remove any default mapping for models

agents/opencode.ts

@@ -6,7 +6,6 @@ import { addInstructions } from "./instructions.ts";
 import {
   agent,
   type ConfigureMcpServersParams,
-  createAgentEnv,
   installFromNpmTarball,
   setupProcessAgentEnv,
 } from "./shared.ts";
@@ -211,34 +210,54 @@ export const opencode = agent({
       installDependencies: true,
     });
   },
-  run: async ({ payload, apiKey, mcpServers, cliPath }) => {
+  run: async ({ payload, apiKey, apiKeys, mcpServers, cliPath }) => {
     // 1. configure home/config directory
     const tempHome = process.env.PULLFROG_TEMP_DIR!;
     const configDir = join(tempHome, ".config", "opencode");
     mkdirSync(configDir, { recursive: true });
 
-    // 2. initialize MCP servers and sandbox
+    if (!apiKey) {
+      throw new Error("at least one API key is required for opencode agent");
+    }
+
+    // 2. build env vars from all available API keys (map to OpenCode's expected env var names)
+    const apiKeyEnv: Record<string, string> = {};
+    const envVarMap: Record<string, string> = {
+      anthropic_api_key: "ANTHROPIC_API_KEY",
+      openai_api_key: "OPENAI_API_KEY",
+      google_api_key: "GOOGLE_GENERATIVE_AI_API_KEY",
+      gemini_api_key: "GOOGLE_GENERATIVE_AI_API_KEY",
+    };
+    for (const [inputKey, value] of Object.entries(apiKeys || {})) {
+      const envVarName = envVarMap[inputKey] || inputKey.toUpperCase();
+      apiKeyEnv[envVarName] = value;
+    }
+
+    // 3. initialize MCP servers and sandbox
     configureOpenCodeMcpServers({ mcpServers });
     configureOpenCodeSandbox({ sandbox: payload.sandbox ?? false });
 
-    if (!apiKey) {
-      throw new Error("anthropic_api_key is required for opencode agent");
-    }
-
-    // 3. prepare prompt and args
+    // 4. prepare prompt and args
     const prompt = addInstructions(payload);
-    const args = ["run", "--format", "json", "-m", "anthropic/claude-sonnet-4-20250514", prompt];
+    const args = ["run", "--format", "json", prompt];
 
     if (payload.sandbox) {
       log.info("🔒 sandbox mode enabled: restricting to read-only operations");
     }
 
-    // 4. set up environment
+    // 6. set up environment
     const packageDir = join(cliPath, "..", "..");
-    setupProcessAgentEnv({ ANTHROPIC_API_KEY: apiKey, HOME: tempHome });
-    const env = createAgentEnv({ ANTHROPIC_API_KEY: apiKey, HOME: tempHome });
+    setupProcessAgentEnv({ HOME: tempHome, ...apiKeyEnv });
+    // don't pass GITHUB_TOKEN to opencode - it may try to use it incorrectly
+    const env: Record<string, string> = {
+      PATH: process.env.PATH || "",
+      HOME: tempHome,
+      LOG_LEVEL: process.env.LOG_LEVEL || "",
+      NODE_ENV: process.env.NODE_ENV || "",
+      ...apiKeyEnv,
+    };
 
-    // 5. spawn and stream JSON output
+    // 7. spawn and stream JSON output
     let output = "";
     const result = await spawn({
       cmd: cliPath,
@@ -278,7 +297,7 @@ export const opencode = agent({
       },
     });
 
-    // 6. log tokens if they weren't logged yet (fallback if result event wasn't emitted)
+    // 8. log tokens if they weren't logged yet (fallback if result event wasn't emitted)
     if (!tokensLogged && (accumulatedTokens.input > 0 || accumulatedTokens.output > 0)) {
       const totalTokens = accumulatedTokens.input + accumulatedTokens.output;
       await log.summaryTable([
@@ -291,11 +310,23 @@ export const opencode = agent({
       ]);
     }
 
-    // 7. return result
+    // 9. return result
+    if (result.exitCode !== 0) {
+      const errorMessage =
+        result.stderr || result.stdout || "Unknown error - no output from OpenCode CLI";
+      log.error(`OpenCode CLI exited with code ${result.exitCode}: ${errorMessage}`);
+      log.debug(`OpenCode stdout: ${result.stdout?.substring(0, 500)}`);
+      log.debug(`OpenCode stderr: ${result.stderr?.substring(0, 500)}`);
+      return {
+        success: false,
+        output: finalOutput || output,
+        error: errorMessage,
+      };
+    }
+
     return {
-      success: result.exitCode === 0,
+      success: true,
       output: finalOutput || output,
-      error: result.exitCode !== 0 ? result.stderr : undefined,
     };
   },
 });

agents/shared.ts

@@ -25,6 +25,7 @@ export interface AgentResult {
  */
 export interface AgentConfig {
   apiKey: string;
+  apiKeys?: Record<string, string>; // all available keys for this agent
   payload: Payload;
   mcpServers: Record<string, McpHttpServerConfig>;
   cliPath: string;

external.ts

@@ -40,7 +40,7 @@ export const agentsManifest = {
   },
   opencode: {
     displayName: "OpenCode",
-    apiKeyNames: ["anthropic_api_key"],
+    apiKeyNames: ["anthropic_api_key", "openai_api_key", "google_api_key", "gemini_api_key"],
     url: "https://opencode.ai",
   },
 } as const satisfies Record<string, AgentManifest>;

fixtures/basic.txt

@@ -1 +1 @@
-say hello
+Use the debug_shell_command MCP tool to run `git status` and show me the output

main.ts

@@ -185,13 +185,17 @@ interface MainContext {
   mcpServers: ReturnType<typeof createMcpConfigs>;
   cliPath: string;
   apiKey: string;
+  apiKeys: Record<string, string>;
 }
 
 async function initializeContext(
   inputs: Inputs,
   payload: Payload
 ): Promise<
-  Omit<MainContext, "mcpServerUrl" | "mcpServerClose" | "mcpServers" | "cliPath" | "apiKey">
+  Omit<
+    MainContext,
+    "mcpServerUrl" | "mcpServerClose" | "mcpServers" | "cliPath" | "apiKey" | "apiKeys"
+  >
 > {
   log.info(`🐸 Running pullfrog/action@${packageJson.version}...`);
   Inputs.assert(inputs);
@@ -240,8 +244,31 @@ async function resolveAgent(
     if (!agent) {
       throw new Error(`invalid agent name: ${agentName}`);
     }
-    log.info(`Selected configured agent: ${agentName}`);
-    return { agentName, agent };
+
+    // if explicitly configured (via override or payload), respect it even without matching keys
+    // this allows users to force an agent selection (will fail later with clear error if no keys)
+    const isExplicitOverride = agentOverride !== undefined || payload.agent !== null;
+
+    if (isExplicitOverride) {
+      log.info(`Selected configured agent: ${agentName}`);
+      return { agentName, agent };
+    }
+
+    // for repo-level defaults, check if agent has matching keys before selecting
+    const hasMatchingKey = agent.apiKeyNames.some((inputKey) => inputs[inputKey]);
+    if (!hasMatchingKey) {
+      log.warning(
+        `Repo default agent ${agentName} has no matching API keys. Available agents: ${
+          getAvailableAgents(inputs)
+            .map((a) => a.name)
+            .join(", ") || "none"
+        }`
+      );
+      // fall through to auto-selection for repo defaults
+    } else {
+      log.info(`Selected configured agent: ${agentName}`);
+      return { agentName, agent };
+    }
   }
 
   const availableAgents = getAvailableAgents(inputs);
@@ -330,8 +357,16 @@ async function installAgentCli(ctx: MainContext): Promise<void> {
 }
 
 async function validateApiKey(ctx: MainContext): Promise<void> {
-  const matchingInputKey = ctx.agent.apiKeyNames.find((inputKey) => ctx.inputs[inputKey]);
-  if (!matchingInputKey) {
+  // collect all matching API keys for this agent
+  const apiKeys: Record<string, string> = {};
+  for (const inputKey of ctx.agent.apiKeyNames) {
+    const value = ctx.inputs[inputKey];
+    if (value) {
+      apiKeys[inputKey] = value;
+    }
+  }
+
+  if (Object.keys(apiKeys).length === 0) {
     await throwMissingApiKeyError({
       agent: ctx.agent,
       repoContext: ctx.repoContext,
@@ -339,7 +374,10 @@ async function validateApiKey(ctx: MainContext): Promise<void> {
     // unreachable - throwMissingApiKeyError always throws
     return;
   }
-  ctx.apiKey = ctx.inputs[matchingInputKey]!;
+
+  // keep apiKey for backward compat (first available key)
+  ctx.apiKey = Object.values(apiKeys)[0];
+  ctx.apiKeys = apiKeys;
 }
 
 async function runAgent(ctx: MainContext): Promise<AgentResult> {
@@ -354,6 +392,7 @@ async function runAgent(ctx: MainContext): Promise<AgentResult> {
     payload: ctx.payload,
     mcpServers: ctx.mcpServers,
     apiKey: ctx.apiKey,
+    apiKeys: ctx.apiKeys,
     cliPath: ctx.cliPath,
   });
 }