feat: add Bedrock Mantle API format support for harness#1412
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Add apiFormat field to harness bedrockModelConfig that allows users to select between converse_stream (default Bedrock), responses, or chat_completions (Bedrock Mantle) when creating a harness. - Schema: add BedrockApiFormatSchema enum and apiFormat field to HarnessModelSchema - API types: add apiFormat to BedrockModelConfig interface - Mapper: include apiFormat in bedrockModelConfig when not converse_stream - TUI: add api-format wizard step for bedrock provider (gated behind isPreviewEnabled) - CDK: add BedrockMantleInference/CallWithBearerToken IAM policies when mantle format selected - CLI: add --api-format flag, default model ID to openai.gpt-oss-120b for mantle formats - Validation: reject apiFormat for non-bedrock providers E2E tested against account 998846730471 in ap-southeast-2.
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Package TarballHow to installgh release download pr-1412-tarball --repo aws/agentcore-cli --pattern "*.tgz" --dir /tmp/pr-tarball
npm install -g /tmp/pr-tarball/aws-agentcore-0.15.0.tgz |
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Claude Security Review: no high-confidence findings. (run) |
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- Schema: accepts/rejects apiFormat for bedrock/non-bedrock providers - Mapper: verifies apiFormat included in bedrockModelConfig, omitted for converse_stream - Validate: tests CLI --api-format flag validation
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Claude Security Review: no high-confidence findings. (run) |
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I have tested this E2E using the tarball |
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Summary
apiFormatfield to harnessbedrockModelConfigallowing users to select betweenconverse_stream(default Bedrock Converse API),responses, orchat_completions(Bedrock Mantle endpoint)responsesorchat_completions, the CLI defaults model ID toopenai.gpt-oss-120band adds Bedrock Mantle IAM permissions to the harness execution roleisPreviewEnabled()since harness is in previewapiFormatlives insidebedrockModelConfigwith snake_case enum valuesChanges
primitives/harness.ts,primitives/index.ts,agentcore-project.tsaws/agentcore-harness.tsharness-mapper.tstypes.ts,useAddHarnessWizard.ts,AddHarnessScreen.tsx,AddHarnessFlow.tsx,useCreateFlow.tsHarnessPrimitive.ts,harness-action.ts,harness-validate.tsAgentCoreHarnessRole.ts(in agentcore-cdk repo)assets/cdk/bin/cdk.tsTest plan
agentcore add harness --api-format responses→ deploy → invoke returns response via Bedrock Mantle (account 998846730471, ap-southeast-2)Notes