feat: upgrade default Python runtime to PYTHON_3_13#658
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Add PYTHON_3_14 to the PythonRuntime enum and make it the default across all agent, MCP, and generate workflows. Updates defaults, fallbacks, TUI options, tests, docs, and snapshots. Constraint: PYTHON_3_14 must be added to the Zod enum in schema/constants.ts as all other types derive from it Rejected: Only adding enum without changing default | user requested default upgrade Confidence: high Scope-risk: broad Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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The Bedrock AgentCore service API does not yet accept PYTHON_3_14. CloudFormation validation rejects it at deploy time: "PYTHON_3_14 is not a valid enum value. Supported values: [PYTHON_3_10, PYTHON_3_11, PYTHON_3_12, PYTHON_3_13]" Keep PYTHON_3_14 in the Zod enum for forward-compatibility but revert all defaults and fallbacks back to PYTHON_3_13. Constraint: Service API only supports PYTHON_3_10 through PYTHON_3_13 Rejected: Default to PYTHON_3_14 | service rejects at deploy time Confidence: high Scope-risk: narrow Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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The Bedrock AgentCore API only accepts PYTHON_3_10 through PYTHON_3_13. Remove PYTHON_3_14 entirely to avoid deploy failures for users. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Hweinstock
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Mar 26, 2026
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Summary
PYTHON_3_14to thePythonRuntimeZod enum inschema/constants.tsPYTHON_3_14across all agent, MCP, and generate workflows (3 default constants, 2 fallbacks)Changed files (17)
src/schema/constants.ts— enum definitionsrc/schema/llm-compacted/agentcore.ts,mcp.ts— LLM type mirrorssrc/cli/tui/screens/agent/types.ts,generate/defaults.ts,mcp/types.ts— defaults & UIsrc/cli/primitives/AgentPrimitive.tsx— BYO agent defaultsrc/lib/packaging/index.ts,python.ts— packager fallbackssrc/tui-harness/helpers.ts— test harnesssrc/schema/__tests__/constants.test.ts— schema testssrc/lib/packaging/__tests__/python.test.ts— version extraction testsrc/cli/operations/agent/generate/__tests__/schema-mapper.test.ts— default assertionsrc/assets/agents/AGENTS.md— asset docssrc/assets/__tests__/__snapshots__/assets.snapshot.test.ts.snap— snapshotdocs/configuration.md,docs/container-builds.md— user docsTest plan
npm run test:unit— 2753 passed, 2 pre-existing PTY failures (unrelated)npm run test:update-snapshots— snapshot updatedagentcore createwith--defaultsproduces"runtimeVersion": "PYTHON_3_14"agentcore validatepasses on generated projectRelated
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