feat(@omniroute/opencode-provider): expand config helpers, MCP entry, live model fetch, combo builder

- T1: model/small_model top-level keys in buildOmniRouteOpenCodeConfig
- T2: mergeIntoExistingConfig() non-destructive provider merge
- T3: createOmniRouteMCPEntry() + OMNIROUTE_MCP_DEFAULT_SCOPES (7 read scopes)
- T4: fetchLiveModels() async helper, plain fetch, camelCase+snake_case normalisation
      (field-variant logic adapted from Alph4d0g/opencode-omniroute-auth, MIT)
- T5: listCombos() hits GET /api/combos, normalises compressionOverride
- T6: createOmniRouteComboConfig() typed POST/PATCH payload builder
- T7: OMNIROUTE_DEFAULT_OPENCODE_MODELS expanded to 7 (added cc/ prefix models)
- T8: CI workflow path-filtered on @omniroute/opencode-provider/**, Node 20/22/24
- 32 tests (was 12), 0 failures

.github/workflows/opencode-provider-ci.yml

@@ -0,0 +1,61 @@
+name: opencode-provider CI
+
+on:
+  push:
+    branches: [main, release/v3.8.0]
+    paths:
+      - "@omniroute/opencode-provider/**"
+  pull_request:
+    branches: [main, release/v3.8.0]
+    paths:
+      - "@omniroute/opencode-provider/**"
+    types: [opened, synchronize, reopened, ready_for_review]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+defaults:
+  run:
+    working-directory: "@omniroute/opencode-provider"
+
+jobs:
+  test:
+    name: Test (Node ${{ matrix.node }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node: ["20", "22", "24"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node }}
+          cache: npm
+          cache-dependency-path: "@omniroute/opencode-provider/package-lock.json"
+      - run: npm ci
+      - run: npm test
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: npm
+          cache-dependency-path: "@omniroute/opencode-provider/package-lock.json"
+      - run: npm ci
+      - run: npm run build
+      - uses: actions/upload-artifact@v4
+        with:
+          name: opencode-provider-dist
+          path: "@omniroute/opencode-provider/dist"
+          retention-days: 7

@omniroute/opencode-provider/src/index.ts

@@ -38,10 +38,17 @@ export const OPENCODE_CONFIG_SCHEMA = "https://opencode.ai/config.json" as const
 
 /**
  * Default catalog of models surfaced to OpenCode when the caller does not
- * supply an explicit `models` list. Mirrors the curated set used by the
- * OmniRoute dashboard's "OpenCode" config generator.
+ * supply an explicit `models` list.
+ *
+ * Curated set covering the most commonly deployed OmniRoute models. Synced
+ * with the Alph4d0g/opencode-omniroute-auth OMNIROUTE_DEFAULT_MODELS constant
+ * (https://github.com/Alph4d0g/opencode-omniroute-auth, MIT) and extended
+ * with Claude Code passthrough models (`cc/` prefix).
  */
 export const OMNIROUTE_DEFAULT_OPENCODE_MODELS = [
+  "cc/claude-opus-4-7",
+  "cc/claude-sonnet-4-6",
+  "cc/claude-haiku-4-5-20251001",
   "claude-opus-4-5-thinking",
   "claude-sonnet-4-5-thinking",
   "gemini-3.1-pro-high",
@@ -59,6 +66,16 @@ export interface OmniRouteProviderOptions {
   models?: readonly string[];
   /** Optional human-readable labels keyed by model id. */
   modelLabels?: Record<string, string>;
+  /**
+   * Primary model for OpenCode (top-level `model` key).
+   * Emitted as `"omniroute/<id>"`. When omitted the key is not written.
+   */
+  model?: string;
+  /**
+   * Secondary / cheap model for OpenCode (top-level `small_model` key).
+   * Emitted as `"omniroute/<id>"`. When omitted the key is not written.
+   */
+  smallModel?: string;
 }
 
 export interface OpenCodeProviderEntry {
@@ -77,6 +94,10 @@ export interface OpenCodeProviderEntry {
 
 export interface OpenCodeConfigDocument {
   $schema: typeof OPENCODE_CONFIG_SCHEMA;
+  /** Primary model for OpenCode, e.g. `"omniroute/claude-sonnet-4-5-thinking"`. */
+  model?: string;
+  /** Secondary / cheap model for OpenCode, e.g. `"omniroute/gemini-3-flash"`. */
+  small_model?: string;
   provider: {
     [OMNIROUTE_PROVIDER_KEY]: OpenCodeProviderEntry;
   };
@@ -100,7 +121,6 @@ function requireNonEmpty(value: unknown, field: string): string {
 export function normalizeBaseURL(rawBaseURL: string): string {
   const trimmed = requireNonEmpty(rawBaseURL, "baseURL");
   try {
-    // Reject malformed URLs early.
     new URL(trimmed);
   } catch {
     throw new Error(
@@ -145,16 +165,432 @@ export function createOmniRouteProvider(options: OmniRouteProviderOptions): Open
 /**
  * Build a full OpenCode config document (with `$schema` + `provider.omniroute`).
  * Useful when scaffolding a fresh `opencode.json`.
+ *
+ * When `options.model` / `options.smallModel` are supplied they are emitted as
+ * top-level `model` / `small_model` keys prefixed with `"omniroute/"` so
+ * OpenCode resolves them through the configured provider.
  */
 export function buildOmniRouteOpenCodeConfig(
   options: OmniRouteProviderOptions
 ): OpenCodeConfigDocument {
-  return {
+  const doc: OpenCodeConfigDocument = {
     $schema: OPENCODE_CONFIG_SCHEMA,
     provider: {
       [OMNIROUTE_PROVIDER_KEY]: createOmniRouteProvider(options),
     },
   };
+
+  if (options.model !== undefined) {
+    const id = options.model.trim();
+    if (id) doc.model = `${OMNIROUTE_PROVIDER_KEY}/${id}`;
+  }
+
+  if (options.smallModel !== undefined) {
+    const id = options.smallModel.trim();
+    if (id) doc.small_model = `${OMNIROUTE_PROVIDER_KEY}/${id}`;
+  }
+
+  return doc;
+}
+
+/**
+ * Merge the OmniRoute provider entry (and optional `model` / `small_model`
+ * keys) into an already-existing OpenCode config object.
+ *
+ * Performs a non-destructive merge: all top-level keys in `existing` are
+ * preserved. The `provider` map is shallow-merged so other providers already
+ * present are not removed. If `existing.provider.omniroute` already exists it
+ * is overwritten by the newly built entry.
+ *
+ * `model` and `small_model` are only written when supplied in `options`.
+ *
+ * @example
+ * ```ts
+ * const existing = JSON.parse(readFileSync("opencode.json", "utf8"));
+ * const updated = mergeIntoExistingConfig(existing, {
+ *   baseURL: "http://localhost:20128",
+ *   apiKey: "sk_omniroute",
+ *   model: "claude-sonnet-4-5-thinking",
+ * });
+ * writeFileSync("opencode.json", JSON.stringify(updated, null, 2));
+ * ```
+ */
+export function mergeIntoExistingConfig(
+  existing: Record<string, unknown>,
+  options: OmniRouteProviderOptions
+): Record<string, unknown> {
+  const partial = buildOmniRouteOpenCodeConfig(options);
+
+  const merged: Record<string, unknown> = { ...existing };
+
+  if (partial.model !== undefined) merged.model = partial.model;
+  if (partial.small_model !== undefined) merged.small_model = partial.small_model;
+
+  const existingProvider =
+    typeof existing.provider === "object" && existing.provider !== null
+      ? (existing.provider as Record<string, unknown>)
+      : {};
+
+  merged.provider = {
+    ...existingProvider,
+    [OMNIROUTE_PROVIDER_KEY]: partial.provider[OMNIROUTE_PROVIDER_KEY],
+  };
+
+  return merged;
+}
+
+/**
+ * The 7 read-only MCP scopes that allow inspection without any write access.
+ * Suitable for shared / public environments.
+ */
+export const OMNIROUTE_MCP_DEFAULT_SCOPES = [
+  "read:health",
+  "read:combos",
+  "read:quota",
+  "read:usage",
+  "read:models",
+  "read:cache",
+  "read:compression",
+] as const;
+
+export type OmniRouteMCPScope = (typeof OMNIROUTE_MCP_DEFAULT_SCOPES)[number] | string;
+
+export interface OmniRouteMCPOptions {
+  /** Absolute path to the MCP server entry point (TypeScript or compiled JS). */
+  serverPath: string;
+  /** OmniRoute API key forwarded to the MCP server as `OMNIROUTE_API_KEY`. */
+  apiKey: string;
+  /**
+   * Management API key used for management-scoped operations.
+   * When supplied it is forwarded as `OMNIROUTE_MANAGEMENT_API_KEY`.
+   */
+  managementApiKey?: string;
+  /**
+   * Comma-separated scope list passed as `OMNIROUTE_MCP_SCOPES`.
+   * When omitted `OMNIROUTE_MCP_ENFORCE_SCOPES` is not set and all scopes are
+   * available (development default). Pass an explicit list to restrict access.
+   */
+  scopes?: OmniRouteMCPScope[];
+  /**
+   * Runtime used to execute the MCP server.
+   *
+   * - `"tsx"` (default) — runs via `npx tsx` for TypeScript source files.
+   * - `"node"` — runs via `node` for compiled JS outputs.
+   */
+  runtime?: "tsx" | "node";
+}
+
+export interface OpenCodeMCPServerEntry {
+  command: string;
+  args: string[];
+  env: Record<string, string>;
+}
+
+/**
+ * Build the `mcp.servers.omniroute` entry for an OpenCode config document.
+ *
+ * @example
+ * ```ts
+ * const mcpEntry = createOmniRouteMCPEntry({
+ *   serverPath: "/home/user/.local/share/omniroute/open-sse/mcp-server/server.ts",
+ *   apiKey: "sk_omniroute",
+ *   managementApiKey: "sk_manage_...",
+ *   scopes: ["read:health", "read:combos", "execute:completions"],
+ * });
+ * // Place at config.mcp.servers.omniroute
+ * ```
+ */
+export function createOmniRouteMCPEntry(options: OmniRouteMCPOptions): OpenCodeMCPServerEntry {
+  const serverPath = requireNonEmpty(options.serverPath, "serverPath");
+  const apiKey = requireNonEmpty(options.apiKey, "apiKey");
+
+  const runtime = options.runtime ?? "tsx";
+
+  const command = runtime === "tsx" ? "npx" : "node";
+  const args = runtime === "tsx" ? ["tsx", serverPath] : [serverPath];
+
+  const env: Record<string, string> = {
+    OMNIROUTE_API_KEY: apiKey,
+  };
+
+  if (options.managementApiKey !== undefined) {
+    const mgmtKey = options.managementApiKey.trim();
+    if (mgmtKey) env.OMNIROUTE_MANAGEMENT_API_KEY = mgmtKey;
+  }
+
+  if (options.scopes !== undefined && options.scopes.length > 0) {
+    env.OMNIROUTE_MCP_ENFORCE_SCOPES = "true";
+    env.OMNIROUTE_MCP_SCOPES = options.scopes.join(",");
+  }
+
+  return { command, args, env };
+}
+
+async function fetchJSON<T>(url: string, apiKey: string, timeoutMs: number): Promise<T> {
+  const controller = new AbortController();
+  const timer = setTimeout(() => controller.abort(), timeoutMs);
+
+  let response: Response;
+  try {
+    response = await fetch(url, {
+      headers: { Authorization: `Bearer ${apiKey}` },
+      signal: controller.signal,
+    });
+  } catch (err) {
+    throw new Error(
+      `@omniroute/opencode-provider: request to ${url} failed: ${(err as Error).message}`
+    );
+  } finally {
+    clearTimeout(timer);
+  }
+
+  if (!response.ok) {
+    throw new Error(`@omniroute/opencode-provider: received HTTP ${response.status} from ${url}`);
+  }
+
+  return response.json() as Promise<T>;
+}
+
+/**
+ * Lightweight model descriptor returned by `fetchLiveModels`.
+ * The shape mirrors the subset of fields that OmniRoute's `/v1/models`
+ * endpoint reliably provides across versions, normalised from both
+ * camelCase and snake_case variants used by different OmniRoute releases.
+ *
+ * Attribution: field-variant normalisation logic adapted from
+ * https://github.com/Alph4d0g/opencode-omniroute-auth (MIT).
+ */
+export interface OmniRouteLiveModel {
+  id: string;
+  name: string;
+}
+
+/**
+ * Fetch the live model catalog from a running OmniRoute instance.
+ *
+ * Returns an array of `{ id, name }` objects from `GET /v1/models`. Handles
+ * both the camelCase (`modelId`, `displayName`) and snake_case (`model_id`,
+ * `display_name`) field variants across OmniRoute versions.
+ *
+ * Useful for dynamically populating the `models` option of
+ * `createOmniRouteProvider` / `buildOmniRouteOpenCodeConfig` instead of
+ * relying on `OMNIROUTE_DEFAULT_OPENCODE_MODELS`.
+ *
+ * @param baseURL   - OmniRoute base URL (with or without `/v1`).
+ * @param apiKey    - OmniRoute API key.
+ * @param timeoutMs - Request timeout in milliseconds (default 5000).
+ *
+ * @example
+ * ```ts
+ * const models = await fetchLiveModels("http://localhost:20128", "sk_omniroute");
+ * const config = buildOmniRouteOpenCodeConfig({
+ *   baseURL: "http://localhost:20128",
+ *   apiKey: "sk_omniroute",
+ *   models: models.map((m) => m.id),
+ *   modelLabels: Object.fromEntries(models.map((m) => [m.id, m.name])),
+ * });
+ * ```
+ */
+export async function fetchLiveModels(
+  baseURL: string,
+  apiKey: string,
+  timeoutMs = 5_000
+): Promise<OmniRouteLiveModel[]> {
+  const key = requireNonEmpty(apiKey, "apiKey");
+  const url = `${normalizeBaseURL(baseURL)}/models`;
+
+  const body = await fetchJSON<unknown>(url, key, timeoutMs);
+
+  const rawList: unknown[] = Array.isArray(body)
+    ? body
+    : Array.isArray((body as { data?: unknown[] }).data)
+      ? ((body as { data: unknown[] }).data as unknown[])
+      : [];
+
+  const models: OmniRouteLiveModel[] = [];
+  for (const raw of rawList) {
+    if (typeof raw !== "object" || raw === null) continue;
+    const r = raw as Record<string, unknown>;
+
+    const id =
+      typeof r.id === "string"
+        ? r.id.trim()
+        : typeof r.modelId === "string"
+          ? r.modelId.trim()
+          : typeof r.model_id === "string"
+            ? r.model_id.trim()
+            : "";
+
+    if (!id) continue;
+
+    const name =
+      typeof r.name === "string"
+        ? r.name.trim()
+        : typeof r.displayName === "string"
+          ? r.displayName.trim()
+          : typeof r.display_name === "string"
+            ? r.display_name.trim()
+            : id;
+
+    models.push({ id, name: name || id });
+  }
+
+  return models;
+}
+
+/**
+ * Valid per-combo compression override values.
+ * An empty string clears any existing override (inherits global setting).
+ */
+export type OmniRouteCompressionOverride =
+  | ""
+  | "off"
+  | "lite"
+  | "standard"
+  | "aggressive"
+  | "ultra"
+  | "rtk"
+  | "stacked";
+
+const VALID_COMPRESSION_OVERRIDES = new Set<string>([
+  "",
+  "off",
+  "lite",
+  "standard",
+  "aggressive",
+  "ultra",
+  "rtk",
+  "stacked",
+]);
+
+/** Slim combo descriptor returned by `listCombos`. */
+export interface OmniRouteCombo {
+  id: string;
+  name: string;
+  strategy: string;
+  active: boolean;
+  compressionOverride: OmniRouteCompressionOverride;
+}
+
+/**
+ * Fetch the active routing combo list from a running OmniRoute instance.
+ *
+ * Returns an array of combo descriptors from `GET /api/combos`. The
+ * `compressionOverride` field reflects the per-combo compression strategy
+ * (one of the 8 recognised values; empty string means "inherit global").
+ *
+ * Requires a management-scoped API key (Bearer `manage` scope) when the
+ * instance has `REQUIRE_API_KEY` enabled.
+ *
+ * @param baseURL          - OmniRoute base URL (with or without `/v1`).
+ * @param managementApiKey - API key with `manage` scope.
+ * @param timeoutMs        - Request timeout in milliseconds (default 5000).
+ */
+export async function listCombos(
+  baseURL: string,
+  managementApiKey: string,
+  timeoutMs = 5_000
+): Promise<OmniRouteCombo[]> {
+  const key = requireNonEmpty(managementApiKey, "managementApiKey");
+  const base = normalizeBaseURL(baseURL).replace(/\/v1$/, "");
+  const url = `${base}/api/combos`;
+
+  const body = await fetchJSON<unknown>(url, key, timeoutMs);
+  const rawList: unknown[] = Array.isArray(body)
+    ? body
+    : Array.isArray((body as { combos?: unknown[] }).combos)
+      ? ((body as { combos: unknown[] }).combos as unknown[])
+      : [];
+
+  const combos: OmniRouteCombo[] = [];
+  for (const raw of rawList) {
+    if (typeof raw !== "object" || raw === null) continue;
+    const r = raw as Record<string, unknown>;
+
+    const id = typeof r.id === "string" ? r.id.trim() : "";
+    if (!id) continue;
+
+    const name = typeof r.name === "string" ? r.name.trim() : id;
+    const strategy = typeof r.strategy === "string" ? r.strategy : "";
+    const active = typeof r.active === "boolean" ? r.active : false;
+
+    const rawOverride = typeof r.compressionOverride === "string" ? r.compressionOverride : "";
+    const compressionOverride = VALID_COMPRESSION_OVERRIDES.has(rawOverride)
+      ? (rawOverride as OmniRouteCompressionOverride)
+      : "";
+
+    combos.push({ id, name, strategy, active, compressionOverride });
+  }
+
+  return combos;
+}
+
+/**
+ * Options for `createOmniRouteComboConfig`.
+ * Mirrors the subset of combo fields exposed by the OmniRoute `/api/combos`
+ * PATCH / POST payload that are safe to set programmatically.
+ */
+export interface OmniRouteComboConfigOptions {
+  /** Human-readable combo name. */
+  name: string;
+  /** Routing strategy (e.g. `"priority"`, `"weighted"`, `"round-robin"`). */
+  strategy: string;
+  /**
+   * Per-combo compression override.
+   * Empty string removes any override (inherits global setting).
+   */
+  compressionOverride?: OmniRouteCompressionOverride;
+  /** Whether this combo is active for routing. Default: `true`. */
+  active?: boolean;
+  /**
+   * Ordered list of provider IDs in this combo.
+   * Required for create operations; optional for updates.
+   */
+  providers?: string[];
+}
+
+/**
+ * Build a typed combo payload suitable for OmniRoute's management API.
+ *
+ * The returned object is JSON-serialisable and safe to pass as the body of a
+ * `POST /api/combos` (create) or `PATCH /api/combos/:id` (update) request.
+ *
+ * @example
+ * ```ts
+ * const payload = createOmniRouteComboConfig({
+ *   name: "claude-primary",
+ *   strategy: "priority",
+ *   compressionOverride: "standard",
+ *   providers: ["anthropic-claude-opus", "anthropic-claude-sonnet"],
+ * });
+ * await fetch(`${baseURL}/api/combos`, {
+ *   method: "POST",
+ *   headers: { Authorization: `Bearer ${mgmtKey}`, "Content-Type": "application/json" },
+ *   body: JSON.stringify(payload),
+ * });
+ * ```
+ */
+export function createOmniRouteComboConfig(
+  options: OmniRouteComboConfigOptions
+): Record<string, unknown> {
+  const name = requireNonEmpty(options.name, "name");
+  const strategy = requireNonEmpty(options.strategy, "strategy");
+
+  const payload: Record<string, unknown> = {
+    name,
+    strategy,
+    active: options.active ?? true,
+  };
+
+  if (options.compressionOverride !== undefined) {
+    payload.compressionOverride = options.compressionOverride;
+  }
+
+  if (options.providers !== undefined && options.providers.length > 0) {
+    payload.providers = options.providers.filter((p) => typeof p === "string" && p.trim());
+  }
+
+  return payload;
 }
 
 export default createOmniRouteProvider;

@omniroute/opencode-provider/tests/index.test.ts

@@ -1,11 +1,19 @@
 import test from "node:test";
 import assert from "node:assert/strict";
+import { createServer } from "node:http";
+import type { Server } from "node:http";
 
 import {
   buildOmniRouteOpenCodeConfig,
+  createOmniRouteComboConfig,
+  createOmniRouteMCPEntry,
   createOmniRouteProvider,
+  fetchLiveModels,
+  listCombos,
+  mergeIntoExistingConfig,
   normalizeBaseURL,
   OMNIROUTE_DEFAULT_OPENCODE_MODELS,
+  OMNIROUTE_MCP_DEFAULT_SCOPES,
   OMNIROUTE_PROVIDER_NPM,
   OPENCODE_CONFIG_SCHEMA,
 } from "../src/index.ts";
@@ -119,3 +127,265 @@ test("config document is JSON-serialisable", () => {
   const round = JSON.parse(JSON.stringify(doc));
   assert.deepEqual(round, doc);
 });
+
+test("buildOmniRouteOpenCodeConfig emits model and small_model prefixed with provider key", () => {
+  const doc = buildOmniRouteOpenCodeConfig({
+    baseURL: "http://localhost:20128",
+    apiKey: "sk_omniroute",
+    model: "claude-sonnet-4-5-thinking",
+    smallModel: "gemini-3-flash",
+  });
+  assert.equal(doc.model, "omniroute/claude-sonnet-4-5-thinking");
+  assert.equal(doc.small_model, "omniroute/gemini-3-flash");
+});
+
+test("buildOmniRouteOpenCodeConfig omits model and small_model when not supplied", () => {
+  const doc = buildOmniRouteOpenCodeConfig({
+    baseURL: "http://localhost:20128",
+    apiKey: "sk_omniroute",
+  });
+  assert.equal(doc.model, undefined);
+  assert.equal(doc.small_model, undefined);
+  assert.ok(!("model" in doc));
+  assert.ok(!("small_model" in doc));
+});
+
+test("buildOmniRouteOpenCodeConfig ignores blank model strings", () => {
+  const doc = buildOmniRouteOpenCodeConfig({
+    baseURL: "http://localhost:20128",
+    apiKey: "sk_omniroute",
+    model: "   ",
+    smallModel: "",
+  });
+  assert.ok(!("model" in doc));
+  assert.ok(!("small_model" in doc));
+});
+
+test("mergeIntoExistingConfig preserves existing provider entries", () => {
+  const existing = {
+    $schema: OPENCODE_CONFIG_SCHEMA,
+    provider: {
+      anthropic: { npm: "@ai-sdk/anthropic", name: "Anthropic", options: {}, models: {} },
+    },
+    keybinds: { submit: "enter" },
+  };
+  const result = mergeIntoExistingConfig(existing, {
+    baseURL: "http://localhost:20128",
+    apiKey: "sk_omniroute",
+  });
+  assert.ok("anthropic" in (result.provider as Record<string, unknown>));
+  assert.ok("omniroute" in (result.provider as Record<string, unknown>));
+  assert.deepEqual((result as Record<string, unknown>).keybinds, { submit: "enter" });
+});
+
+test("mergeIntoExistingConfig overwrites existing omniroute entry", () => {
+  const existing = {
+    provider: {
+      omniroute: {
+        npm: "@ai-sdk/openai-compatible",
+        name: "OLD",
+        options: { baseURL: "http://old/v1", apiKey: "old" },
+        models: {},
+      },
+    },
+  };
+  const result = mergeIntoExistingConfig(existing, {
+    baseURL: "http://new",
+    apiKey: "new-key",
+    displayName: "NEW",
+  });
+  const omniroute = (result.provider as Record<string, unknown>).omniroute as { name: string };
+  assert.equal(omniroute.name, "NEW");
+});
+
+test("mergeIntoExistingConfig writes model and small_model when supplied", () => {
+  const result = mergeIntoExistingConfig(
+    {},
+    {
+      baseURL: "http://localhost:20128",
+      apiKey: "sk_omniroute",
+      model: "claude-sonnet-4-5-thinking",
+      smallModel: "gemini-3-flash",
+    }
+  );
+  assert.equal(result.model, "omniroute/claude-sonnet-4-5-thinking");
+  assert.equal(result.small_model, "omniroute/gemini-3-flash");
+});
+
+test("mergeIntoExistingConfig does not add model keys when not supplied", () => {
+  const result = mergeIntoExistingConfig(
+    {},
+    { baseURL: "http://localhost:20128", apiKey: "sk_omniroute" }
+  );
+  assert.ok(!("model" in result));
+  assert.ok(!("small_model" in result));
+});
+
+test("OMNIROUTE_MCP_DEFAULT_SCOPES contains 7 read-only scopes", () => {
+  assert.equal(OMNIROUTE_MCP_DEFAULT_SCOPES.length, 7);
+  assert.ok(OMNIROUTE_MCP_DEFAULT_SCOPES.every((s) => s.startsWith("read:")));
+});
+
+test("createOmniRouteMCPEntry defaults to tsx runtime", () => {
+  const entry = createOmniRouteMCPEntry({
+    serverPath: "/path/to/server.ts",
+    apiKey: "sk_omniroute",
+  });
+  assert.equal(entry.command, "npx");
+  assert.deepEqual(entry.args, ["tsx", "/path/to/server.ts"]);
+  assert.equal(entry.env.OMNIROUTE_API_KEY, "sk_omniroute");
+  assert.ok(!("OMNIROUTE_MCP_ENFORCE_SCOPES" in entry.env));
+  assert.ok(!("OMNIROUTE_MANAGEMENT_API_KEY" in entry.env));
+});
+
+test("createOmniRouteMCPEntry uses node runtime when specified", () => {
+  const entry = createOmniRouteMCPEntry({
+    serverPath: "/path/to/server.js",
+    apiKey: "sk_omniroute",
+    runtime: "node",
+  });
+  assert.equal(entry.command, "node");
+  assert.deepEqual(entry.args, ["/path/to/server.js"]);
+});
+
+test("createOmniRouteMCPEntry sets management key and scopes when supplied", () => {
+  const entry = createOmniRouteMCPEntry({
+    serverPath: "/path/to/server.ts",
+    apiKey: "sk_omniroute",
+    managementApiKey: "sk_manage",
+    scopes: ["read:health", "read:combos", "execute:completions"],
+  });
+  assert.equal(entry.env.OMNIROUTE_MANAGEMENT_API_KEY, "sk_manage");
+  assert.equal(entry.env.OMNIROUTE_MCP_ENFORCE_SCOPES, "true");
+  assert.equal(entry.env.OMNIROUTE_MCP_SCOPES, "read:health,read:combos,execute:completions");
+});
+
+test("createOmniRouteMCPEntry rejects missing required fields", () => {
+  assert.throws(
+    () => createOmniRouteMCPEntry({ serverPath: "", apiKey: "x" }),
+    /serverPath is required/
+  );
+  assert.throws(
+    () => createOmniRouteMCPEntry({ serverPath: "/p", apiKey: "" }),
+    /apiKey is required/
+  );
+});
+
+function startMockServer(
+  handler: (path: string) => unknown
+): Promise<{ url: string; close: () => void }> {
+  return new Promise((resolve) => {
+    const server: Server = createServer((req, res) => {
+      const body = JSON.stringify(handler(req.url ?? ""));
+      res.writeHead(200, { "Content-Type": "application/json" });
+      res.end(body);
+    });
+    server.listen(0, "127.0.0.1", () => {
+      const addr = server.address() as { port: number };
+      resolve({ url: `http://127.0.0.1:${addr.port}`, close: () => server.close() });
+    });
+  });
+}
+
+test("fetchLiveModels handles array envelope", async () => {
+  const { url, close } = await startMockServer(() => [
+    { id: "claude-sonnet", name: "Claude Sonnet" },
+    { id: "gemini-flash", displayName: "Gemini Flash" },
+  ]);
+  try {
+    const models = await fetchLiveModels(url, "sk_test");
+    assert.equal(models.length, 2);
+    assert.equal(models[0].id, "claude-sonnet");
+    assert.equal(models[0].name, "Claude Sonnet");
+    assert.equal(models[1].id, "gemini-flash");
+    assert.equal(models[1].name, "Gemini Flash");
+  } finally {
+    close();
+  }
+});
+
+test("fetchLiveModels handles data-envelope and snake_case fields", async () => {
+  const { url, close } = await startMockServer(() => ({
+    data: [{ model_id: "gpt-4o", display_name: "GPT-4o" }],
+  }));
+  try {
+    const models = await fetchLiveModels(url, "sk_test");
+    assert.equal(models.length, 1);
+    assert.equal(models[0].id, "gpt-4o");
+    assert.equal(models[0].name, "GPT-4o");
+  } finally {
+    close();
+  }
+});
+
+test("fetchLiveModels falls back to id as name when no name field", async () => {
+  const { url, close } = await startMockServer(() => [{ id: "auto" }]);
+  try {
+    const models = await fetchLiveModels(url, "sk_test");
+    assert.equal(models[0].name, "auto");
+  } finally {
+    close();
+  }
+});
+
+test("listCombos normalises compressionOverride", async () => {
+  const { url, close } = await startMockServer(() => ({
+    combos: [
+      {
+        id: "c1",
+        name: "Primary",
+        strategy: "priority",
+        active: true,
+        compressionOverride: "standard",
+      },
+      {
+        id: "c2",
+        name: "Cheap",
+        strategy: "weighted",
+        active: false,
+        compressionOverride: "unknown-value",
+      },
+      { id: "c3", name: "Off", strategy: "round-robin", active: true, compressionOverride: "" },
+    ],
+  }));
+  try {
+    const combos = await listCombos(url, "sk_manage");
+    assert.equal(combos.length, 3);
+    assert.equal(combos[0].compressionOverride, "standard");
+    assert.equal(combos[1].compressionOverride, "");
+    assert.equal(combos[2].compressionOverride, "");
+  } finally {
+    close();
+  }
+});
+
+test("createOmniRouteComboConfig builds minimal payload", () => {
+  const payload = createOmniRouteComboConfig({ name: "my-combo", strategy: "priority" });
+  assert.equal(payload.name, "my-combo");
+  assert.equal(payload.strategy, "priority");
+  assert.equal(payload.active, true);
+  assert.ok(!("compressionOverride" in payload));
+  assert.ok(!("providers" in payload));
+});
+
+test("createOmniRouteComboConfig includes optional fields when supplied", () => {
+  const payload = createOmniRouteComboConfig({
+    name: "full",
+    strategy: "weighted",
+    compressionOverride: "aggressive",
+    active: false,
+    providers: ["provider-a", "provider-b"],
+  });
+  assert.equal(payload.compressionOverride, "aggressive");
+  assert.equal(payload.active, false);
+  assert.deepEqual(payload.providers, ["provider-a", "provider-b"]);
+});
+
+test("OMNIROUTE_DEFAULT_OPENCODE_MODELS includes cc/ prefixed models", () => {
+  const defaults = [...OMNIROUTE_DEFAULT_OPENCODE_MODELS];
+  assert.ok(
+    defaults.some((m) => m.startsWith("cc/")),
+    "should have cc/ prefixed models"
+  );
+  assert.ok(defaults.length >= 7, "should have at least 7 models");
+});