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feat: enable Bedrock fallback via LLM gateway #2097

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Merged
charlesvien merged 2 commits into from
May 7, 2026
Merged

feat: enable Bedrock fallback via LLM gateway #2097

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51fee77
feat: enable Bedrock fallback via LLM gateway
joshsny May 7, 2026
a2051d8
refactor: move Bedrock fallback header to agent package
joshsny May 7, 2026
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8 changes: 8 additions & 0 deletions packages/agent/src/adapters/claude/session/options.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,12 @@ function buildMcpServers(
}

function buildEnvironment(): Record<string, string> {
const bedrockFallbackHeader = "x-posthog-use-bedrock-fallback: true";
const existingCustomHeaders = process.env.ANTHROPIC_CUSTOM_HEADERS;
const customHeaders = existingCustomHeaders
? `${existingCustomHeaders}\n${bedrockFallbackHeader}`
: bedrockFallbackHeader;
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return {
...process.env,
ELECTRON_RUN_AS_NODE: "1",
Expand All @@ -110,6 +116,8 @@ function buildEnvironment(): Record<string, string> {
ENABLE_TOOL_SEARCH: "auto:0",
// Enable idle state as end-of-turn signal (required for SDK 0.2.114+)
CLAUDE_CODE_EMIT_SESSION_STATE_EVENTS: "1",
// Route to AWS Bedrock as a fallback when Anthropic returns 5xx
ANTHROPIC_CUSTOM_HEADERS: customHeaders,
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};
}

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