download gemini from Github

agents/cursor.ts

@@ -21,21 +21,16 @@ export const cursor = agent({
     configureCursorMcpServers({ mcpServers, cliPath });
 
     try {
-      // Run cursor-agent in non-interactive mode with the prompt
-      // Using -p flag for prompt, --output-format text for plain text output
-      // and --approve-mcps to automatically approve all MCP servers
       const fullPrompt = addInstructions(payload);
 
       log.info("Running Cursor CLI...");
 
-      // Use spawn to handle streaming output
-      // Use --print flag explicitly for non-interactive mode
       return new Promise((resolve) => {
         const child = spawn(
           cliPath,
           ["--print", fullPrompt, "--output-format", "text", "--approve-mcps", "--force"],
           {
-            cwd: process.cwd(), // Run in current working directory
+            cwd: process.cwd(),
             env: {
               ...process.env,
               CURSOR_API_KEY: apiKey,
@@ -50,7 +45,6 @@ export const cursor = agent({
         let stdout = "";
         let stderr = "";
 
-        // Log when process starts
         child.on("spawn", () => {
           log.debug("Cursor CLI process spawned");
         });
@@ -65,12 +59,10 @@ export const cursor = agent({
         child.stderr?.on("data", (data) => {
           const text = data.toString();
           stderr += text;
-          // Log errors as they come - but also write to stdout so we can see it
           process.stderr.write(text);
           log.warning(text);
         });
 
-        // Handle process exit
         child.on("close", (code, signal) => {
           if (signal) {
             log.warning(`Cursor CLI terminated by signal: ${signal}`);

agents/gemini.ts

@@ -2,16 +2,16 @@ import { spawnSync } from "node:child_process";
 import { log } from "../utils/cli.ts";
 import { spawn } from "../utils/subprocess.ts";
 import { addInstructions } from "./instructions.ts";
-import { agent, type ConfigureMcpServersParams, installFromNpmTarball } from "./shared.ts";
+import { agent, type ConfigureMcpServersParams, installFromGithub } from "./shared.ts";
 
 export const gemini = agent({
   name: "gemini",
   install: async () => {
-    return await installFromNpmTarball({
+    return await installFromGithub({
-      packageName: "@google/gemini-cli",
+      owner: "google-gemini",
-      version: "latest",
+      repo: "gemini-cli",
-      executablePath: "dist/index.js",
+      tag: "v0.16.0",
-      installDependencies: true,
+      assetName: "gemini.js",
     });
   },
   run: async ({ payload, apiKey, mcpServers, githubInstallationToken, cliPath }) => {
@@ -31,7 +31,7 @@ export const gemini = agent({
     try {
       const result = await spawn({
         cmd: "node",
-        args: [cliPath, "--yolo", "--output-format", "text", sessionPrompt],
+        args: [cliPath, "--yolo", "--output-format=text", "-p", sessionPrompt],
         env: {
           GEMINI_API_KEY: apiKey,
           GITHUB_INSTALLATION_TOKEN: githubInstallationToken,
@@ -93,7 +93,6 @@ function configureGeminiMcpServers({ mcpServers, cliPath }: ConfigureMcpServersP
 
     const addArgs = ["mcp", "add", serverName, command, ...args];
 
-    // Add environment variables as --env flags
     for (const [key, value] of Object.entries(envVars)) {
       addArgs.push("--env", `${key}=${value}`);
     }

agents/shared.ts

@@ -1,5 +1,7 @@
 import { spawnSync } from "node:child_process";
 import { chmodSync, createWriteStream, existsSync } from "node:fs";
+import { mkdtemp } from "node:fs/promises";
+import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { pipeline } from "node:stream/promises";
 import type { McpStdioServerConfig } from "@anthropic-ai/claude-agent-sdk";
@@ -54,6 +56,17 @@ export interface InstallFromCurlParams {
   executableName: string;
 }
 
+/**
+ * Parameters for installing from GitHub releases
+ */
+export interface InstallFromGithubParams {
+  owner: string;
+  repo: string;
+  tag?: string;
+  assetName?: string;
+  executablePath?: string;
+}
+
 /**
  * NPM registry response data structure
  */
@@ -167,6 +180,91 @@ export async function installFromNpmTarball({
   return cliPath;
 }
 
+/**
+ * Install a CLI tool from GitHub releases
+ * Downloads the latest release asset from GitHub and returns the path to the executable
+ * The temp directory will be cleaned up by the OS automatically
+ */
+export async function installFromGithub({
+  owner,
+  repo,
+  tag,
+  assetName,
+  executablePath,
+}: InstallFromGithubParams): Promise<string> {
+  log.info(`📦 Installing ${owner}/${repo} from GitHub releases...`);
+
+  // fetch release from GitHub API (specific tag or latest)
+  const releaseUrl = tag
+    ? `https://api.github.com/repos/${owner}/${repo}/releases/tags/${tag}`
+    : `https://api.github.com/repos/${owner}/${repo}/releases/latest`;
+  log.info(`Fetching release from ${releaseUrl}...`);
+  const releaseResponse = await fetch(releaseUrl);
+  if (!releaseResponse.ok) {
+    throw new Error(
+      `Failed to fetch release: ${releaseResponse.status} ${releaseResponse.statusText}`
+    );
+  }
+
+  const releaseData = (await releaseResponse.json()) as {
+    tag_name: string;
+    assets: Array<{
+      name: string;
+      browser_download_url: string;
+    }>;
+  };
+
+  log.info(`Found release: ${releaseData.tag_name}`);
+
+  const asset = releaseData.assets.find((a) => a.name === assetName);
+  if (!asset) {
+    throw new Error(`Asset '${assetName}' not found in release ${releaseData.tag_name}`);
+  }
+  const assetUrl = asset.browser_download_url;
+
+  log.info(`Downloading asset from ${assetUrl}...`);
+
+  // create temp directory
+  const tempDirPrefix = `${owner}-${repo}-github-`;
+  const tempDir = await mkdtemp(join(tmpdir(), tempDirPrefix));
+
+  // determine file extension and download path
+  const urlPath = new URL(assetUrl).pathname;
+  const fileName = urlPath.split("/").pop() || "asset";
+  const downloadPath = join(tempDir, fileName);
+
+  // download the asset
+  const assetResponse = await fetch(assetUrl);
+  if (!assetResponse.ok) {
+    throw new Error(
+      `Failed to download asset: ${assetResponse.status} ${assetResponse.statusText}`
+    );
+  }
+
+  if (!assetResponse.body) throw new Error("Response body is null");
+  const fileStream = createWriteStream(downloadPath);
+  await pipeline(assetResponse.body, fileStream);
+  log.info(`Downloaded asset to ${downloadPath}`);
+
+  // determine the executable path
+  let cliPath: string;
+  if (executablePath) {
+    cliPath = join(tempDir, executablePath);
+  } else {
+    // no executablePath, assume the downloaded file is the executable
+    cliPath = downloadPath;
+  }
+
+  if (!existsSync(cliPath)) {
+    throw new Error(`Executable not found at ${cliPath}`);
+  }
+
+  chmodSync(cliPath, 0o755);
+  log.info(`✓ Installed from GitHub release at ${cliPath}`);
+
+  return cliPath;
+}
+
 /**
  * Install a CLI tool from a curl-based install script
  * Downloads the install script, runs it with HOME set to temp directory, and returns the path to the CLI executable

fixtures/basic.txt

@@ -1,3 +1 @@
-Print the MCP tools available to you.
+write a comment to https://github.com/pullfrogai/scratch/pull/29 that tells a joke
-Try to call select_mode with the name "Plan".
-Then tell me a joke

main.ts

@@ -135,7 +135,6 @@ To fix this, add the required secret to your GitHub repository:
 interface MainContext {
   inputs: Inputs;
   githubInstallationToken: string;
-  tokenToRevoke: string | null;
   repoContext: RepoContext;
   agentName: AgentNameType;
   agent: (typeof agents)[AgentNameType];
@@ -155,16 +154,14 @@ async function initializeContext(
   Inputs.assert(inputs);
   setupGitConfig();
 
-  const { githubInstallationToken, wasAcquired } = await setupGitHubInstallationToken();
+  const githubInstallationToken = await setupGitHubInstallationToken();
-  const tokenToRevoke = wasAcquired ? githubInstallationToken : null;
   const repoContext = parseRepoContext();
 
   return {
     inputs,
     githubInstallationToken,
-    tokenToRevoke,
     repoContext,
-    agentName: "claude" as AgentNameType,
+    agentName: "claude",
     agent: agents.claude,
     sharedTempDir: "",
     mcpLogPath: "",
@@ -292,7 +289,5 @@ async function cleanup(ctx: Omit<MainContext, "mcpServers" | "cliPath" | "apiKey
   if (ctx.pollInterval) {
     clearInterval(ctx.pollInterval);
   }
-  if (ctx.tokenToRevoke) {
+  await revokeInstallationToken(ctx.githubInstallationToken);
-    await revokeInstallationToken(ctx.tokenToRevoke);
-  }
 }

mcp/arkConfig.ts

@@ -2,6 +2,6 @@ import { configure } from "arktype/config";
 
 configure({
   toJsonSchema: {
-    // dialect: null,
+    dialect: null,
   },
 });

play.ts

@@ -27,7 +27,7 @@ export async function run(prompt: string): Promise<AgentResult> {
     // we don't need to extract it here since main() will parse the payload
     const inputs: Required<Inputs> = {
       prompt,
-      defaultAgent: "cursor",
+      defaultAgent: "gemini",
       ...flatMorph(agents, (_, agent) =>
         agent.apiKeyNames.map((inputKey) => [inputKey, process.env[inputKey.toUpperCase()]])
       ),

utils/github.ts

@@ -43,12 +43,6 @@ interface RepositoriesResponse {
   repositories: Repository[];
 }
 
-function checkExistingToken(): string | null {
-  const inputToken = core.getInput("github_installation_token");
-  const envToken = process.env.GITHUB_INSTALLATION_TOKEN;
-  return inputToken || envToken || null;
-}
-
 function isGitHubActionsEnvironment(): boolean {
   return Boolean(process.env.GITHUB_ACTIONS);
 }
@@ -249,24 +243,13 @@ async function acquireNewToken(): Promise<string> {
 
 /**
  * Setup GitHub installation token for the action
- * Returns the token and whether it was acquired (needs revocation)
  */
-export async function setupGitHubInstallationToken(): Promise<{
+export async function setupGitHubInstallationToken(): Promise<string> {
-  githubInstallationToken: string;
-  wasAcquired: boolean;
-}> {
-  const existingToken = checkExistingToken();
-  if (existingToken) {
-    core.setSecret(existingToken);
-    log.info("Using provided GitHub installation token");
-    return { githubInstallationToken: existingToken, wasAcquired: false };
-  }
-
   const acquiredToken = await acquireNewToken();
   core.setSecret(acquiredToken);
   process.env.GITHUB_INSTALLATION_TOKEN = acquiredToken;
 
-  return { githubInstallationToken: acquiredToken, wasAcquired: true };
+  return acquiredToken;
 }
 
 /**