Claudish Integration

Claudish Integration Skill

Version: 1.0.0 Purpose: Guide agents on how to query Claudish for OpenRouter model recommendations Status: Production Ready

Overview

This skill provides standardized patterns for Claude Code agents and commands to query Claudish for model recommendations. Instead of maintaining duplicate model lists, agents should query Claudish as the single source of truth for OpenRouter model data.

Key Principle: Claudish owns the model list, agents query it dynamically.

When to Use This Skill

Use this skill when:

• ✅ Building commands that need external AI model selection (e.g., /review)
• ✅ Creating proxy mode agents that delegate to OpenRouter models
• ✅ Implementing multi-model validation workflows
• ✅ Building tools that need model metadata (pricing, categories, context sizes)

Do NOT use this skill when:

• ❌ Working with embedded Claude models only (Sonnet, Opus, Haiku)
• ❌ Not using external AI models
• ❌ Claudish is not available or required

Core Patterns

Pattern 1: Query All Models (JSON)

Use Case: Get complete model list for selection UI

Implementation:

// Execute Claudish to get model list
const { stdout } = await Bash("claudish --top-models --json");

// Parse JSON output
const modelData = JSON.parse(stdout);

// Access models
const models = modelData.models; // Array of model objects

// Example: Extract model IDs
const modelIds = models.map(m => m.id);
// Result: ["x-ai/grok-code-fast-1", "minimax/minimax-m2", ...]

Expected Output:

{
  "version": "1.1.5",
  "lastUpdated": "2025-11-16",
  "source": "shared/recommended-models.md",
  "models": [
    {
      "id": "x-ai/grok-code-fast-1",
      "name": "Grok Code Fast 1",
      "description": "Ultra-fast agentic coding with visible reasoning traces",
      "provider": "xAI",
      "category": "coding",
      "priority": 1,
      "pricing": {
        "input": "$0.20/1M",
        "output": "$1.50/1M",
        "average": "$0.85/1M"
      },
      "context": "256K",
      "recommended": true
    }
    // ... more models
  ]
}

Pattern 2: Filter by Category

Use Case: Get models for specific use case (coding, reasoning, vision, budget)

Categories:

• coding - Fast coding models (Grok, MiniMax)
• reasoning - Advanced reasoning models (GPT-5, Gemini)
• vision - Multimodal models (Qwen)
• budget - Free or low-cost models (Polaris)
• all - All models (default)

Implementation:

// Get coding models only
const { stdout } = await Bash("claudish --models coding --json");
const modelData = JSON.parse(stdout);

// Models are pre-filtered by Claudish
const codingModels = modelData.models;
// Result: Only models with category === "coding"

Example: Get Best Coding Model

const { stdout } = await Bash("claudish --models coding --json");
const modelData = JSON.parse(stdout);

// First model is highest priority (sorted by priority field)
const bestCodingModel = modelData.models[0];
console.log(`Best coding model: ${bestCodingModel.id}`);
// Output: Best coding model: x-ai/grok-code-fast-1

Pattern 3: User Overrides from CLAUDE.md

Use Case: Allow users to specify preferred models in project configuration

CLAUDE.md Format:

## Claudish Configuration

**Recommended Models for Code Review:**
- x-ai/grok-code-fast-1
- google/gemini-2.5-flash
- openai/gpt-5.1-codex

**Model Categories:**
- coding: grok, minimax
- reasoning: gpt-5, gemini

Implementation:

async function getRecommendedModels() {
  // 1. Check for user override in CLAUDE.md
  const userModels = await readUserOverrideFromClaudeMd();
  if (userModels) {
    console.log("Using models from CLAUDE.md");
    return userModels;
  }

  // 2. Query Claudish for defaults
  const { stdout } = await Bash("claudish --models coding --json");
  const modelData = JSON.parse(stdout);
  return modelData.models;
}

async function readUserOverrideFromClaudeMd(): Promise<Model[] | null> {
  try {
    const claudeMd = await Read({ file_path: "/full/path/to/CLAUDE.md" });

    // Look for "Recommended Models for Code Review:" section
    const match = claudeMd.match(/Recommended Models for Code Review:(.*?)(?=\n\n|$)/s);
    if (!match) return null;

    // Extract model IDs
    const modelIds = match[1]
      .split("\n")
      .filter(line => line.trim().startsWith("-"))
      .map(line => line.replace(/^-\s*/, "").trim());

    if (modelIds.length === 0) return null;

    // Query Claudish for details on these specific models
    const { stdout } = await Bash("claudish --top-models --json");
    const modelData = JSON.parse(stdout);

    // Filter to user-specified models
    return modelData.models.filter(m => modelIds.includes(m.id));
  } catch (error) {
    console.warn("Could not read CLAUDE.md:", error.message);
    return null;
  }
}

Pattern 4: Graceful Fallback to Embedded Defaults

Use Case: Handle errors when Claudish is not available

Implementation:

// Define embedded defaults as fallback
const EMBEDDED_DEFAULT_MODELS = [
  {
    id: "x-ai/grok-code-fast-1",
    name: "Grok Code Fast 1",
    description: "Ultra-fast agentic coding",
    category: "coding",
    priority: 1
  },
  {
    id: "google/gemini-2.5-flash",
    name: "Gemini 2.5 Flash",
    description: "State-of-the-art reasoning and coding",
    category: "reasoning",
    priority: 2
  },
  {
    id: "openai/gpt-5.1-codex",
    name: "GPT-5.1 Codex",
    description: "Specialized for software engineering",
    category: "reasoning",
    priority: 3
  }
];

async function getRecommendedModels() {
  // 1. Check for user override
  const userModels = await readUserOverrideFromClaudeMd();
  if (userModels) return userModels;

  // 2. Try querying Claudish
  try {
    const { stdout } = await Bash("claudish --top-models --json");
    const modelData = JSON.parse(stdout);
    return modelData.models;
  } catch (error) {
    // 3. Graceful fallback
    console.warn("Could not query Claudish, using embedded defaults");
    console.warn(`Reason: ${error.message}`);
    return EMBEDDED_DEFAULT_MODELS;
  }
}

Pattern 5: Version Detection

Use Case: Check if Claudish supports JSON output (v1.2.0+)

Implementation:

async function checkClaudishVersion(): Promise<{ major: number; minor: number; patch: number } | null> {
  try {
    const { stdout } = await Bash("claudish --version");
    const match = stdout.match(/(\d+)\.(\d+)\.(\d+)/);
    if (!match) return null;

    return {
      major: parseInt(match[1]),
      minor: parseInt(match[2]),
      patch: parseInt(match[3])
    };
  } catch {
    return null;
  }
}

async function isClaudishJsonSupported(): Promise<boolean> {
  const version = await checkClaudishVersion();
  if (!version) {
    console.warn("Claudish not found");
    return false;
  }

  // JSON support added in 1.2.0
  const isSupported = version.major >= 1 && version.minor >= 2;

  if (!isSupported) {
    console.warn(`Claudish v${version.major}.${version.minor}.${version.patch} detected`);
    console.warn("JSON output requires Claudish v1.2.0+");
    console.warn("Upgrade: npm install -g claudish@latest");
  }

  return isSupported;
}

async function getRecommendedModels() {
  // Check Claudish version before querying
  const jsonSupported = await isClaudishJsonSupported();

  if (!jsonSupported) {
    console.warn("Falling back to embedded defaults");
    return EMBEDDED_DEFAULT_MODELS;
  }

  // Proceed with JSON query
  const { stdout } = await Bash("claudish --top-models --json");
  return JSON.parse(stdout).models;
}

Complete Example: Multi-Model Selection

Use Case: /review command selects multiple models for parallel code review

Implementation:

async function selectModelsForReview() {
  // Step 1: Get available models
  const availableModels = await getRecommendedModels(); // Uses patterns above

  // Step 2: Filter to coding/reasoning models
  const suitableModels = availableModels.filter(m =>
    m.category === "coding" || m.category === "reasoning"
  );

  // Step 3: Present selection UI to user (example)
  console.log("\nAvailable models for code review:\n");
  suitableModels.forEach((model, index) => {
    console.log(`${index + 1}. ${model.name}`);
    console.log(`   ${model.description}`);
    console.log(`   Category: ${model.category} | Cost: ${model.pricing.average}\n`);
  });

  // Step 4: User selects models (implementation depends on command)
  const selectedIndices = await promptUserForSelection();

  // Step 5: Return selected models
  return selectedIndices.map(i => suitableModels[i]);
}

async function getRecommendedModels() {
  // 1. User override
  const userModels = await readUserOverrideFromClaudeMd();
  if (userModels) return userModels;

  // 2. Claudish query (with version check)
  const jsonSupported = await isClaudishJsonSupported();
  if (jsonSupported) {
    try {
      const { stdout } = await Bash("claudish --top-models --json");
      return JSON.parse(stdout).models;
    } catch (error) {
      console.warn("Claudish query failed:", error.message);
    }
  }

  // 3. Fallback
  console.warn("Using embedded default models");
  return EMBEDDED_DEFAULT_MODELS;
}

Error Handling

Error 1: Claudish Not Installed

Detection:

try {
  await Bash("which claudish");
} catch {
  console.warn("Claudish not installed");
}

Fallback:

console.warn("Claudish not found. Using embedded default models.");
console.warn("To use dynamic model lists, install: npm install -g claudish");
return EMBEDDED_DEFAULT_MODELS;

Error 2: Claudish Version Too Old

Detection:

const version = await checkClaudishVersion();
const isOld = version && (version.major < 1 || version.minor < 2);

Fallback:

console.warn(`Claudish v${version.major}.${version.minor}.${version.patch} detected`);
console.warn("JSON output requires v1.2.0+");
console.warn("Upgrade: npm install -g claudish@latest");
console.warn("Falling back to embedded defaults");
return EMBEDDED_DEFAULT_MODELS;

Error 3: JSON Parse Error

Detection:

try {
  const data = JSON.parse(stdout);
} catch (error) {
  console.error("Invalid JSON from Claudish:", error.message);
}

Fallback:

console.error("Could not parse Claudish output");
console.error("Expected JSON format from: claudish --top-models --json");
console.warn("Falling back to embedded defaults");
return EMBEDDED_DEFAULT_MODELS;

Error 4: Empty Model List

Detection:

const data = JSON.parse(stdout);
if (!data.models || data.models.length === 0) {
  console.warn("No models returned from Claudish");
}

Fallback:

console.warn("Claudish returned empty model list");
console.warn("Try: claudish --models --force-update");
console.warn("Falling back to embedded defaults");
return EMBEDDED_DEFAULT_MODELS;

Error 5: Command Execution Failure

Detection:

try {
  const { stdout } = await Bash("claudish --top-models --json");
} catch (error) {
  console.error("Failed to execute Claudish:", error.message);
}

Fallback:

console.error("Could not execute: claudish --top-models --json");
console.error(`Error: ${error.message}`);
console.warn("Falling back to embedded defaults");
return EMBEDDED_DEFAULT_MODELS;

Best Practices

1. Always Provide Embedded Defaults

Why: Graceful degradation when Claudish unavailable

How:

const EMBEDDED_DEFAULT_MODELS = [
  // Minimum viable model list
  { id: "x-ai/grok-code-fast-1", name: "Grok", category: "coding" },
  { id: "google/gemini-2.5-flash", name: "Gemini", category: "reasoning" },
  { id: "openai/gpt-5.1-codex", name: "GPT-5 Codex", category: "reasoning" }
];

2. Check Version Before Using JSON

Why: Avoid errors with old Claudish versions

How:

const jsonSupported = await isClaudishJsonSupported();
if (!jsonSupported) {
  return EMBEDDED_DEFAULT_MODELS;
}

3. Support User Overrides

Why: Give users control over model selection

How:

// Always check CLAUDE.md first
const userModels = await readUserOverrideFromClaudeMd();
if (userModels) return userModels;

4. Log Clear Error Messages

Why: Help users understand and fix issues

How:

console.warn("Could not query Claudish, using embedded defaults");
console.warn("To fix: npm install -g claudish@latest");

5. Cache Results When Appropriate

Why: Avoid repeated Claudish queries in same session

How:

let _cachedModels: Model[] | null = null;

async function getRecommendedModels() {
  if (_cachedModels) {
    return _cachedModels;
  }

  // Query Claudish...
  const models = await queryClaudish();

  _cachedModels = models;
  return models;
}

6. Use Category Filtering

Why: Get relevant models only, faster response

How:

// Get coding models only (don't filter manually)
const { stdout } = await Bash("claudish --models coding --json");
const models = JSON.parse(stdout).models;
// All models are already filtered to category === "coding"

Anti-Patterns (Avoid These)

❌ Don't Parse Text Output

Wrong:

// Parsing text output is fragile and error-prone
const { stdout } = await Bash("claudish --top-models");
const lines = stdout.split("\n");
// ... complex parsing logic ...

Right:

// Use JSON output instead
const { stdout } = await Bash("claudish --top-models --json");
const models = JSON.parse(stdout).models;

❌ Don't Assume Claudish is Installed

Wrong:

// No error handling - will crash if Claudish not found
const { stdout } = await Bash("claudish --top-models --json");
const models = JSON.parse(stdout).models;

Right:

// Graceful fallback
try {
  const { stdout } = await Bash("claudish --top-models --json");
  return JSON.parse(stdout).models;
} catch {
  return EMBEDDED_DEFAULT_MODELS;
}

❌ Don't Maintain Duplicate Model Lists

Wrong:

// Hardcoded list that duplicates Claudish data
const MODELS = [
  "x-ai/grok-code-fast-1",
  "minimax/minimax-m2",
  "google/gemini-2.5-flash",
  // ... 20 more models ...
];

Right:

// Query Claudish dynamically, with minimal embedded fallback
const models = await getRecommendedModels(); // Queries Claudish
// EMBEDDED_DEFAULT_MODELS is minimal (3-5 models max)

❌ Don't Ignore Version Compatibility

Wrong:

// Assumes --json flag exists (added in v1.2.0)
const { stdout } = await Bash("claudish --top-models --json");

Right:

// Check version first
const jsonSupported = await isClaudishJsonSupported();
if (!jsonSupported) {
  return EMBEDDED_DEFAULT_MODELS;
}
const { stdout } = await Bash("claudish --top-models --json");

❌ Don't Filter After Fetching

Wrong:

// Get all models, then filter manually (inefficient)
const { stdout } = await Bash("claudish --top-models --json");
const allModels = JSON.parse(stdout).models;
const codingModels = allModels.filter(m => m.category === "coding");

Right:

// Let Claudish filter (more efficient)
const { stdout } = await Bash("claudish --models coding --json");
const codingModels = JSON.parse(stdout).models;

Testing Your Integration

Unit Test Example

import { describe, it, expect } from "bun:test";

describe("Claudish Integration", () => {
  it("should query Claudish and parse JSON", async () => {
    const models = await getRecommendedModels();

    expect(models).toBeDefined();
    expect(Array.isArray(models)).toBe(true);
    expect(models.length).toBeGreaterThan(0);

    const model = models[0];
    expect(model).toHaveProperty("id");
    expect(model).toHaveProperty("name");
    expect(model).toHaveProperty("category");
  });

  it("should fall back to embedded defaults if Claudish fails", async () => {
    // Mock Bash to throw error
    const originalBash = global.Bash;
    global.Bash = async () => { throw new Error("Command not found"); };

    const models = await getRecommendedModels();

    expect(models).toEqual(EMBEDDED_DEFAULT_MODELS);

    // Restore
    global.Bash = originalBash;
  });

  it("should filter by category", async () => {
    const models = await getRecommendedModelsByCategory("coding");

    expect(models.every(m => m.category === "coding")).toBe(true);
  });
});

Integration Test Example

import { describe, it, expect } from "bun:test";
import { exec } from "child_process";
import { promisify } from "util";

const execAsync = promisify(exec);

describe("Claudish CLI Integration", () => {
  it("should execute claudish --top-models --json", async () => {
    const { stdout } = await execAsync("claudish --top-models --json");
    const data = JSON.parse(stdout);

    expect(data).toHaveProperty("models");
    expect(data.models.length).toBeGreaterThan(0);
  });

  it("should filter by category via CLI", async () => {
    const { stdout } = await execAsync("claudish --models coding --json");
    const data = JSON.parse(stdout);

    expect(data.models.every(m => m.category === "coding")).toBe(true);
  });
});

Migration from Old Patterns

Before (Embedded Model Lists)

// Old pattern: Hardcoded model list
const REVIEW_MODELS = [
  "x-ai/grok-code-fast-1",
  "google/gemini-2.5-flash",
  "openai/gpt-5.1-codex"
];

function getModelsForReview() {
  return REVIEW_MODELS;
}

After (Claudish Integration)

// New pattern: Query Claudish dynamically
const EMBEDDED_DEFAULT_MODELS = [
  { id: "x-ai/grok-code-fast-1", name: "Grok", category: "coding" },
  { id: "google/gemini-2.5-flash", name: "Gemini", category: "reasoning" }
];

async function getModelsForReview() {
  // 1. User override
  const userModels = await readUserOverrideFromClaudeMd();
  if (userModels) return userModels;

  // 2. Claudish query
  try {
    const { stdout } = await Bash("claudish --models coding --json");
    return JSON.parse(stdout).models;
  } catch {
    // 3. Fallback
    return EMBEDDED_DEFAULT_MODELS;
  }
}

Benefits:

• ✅ Dynamic updates (no code changes needed)
• ✅ User overrides supported
• ✅ Graceful fallback
• ✅ Single source of truth (Claudish)

References

Related Documents:

• ai-docs/CLAUDISH_INTEGRATION_ARCHITECTURE.md - Overall architecture
• ai-docs/CLAUDISH_ENHANCEMENT_PROPOSAL.md - Claudish feature spec

Claudish Version Requirements:

• JSON output: Claudish v1.2.0+
• Category filtering: Claudish v1.2.0+
• Text output: All versions

External Resources:

• Claudish GitHub: https://github.com/MadAppGang/claudish
• Install: npm install -g claudish
• OpenRouter: https://openrouter.ai