubcf4\uc548\uc744 \uc54c\uace0 \uc788\ub2e4\uba74 A2A \ubcf4\uc548\ub3c4 \uc54c\uace0 \uc788\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\uc874 \ud45c\uc900\uc774 \uc81c\uacf5\ud558\ub294 \ubaa8\ub4e0 \ub3c4\uad6c, \ubaa8\ubc94 \uc0ac\ub840 \ubc0f \ubcf4\uc548 \uac10\uc0ac\uac00 \uc2dc\uc2a4\ud15c\uc5d0 \uadf8\ub300\ub85c \uc801\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"json\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\"securitySchemes\": {\n   \"google\": {\n       \"openIdConnectUrl\": \"https:\/\/accounts.google.com\/.well-known\/openid-configuration\",\n       \"type\": \"openIdConnect\"\n   }\n}\n<\/pre>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class AuthorizedA2AServer(\n    agentExecutor: AgentExecutor,\n    agentCard: AgentCard,\n    agentCardExtended: AgentCard? = null,\n    taskStorage: TaskStorage = InMemoryTaskStorage(),\n    messageStorage: MessageStorage = InMemoryMessageStorage(),\n    private val authService: AuthService, \/\/ \uc778\uc99d\uc744 \ub2f4\ub2f9\ud558\ub294 \uc11c\ube44\uc2a4\n) : A2AServer(\n    agentExecutor = agentExecutor,\n    agentCard = agentCard,\n    agentCardExtended = agentCardExtended,\n    taskStorage = taskStorage,\n    messageStorage = messageStorage,\n) {\n\n    private suspend fun authenticateAndAuthorize(\n        ctx: ServerCallContext,\n        requiredPermission: String\n    ): AuthenticatedUser {\n        val token = ctx.headers[\"Authorization\"]?.firstOrNull()\n            ?: throw A2AInvalidParamsException(\"Missing Authorization token\")\n\n        val user = authService.authenticate(token)\n            ?: throw A2AInvalidParamsException(\"Invalid Authorization token\")\n\n        if (requiredPermission !in user.permissions) {\n            throw A2AUnsupportedOperationException(\"Insufficient permissions\")\n        }\n\n        return user\n    }\n\n   override suspend fun onSendMessage(\n        request: Request,\n        ctx: ServerCallContext\n    ): Response {\n        val user = authenticateAndAuthorize(ctx, requiredPermission = \"send_message\")\n\n        \/\/ \ucee8\ud14d\uc2a4\ud2b8 \uc0c1\ud0dc\ub97c \ud1b5\ud574 \uc5d0\uc774\uc804\ud2b8 \uc2e4\ud589\uc790\uc5d0\uac8c \uc0ac\uc6a9\uc790 \ub370\uc774\ud130 \uc804\ub2ec\n        val enrichedCtx = ctx.copy(\n            state = ctx.state + (AuthStateKeys.USER to user)\n        )\n\n        \/\/ \ud48d\ubd80\ud55c \ucee8\ud14d\uc2a4\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0c1\uc704 \uad6c\ud604\uc5d0 \uc704\uc784\n        return super.onSendMessage(request, enrichedCtx)\n    }\n\n   \/\/ \ub098\uba38\uc9c0 \ub798\ud551\ub41c A2A \uba54\uc11c\ub4dc \n   \/\/ ...\n}<\/pre>\n<h2 class=\"wp-block-heading\">Koog \uc5d0\uc774\uc804\ud2b8\ub97c A2A\uc640 \ud1b5\ud569\ud558\ub294 \ubc29\ubc95<\/h2>\n<p>Koog \ud504\ub808\uc784\uc6cc\ud06c\uc5d0\ub294 A2A \ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \uc11c\ubc84\uac00 \uae30\ubcf8\uc801\uc73c\ub85c \ub0b4\uc7a5\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc989, Koog \uc5d0\uc774\uc804\ud2b8\ub294 \ub2e4\ub978 A2A \uc9c0\uc6d0 \uc5d0\uc774\uc804\ud2b8\uc640 \uc6d0\ud65c\ud558\uac8c \uc18c\ud1b5\ud558\uba74\uc11c \uc678\ubd80\uc5d0\uc11c\ub3c4 \uc790\uc2e0\uc744 \uac80\uc0c9\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4. \uc774\ub97c \uad6c\ud604\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc8fc\ub294 \uac04\ub2e8\ud55c \uc608\ub97c \ub4e4\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h3 class=\"wp-block-heading\">Koog \uc5d0\uc774\uc804\ud2b8\ub97c A2A \uc11c\ubc84\uc5d0 \ub798\ud551\ud558\ub294 \ubc29\ubc95<\/h3>\n<p>\uc6b0\uc120, \uc5d0\uc774\uc804\ud2b8\uc5d0 \ub300\ud55c \uc804\ub7b5\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. Koog\ub294 Koog\uc640 A2A \uc0ac\uc774\uc758 \uc6d0\ud65c\ud55c \ubcc0\ud658\uc744 \uc704\ud55c \ud3b8\ub9ac\ud55c \ubcc0\ud658\uae30(<em>toKoogMessage<\/em>, <em>toA2AMessage<\/em>)\ub97c \uc81c\uacf5\ud558\ubbc0\ub85c \uc9c1\uc811 \uc9c1\ub82c\ud654\ud560 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. <em>nodeA2ASendMessage<\/em>\uc640 \uac19\uc740 \ud2b9\uc218 \ub178\ub4dc\uac00 \uba54\uc2dc\uc9c0 \uad50\ud658 \uacfc\uc815\uc744 \ucc98\ub9ac\ud574 \uc8fc\ubbc0\ub85c \ucee4\ubba4\ub2c8\ucf00\uc774\uc158 \uc6cc\ud06c\ud50c\ub85c\uc758 \uad6c\ud604\uc774 \uac04\ub2e8\ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fun blogpostWritingStrategy() = strategy(\"blogpost-writer-strategy\") {\n    val blogpostRequest by node { input -&gt;\n        val userMessage = input.toKoogMessage().content\n\n        llm.writeSession {\n            user {\n                +\"Write a blogpost based on the user request\"\n                +xml {\n                    tag(\"user_request\") {\n                        +userMessage\n                    }\n                }\n            }\n\n            requestLLM().toA2AMessage()\n        }\n    }\n\n    val sendMessage by nodeA2ARespondMessage()\n\n    nodeStart then blogpostRequest then sendMessage the nodeFinish\n}<\/pre>\n<p>\ub450 \ubc88\uc9f8, \uc5d0\uc774\uc804\ud2b8 \uc790\uccb4\ub97c \uc815\uc758\ud569\ub2c8\ub2e4. <em>A2AServer<\/em> \uae30\ub2a5\uc744 \uc124\uce58\ud558\uba74 \uc5d0\ucf54\uc2dc\uc2a4\ud15c\uc758 \ub2e4\ub978 \uc5d0\uc774\uc804\ud2b8\uac00 \ud574\ub2f9 \uc5d0\uc774\uc804\ud2b8\ub97c \uac80\uc0c9\ud558\uace0 \uc561\uc138\uc2a4\ud560 \uc218 \uc788\uac8c \ub418\uc5b4 \ub2e4\uc218\uc758 \ud2b9\uc218 \uc5d0\uc774\uc804\ud2b8\uac00 \uc6d0\ud65c\ud558\uac8c \ud611\ub825\ud558\ub294 \uc815\uad50\ud55c \ub124\ud2b8\uc6cc\ud06c\uac00 \ud615\uc131\ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">fun createBlogpostWritingAgent(\n    requestContext: RequestContext,\n    eventProcessor: SessionEventProcessor\n): AIAgent {\n     \/\/ \ud604\uc7ac \ub300\ud654 \ucee8\ud14d\uc2a4\ud2b8\uc5d0 \ub300\ud55c \uae30\uc874 \uba54\uc2dc\uc9c0 \uac00\uc838\uc624\uae30\n     val messageHistory = requestContext.messageStorage.getAll().map { it.toKoogMessage() }\n\n     val agentConfig = AIAgentConfig(\n        prompt = prompt(\"blogpost\") {\n            system(\"You are a blogpost writing agent\")\n\n            messages(messageHistory)\n        },\n        model = GoogleModels.Gemini2_5Flash,\n        maxAgentIterations = 5\n    )\n\n    return agent = AIAgent(\n        promptExecutor = MultiLLMPromptExecutor(\n            LLMProvider.Google to GoogleLLMClient(System.getenv(\"GOOGLE_API_KEY\")),\n        ),\n        strategy = blogpostWritingStrategy(),\n        agentConfig = agentConfig\n    ) {\n        install(A2AAgentServer) {\n            this.context = requestContext\n            this.eventProcessor = eventProcessor\n        }\n\n        handleEvents {\n            onAgentFinished { ctx -&gt;\n                \/\/ \uc5d0\uc774\uc804\ud2b8\uc758 \uc751\ub2f5\uc73c\ub85c \ud604\uc7ac \ub300\ud654 \ucee8\ud14d\uc2a4\ud2b8 \uc5c5\ub370\uc774\ud2b8\n                val resultMessge = ctx.result as A2AMessage\n                requestContext.messageStorage.save(resultMessge)\n            }\n        }\n    }\n}<\/pre>\n<p>\uc138 \ubc88\uc9f8, \uc5d0\uc774\uc804\ud2b8\ub97c \uc2e4\ud589\uc790\uc5d0 \ub798\ud551\ud55c \ub2e4\uc74c \uc11c\ubc84\ub97c \uc815\uc758\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class BlogpostAgentExecutor : AgentExecutor {\n    override suspend fun execute(\n        context: RequestContext,\n        eventProcessor: SessionEventProcessor\n    ) {\n        createBlogpostWritingAgent(context, eventProcessor)\n            .run(context.params.message)\n    }\n}\n\nval a2aServer = A2AServer(\n    agentExecutor = BlogpostAgentExecutor(),\n    agentCard = agentCard,\n)<\/pre>\n<p>\ub9c8\uc9c0\ub9c9\uc73c\ub85c, \uc11c\ubc84 \uc804\uc1a1\uc744 \uc815\uc758\ud558\uace0 \uc11c\ubc84\ub97c \uc2e4\ud589\ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val transport = HttpJSONRPCServerTransport(\n    requestHandler = a2aServer\n)\n\ntransport.start(\n    engineFactory = Netty,\n    port = 8080,\n    path = \"\/a2a\",\n    wait = true,\n    agentCard = agentCard,\n    agentCardPath = A2AConsts.AGENT_CARD_WELL_KNOWN_PATH\n)<\/pre>\n<p>\uc774\uc81c \uc5d0\uc774\uc804\ud2b8\uac00 \uc694\uccad\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4!\u00a0<\/p>\n<h3 class=\"wp-block-heading\">Koog \uc5d0\uc774\uc804\ud2b8\uc5d0\uc11c \ub2e4\ub978 A2A \uc9c0\uc6d0 \uc5d0\uc774\uc804\ud2b8\ub97c \ud638\ucd9c\ud558\ub294 \ubc29\ubc95<\/h3>\n<p>\uba3c\uc800, A2A \ud074\ub77c\uc774\uc5b8\ud2b8\ub97c \uad6c\uc131\ud558\uace0 \uc774\ub97c \uc5f0\uacb0\ud558\uc5ec \uc5d0\uc774\uc804\ud2b8 \uce74\ub4dc\ub97c \uac00\uc838\uc640\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val agentUrl = \"https:\/\/example.com\"\n\nval cardResolver = UrlAgentCardResolver(\n    baseUrl = agentUrl,\n    path = A2AConsts.AGENT_CARD_WELL_KNOWN_PATH,\n)\n\nval transport = HttpJSONRPCClientTransport(\n    url = agentUrl,\n)\n\nval a2aClient = A2AClient(\n    transport = transport,\n    agentCardResolver = cardResolver\n)\n\n\/\/ \ud074\ub77c\uc774\uc5b8\ud2b8\ub97c \ucd08\uae30\ud654\ud558\uace0 \uce74\ub4dc\ub97c \uac00\uc838\uc635\ub2c8\ub2e4\na2aClient.connect()<\/pre>\n<p>\uadf8\ub7f0 \ub2e4\uc74c, \ud574\ub2f9 \uc804\ub7b5\uc5d0\uc11c <em>nodeA2ASendMessage<\/em> \ub610\ub294 <em>nodeA2ASendMessageStreaming<\/em>\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc774\ub7ec\ud55c \ud074\ub77c\uc774\uc5b8\ud2b8\ub97c \ud638\ucd9c\ud558\uace0 \uba54\uc2dc\uc9c0 \ub610\ub294 \uc791\uc5c5 \uc751\ub2f5\uc744 \uac00\uc838\uc62c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"kotlin\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val agentId = \"agent_id\"\nval agent = AIAgent(\n    promptExecutor = MultiLLMPromptExecutor(\n        LLMProvider.Google to GoogleLLMClient(System.getenv(\"GOOGLE_API_KEY\")),\n    ),\n    strategy = strategy(\"a2a\") {\n        val nodePrepareRequest by node&lt;String, A2AClientRequest&gt; { input -&gt;\n            A2AClientRequest(\n                agentId = agentId,\n                callContext = ClientCallContext.Default,\n                params = MessageSendParams(\n                    message = A2AMessage(\n                        messageId = Uuid.random().toString(),\n                        role = Role.User,\n                        parts = listOf(\n                            TextPart(input)\n                        )\n                    )\n                )\n            )\n        }\n        val nodeA2A by nodeA2AClientSendMessage(agentId)\n        \n        val nodeProcessResponse by node {\n            \/\/ \ud504\ub85c\uc138\uc2a4 \uc774\ubca4\ud2b8\n            when (it) {\n                is A2AMessage -&gt; it.parts\n                    .filterIsInstance()\n                    .joinToString(separator = \"n\") { it.text }\n                \n                is Task -&gt; it.artifacts\n                    .orEmpty()\n                    .flatMap { it.parts }\n                    .filterIsInstance()\n                    .joinToString(separator = \"n\") { it.text }\n            }\n        }\n\n        nodeStart then nodePrepareRequest then nodeA2A then nodeProcessResponse then nodeFinish\n\n    },\n    agentConfig = agentConfig\n) {\n   install(A2AAgentClient) {\n        this.a2aClients = mapOf(agentId to client)\n    }\n}\n\nagent.run(\"Write blog post about A2A and Koog integration\")<\/pre>\n<h2 class=\"wp-block-heading\">\ub2e4\uc74c \ub2e8\uacc4<\/h2>\n<p>Koog\uc640 A2A\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\ub824\uba74 \ub2e4\uc74c \uc720\uc6a9\ud55c \uc790\ub8cc\ub97c \uc0b4\ud3b4\ubcf4\uc138\uc694.<\/p>\n<p><a href=\"https:\/\/docs.koog.ai\/\" target=\"_blank\" rel=\"noopener\">Koog \ubb38\uc11c<\/a><\/p>\n<p><a href=\"https:\/\/a2a-protocol.org\/latest\/specification\/\" target=\"_blank\" rel=\"noopener\">A2A \uc0ac\uc591<\/a><\/p>\n<p><a href=\"https:\/\/github.com\/JetBrains\/koog\/tree\/develop\/examples\/simple-examples\/src\/main\/kotlin\/ai\/koog\/agents\/example\/a2a\" target=\"_blank\" rel=\"noopener\" data-type=\"link\" data-id=\"https:\/\/github.com\/JetBrains\/koog\/tree\/develop\/examples\/simple-examples\/src\/main\/kotlin\/ai\/koog\/agents\/example\/a2a\">Koog A2A \uc608\uc2dc<\/a><\/p>\n\n\n<p><\/p>\n\n\n\n<p><em>\uac8c\uc2dc\ubb3c \uc6d0\ubb38 \uc791\uc131\uc790<\/em><\/p>\n\n\n    <div class=\"about-author \">\n        <div class=\"about-author__box\">\n            <div class=\"row\">\n                <div class=\"about-author__box-img\">\n                    <img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/10\/T0288D531-UL11E3JG5-1870329d7bae-512.png\" width=\"200\" height=\"200\" alt=\"Andrey Bragin\" loading=\"lazy\"  class=\"avatar avatar-200 wp-user-avatar wp-user-avatar-200 photo avatar-default\">\n                <\/div>\n                <div class=\"about-author__box-text\">\n                                            <h4>Andrey Bragin<\/h4>\n                                                        <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n","protected":false},"author":1191,"featured_media":651534,"comment_status":"closed","ping_status":"closed","template":"","categories":[89,907],"tags":[6847,8724],"cross-post-tag":[6355],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/ai\/651630"}],"collection":[{"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/ai"}],"about":[{"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/types\/ai"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/users\/1191"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/comments?post=651630"}],"version-history":[{"count":2,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/ai\/651630\/revisions"}],"predecessor-version":[{"id":651634,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/ai\/651630\/revisions\/651634"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/media\/651534"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/media?parent=651630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/categories?post=651630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/tags?post=651630"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ko\/wp-json\/wp\/v2\/cross-post-tag?post=651630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}