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feat(ai): add headers option to StreamOptions for custom HTTP headers

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- Added headers field to base StreamOptions interface
- Updated all providers to merge options.headers with defaults
- Forward headers and onPayload through streamSimple/completeSimple
- Bedrock not supported (uses AWS SDK auth)
This commit is contained in:
Mario Zechner
2026-01-20 01:08:24 +01:00
parent 20c7b5fed4
commit d2be6486a4
10 changed files with 96 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
packages/ai/src/providers/anthropic.ts
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@@ -126,6 +126,16 @@ export interface AnthropicOptions extends StreamOptions {
toolChoice?: "auto" | "any" | "none" | { type: "tool"; name: string };
}
function mergeHeaders(...headerSources: (Record<string, string> | undefined)[]): Record<string, string> {
const merged: Record<string, string> = {};
for (const headers of headerSources) {
if (headers) {
Object.assign(merged, headers);
}
}
return merged;
}
export const streamAnthropic: StreamFunction<"anthropic-messages"> = (
model: Model<"anthropic-messages">,
context: Context,
@@ -154,7 +164,12 @@ export const streamAnthropic: StreamFunction<"anthropic-messages"> = (
try {
const apiKey = options?.apiKey ?? getEnvApiKey(model.provider) ?? "";
const { client, isOAuthToken } = createClient(model, apiKey, options?.interleavedThinking ?? true);
const { client, isOAuthToken } = createClient(
model,
apiKey,
options?.interleavedThinking ?? true,
options?.headers,
);
const params = buildParams(model, context, isOAuthToken, options);
options?.onPayload?.(params);
const anthropicStream = client.messages.stream({ ...params, stream: true }, { signal: options?.signal });
@@ -328,6 +343,7 @@ function createClient(
model: Model<"anthropic-messages">,
apiKey: string,
interleavedThinking: boolean,
optionsHeaders?: Record<string, string>,
): { client: Anthropic; isOAuthToken: boolean } {
const betaFeatures = ["fine-grained-tool-streaming-2025-05-14"];
if (interleavedThinking) {
@@ -337,14 +353,17 @@ function createClient(
const oauthToken = isOAuthToken(apiKey);
if (oauthToken) {
// Stealth mode: Mimic Claude Code's headers exactly
const defaultHeaders = {
accept: "application/json",
"anthropic-dangerous-direct-browser-access": "true",
"anthropic-beta": `claude-code-20250219,oauth-2025-04-20,${betaFeatures.join(",")}`,
"user-agent": `claude-cli/${claudeCodeVersion} (external, cli)`,
"x-app": "cli",
...(model.headers || {}),
};
const defaultHeaders = mergeHeaders(
{
accept: "application/json",
"anthropic-dangerous-direct-browser-access": "true",
"anthropic-beta": `claude-code-20250219,oauth-2025-04-20,${betaFeatures.join(",")}`,
"user-agent": `claude-cli/${claudeCodeVersion} (external, cli)`,
"x-app": "cli",
},
model.headers,
optionsHeaders,
);
const client = new Anthropic({
apiKey: null,
@@ -357,12 +376,15 @@ function createClient(
return { client, isOAuthToken: true };
}
const defaultHeaders = {
accept: "application/json",
"anthropic-dangerous-direct-browser-access": "true",
"anthropic-beta": betaFeatures.join(","),
...(model.headers || {}),
};
const defaultHeaders = mergeHeaders(
{
accept: "application/json",
"anthropic-dangerous-direct-browser-access": "true",
"anthropic-beta": betaFeatures.join(","),
},
model.headers,
optionsHeaders,
);
const client = new Anthropic({
apiKey,