{"id":2954,"date":"2025-12-02T10:51:02","date_gmt":"2025-12-02T01:51:02","guid":{"rendered":"https:\/\/skanto.co.kr\/?p=2954"},"modified":"2025-12-02T10:52:26","modified_gmt":"2025-12-02T01:52:26","slug":"a2a-protocol-specification-structure","status":"publish","type":"post","link":"https:\/\/skanto.co.kr\/?p=2954","title":{"rendered":"A2A Protocol Specification Structure"},"content":{"rendered":"\n<p>The specification is organized into <strong>three distinct layers<\/strong> that work together to provide a complete protocol definition:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"944\" height=\"339\" src=\"https:\/\/skanto.co.kr\/wp-content\/uploads\/2025\/12\/\uc2a4\ud06c\ub9b0\uc0f7-2025-12-02-\uc624\uc804-10.49.33.png\" alt=\"\" class=\"wp-image-2955\"\/><\/figure>\n\n\n\n<p><strong>Layer 1: Canonical Data Model<\/strong>&nbsp;defines the core data structures and message formats that all A2A implementations must understand. These are protocol agnostic definitions expressed as Protocol Buffer messages.<\/p>\n\n\n\n<p><strong>Layer 2: Abstract Operations<\/strong>&nbsp;describes the fundamental capabilities and behaviors that A2A agents must support, independent of how they are exposed over specific protocols.<\/p>\n\n\n\n<p><strong>Layer 3: Protocol Bindings<\/strong>&nbsp;provides concrete mappings of the abstract operations and data structures to specific protocol bindings (JSON-RPC, gRPC, HTTP\/REST), including method names, endpoint patterns, and protocol-specific behaviors.<\/p>\n\n\n\n<p>This layered approach ensures that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Core semantics remain consistent across all protocol bindings<\/li>\n\n\n\n<li>New protocol bindings can be added without changing the fundamental data model<\/li>\n\n\n\n<li>Developers can reason about A2A operations independently of binding concerns<\/li>\n\n\n\n<li>Interoperability is maintained through shared understanding of the canonical data model<\/li>\n<\/ul>\n\n\n\n<p>\ucc38\uace0: <a href=\"https:\/\/a2a-protocol.org\/latest\/specification\/\">Agent2Agent (A2A) Protocol Specification (DRAFT v1.0)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The specification is organized into three distinct layers that work together to provide a complete protocol definition: Layer 1: Canonical Data Model&nbsp;defines the core data structures and message formats that all A2A implementations must understand. These are protocol agnostic definitions expressed as Protocol Buffer messages. Layer 2: Abstract Operations&nbsp;describes the fundamental capabilities and behaviors that A2A agents must support, independent of how they are exposed over specific protocols. Layer 3: Protocol Bindings&nbsp;provides concrete mappings of the abstract operations and data&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/skanto.co.kr\/?p=2954\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[7],"tags":[238],"class_list":["post-2954","post","type-post","status-publish","format-standard","hentry","category-7","tag-a2a"],"_links":{"self":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2954"}],"version-history":[{"count":2,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2954\/revisions"}],"predecessor-version":[{"id":2957,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2954\/revisions\/2957"}],"wp:attachment":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}