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fix: add StepCode app attribution headers #211

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fix: add StepCode app attribution headers #211

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7 changes: 7 additions & 0 deletions packages/coding-agent/src/core/provider-attribution.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,12 @@ import { APP_NAME } from "../config.ts";

const OPENCODE_HOST = "opencode.ai";

const OPENROUTER_ATTRIBUTION_HEADERS: ProviderHeaders = {
"HTTP-Referer": "https://github.com/stepfun-ai/Step-Code",
"X-OpenRouter-Title": "StepCode",
"X-OpenRouter-Categories": "cli-agent",
};

function matchesHost(baseUrl: string, expectedHost: string): boolean {
try {
return new URL(baseUrl).hostname === expectedHost;
Expand All @@ -29,6 +35,7 @@ export function mergeProviderAttributionHeaders(
...headerSources: Array<ProviderHeaders | undefined>
): ProviderHeaders | undefined {
const merged: ProviderHeaders = {
...OPENROUTER_ATTRIBUTION_HEADERS,
...getSessionHeaders(model, sessionId),
};

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19 changes: 14 additions & 5 deletions packages/coding-agent/test/sdk-openrouter-attribution.test.ts
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Expand Up @@ -132,12 +132,20 @@ describe("createAgentSession provider headers", () => {
}
}

it("does not add provider attribution headers for OpenRouter models", async () => {
it("adds StepCode attribution headers for OpenRouter models without changing the provider", async () => {
const headers = await captureHeaders(createModel("openrouter", "https://openrouter.ai/api/v1"));

expect(headers?.["HTTP-Referer"]).toBeUndefined();
expect(headers?.["X-OpenRouter-Title"]).toBeUndefined();
expect(headers?.["X-OpenRouter-Categories"]).toBeUndefined();
expect(headers?.["HTTP-Referer"]).toBe("https://github.com/stepfun-ai/Step-Code");
expect(headers?.["X-OpenRouter-Title"]).toBe("StepCode");
expect(headers?.["X-OpenRouter-Categories"]).toBe("cli-agent");
});

it("adds StepCode attribution headers for other providers", async () => {
const headers = await captureHeaders(createModel("custom", "https://provider.example/v1"));

expect(headers?.["HTTP-Referer"]).toBe("https://github.com/stepfun-ai/Step-Code");
expect(headers?.["X-OpenRouter-Title"]).toBe("StepCode");
expect(headers?.["X-OpenRouter-Categories"]).toBe("cli-agent");
});

it("does not add provider attribution headers for NVIDIA NIM endpoints", async () => {
Expand All @@ -146,7 +154,7 @@ describe("createAgentSession provider headers", () => {
expect(headers?.["X-BILLING-INVOKE-ORIGIN"]).toBeUndefined();
});

it("passes provider and request headers through", async () => {
it("lets configured OpenRouter attribution override the defaults", async () => {
const headers = await captureHeaders(createModel("openrouter", "https://openrouter.ai/api/v1"), {
providerHeaders: {
"HTTP-Referer": "https://provider.example",
Expand All @@ -157,6 +165,7 @@ describe("createAgentSession provider headers", () => {
});

expect(headers?.["HTTP-Referer"]).toBe("https://provider.example");
expect(headers?.["X-OpenRouter-Title"]).toBe("StepCode");
expect(headers?.["X-Request-Header"]).toBe("request-value");
});

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