feat(middleware): add multimodal media attachments to AgentRuntime contract#411
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alexey-pelykh merged 1 commit intomainfrom Mar 8, 2026
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…ntract (#385) Add MediaAttachment type and extend the runtime contract to support media in both directions: - Inbound: media field on AgentExecuteParams - Outbound: AgentMediaEvent in the event stream, media field on AgentRunResult - Capability declaration: mediaCapabilities on AgentRuntime interface All additions are optional — existing runtimes continue to work unchanged. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
MediaAttachmenttype withmimeType,filePath,base64,sourceUrl, andfileNamefieldsmediafield toAgentExecuteParams(inbound attachments)AgentMediaEventto theAgentEventdiscriminated union (outbound streaming)mediafield toAgentRunResult(outbound final result)mediaCapabilitiestoAgentRuntimeinterface (runtime capability declaration)All additions are optional — existing runtimes and consumers continue to work unchanged.
Closes #385
Test plan
tsc --noEmit— no new errors)oxlint— 0 warnings, 0 errors)oxfmt)AgentEvent.typethat would break🤖 Generated with Claude Code