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Title: feat!: #697 added tool input arguments validation by ashakirin · Pull Request #873 · modelcontextprotocol/java-sdk · GitHub

Open Graph Title: feat!: #697 added tool input arguments validation by ashakirin · Pull Request #873 · modelcontextprotocol/java-sdk

X Title: feat!: #697 added tool input arguments validation by ashakirin · Pull Request #873 · modelcontextprotocol/java-sdk

Description: The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI - feat!: #697 added tool input arguments validation by ashakirin · Pull Request #873 · modelcontextprotocol/java-sdk

Open Graph Description: Added tool input arguments validation causes Tool Execution Error accordingly SEP-1303. It is breaking change, because tool input validation is activated by default

X Description: Added tool input arguments validation causes Tool Execution Error accordingly SEP-1303. It is breaking change, because tool input validation is activated by default

Opengraph URL: https://github.com/modelcontextprotocol/java-sdk/pull/873

X: @github

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servers MUST validate tool inputshttps://modelcontextprotocol.io/specification/2025-11-25/server/tools#security-considerations
Please reload this pagehttps://github.com/modelcontextprotocol/java-sdk/pull/873
mcp-core/src/main/java/io/modelcontextprotocol/util/ToolInputValidator.javahttps://github.com/modelcontextprotocol/java-sdk/pull/873/files#diff-5782d3b4c13a65d788f118fed495eef243c60747d9930ee82701af788d61fc7a
Please reload this pagehttps://github.com/modelcontextprotocol/java-sdk/pull/873
mcp-test/src/test/java/io/modelcontextprotocol/server/ToolInputValidationIntegrationTests.javahttps://github.com/modelcontextprotocol/java-sdk/pull/873/files#diff-d69eb0abc312f21dcf85090d7486be0d1c8f9b47ca9e2f3229e5e6c7b7efe364
Please reload this pagehttps://github.com/modelcontextprotocol/java-sdk/pull/873
mcp-test/src/test/java/io/modelcontextprotocol/server/ToolInputValidationIntegrationTests.javahttps://github.com/modelcontextprotocol/java-sdk/pull/873/files#diff-d69eb0abc312f21dcf85090d7486be0d1c8f9b47ca9e2f3229e5e6c7b7efe364
Please reload this pagehttps://github.com/modelcontextprotocol/java-sdk/pull/873
mcp-test/src/test/java/io/modelcontextprotocol/server/ToolInputValidationIntegrationTests.javahttps://github.com/modelcontextprotocol/java-sdk/pull/873/files#diff-d69eb0abc312f21dcf85090d7486be0d1c8f9b47ca9e2f3229e5e6c7b7efe364
Please reload this pagehttps://github.com/modelcontextprotocol/java-sdk/pull/873
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Apr 1, 2026https://github.com/modelcontextprotocol/java-sdk/pull/873#event-24116849366
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Apr 3, 2026https://github.com/modelcontextprotocol/java-sdk/pull/873#issuecomment-4184008413
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April 10, 2026 14:38https://github.com/modelcontextprotocol/java-sdk/pull/873#commits-pushed-d092d46
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feat!:https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/d092d46fcdf689795f2db14c17118e665f47efac
modelcontextprotocol#697https://github.com/modelcontextprotocol/java-sdk/issues/697
added tool input arguments validation…https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/d092d46fcdf689795f2db14c17118e665f47efac
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Update mcp-core/src/main/java/io/modelcontextprotocol/util/ToolInputV…https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/2cbdd2f57fa68f4cf7f191449fb46b7da8bcb470
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chore:https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/3b63b8e7382ed4448d3b35d0541b3e9f328dc05c
modelcontextprotocol#697https://github.com/modelcontextprotocol/java-sdk/issues/697
fixed author namehttps://github.com/modelcontextprotocol/java-sdk/pull/873/commits/3b63b8e7382ed4448d3b35d0541b3e9f328dc05c
3b63b8ehttps://github.com/modelcontextprotocol/java-sdk/pull/873/commits/3b63b8e7382ed4448d3b35d0541b3e9f328dc05c
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modelcontextprotocol#697https://github.com/modelcontextprotocol/java-sdk/issues/697
removed system property option to chan…https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/7cde04bb337f34b1de701b5f10f9920a3d539b1c
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adapted to Map input s…https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/c094c0664e79ee8a797591797a1ab001c8ace0a5
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April 10, 2026 12:39https://github.com/modelcontextprotocol/java-sdk/pull/873#event-24380124967
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chore:https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/b9d8ff34bca1207843c3c7d7d12f6cd6ec63e882
modelcontextprotocol#697https://github.com/modelcontextprotocol/java-sdk/issues/697
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b9d8ff3https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/b9d8ff34bca1207843c3c7d7d12f6cd6ec63e882
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Apr 13, 2026https://github.com/modelcontextprotocol/java-sdk/pull/873#event-24442834429
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Make ToolInputValidationIntegrationTests not dependend on abstract classhttps://github.com/modelcontextprotocol/java-sdk/pull/873/commits/d7a685843545fa2d9528b267f01c3c332e4c0a6f
d7a6858https://github.com/modelcontextprotocol/java-sdk/pull/873/commits/d7a685843545fa2d9528b267f01c3c332e4c0a6f
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April 13, 2026 11:36https://github.com/modelcontextprotocol/java-sdk/pull/873#event-24444055027
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Apr 13, 2026https://github.com/modelcontextprotocol/java-sdk/pull/873#event-24451090195
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May 28, 2026 https://github.com/modelcontextprotocol/java-sdk/pull/873#ref-issue-4538176705
Tool input validation returns with misleading error referencing outputSchema #986 https://github.com/modelcontextprotocol/java-sdk/issues/986
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May 29, 2026 https://github.com/modelcontextprotocol/java-sdk/pull/873#ref-pullrequest-4548386929
[mcp-core] Clarify tool input validation error message. Fixes #986 #989 https://github.com/modelcontextprotocol/java-sdk/pull/989
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