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apollo-common-errors

Diagnose and fix common Apollo.io API errors.

Skill by niels-kwg

IndexedMIT
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Diagnose and fix common Apollo.io API errors. Use when encountering Apollo API errors, debugging integration issues, or troubleshooting failed requests. Trigger with phrases like "apollo error", "apollo api error", "debug apollo", "apollo 401", "apollo 429", "apollo troubleshoot".

Use cases: backend

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/apollo-common-errors

Tools it pre-approves 3

From allowed-tools in SKILL.md: the agent may use these without asking you each time.

  • Read,
  • Grep,
  • Bash(curl:*)

What's inside

Skill name
apollo-common-errors
Description
Diagnose and fix common Apollo.io API errors. Use when encountering Apollo API errors, debugging integration issues, or troubleshooting failed requests. Trigger with phrases like "apollo error", "apollo api error", "debug apollo", "apollo 401", "apollo 429", "apollo troubleshoot".
License
MIT
Allowed tools
Read,, Grep,, Bash(curl:*)
Instructions
315 lines in SKILL.md · view on GitHub

Before installing

  • Pre-approves some shell commands
  • Instructions call the network

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Apollo Common Errors

## Overview
Comprehensive guide to diagnosing and fixing common Apollo.io API errors with specific solutions and prevention strategies.

## Error Reference

### 401 Unauthorized

**Symptoms:**
```json
{
  "error": "Unauthorized",
  "message": "Invalid API key"
}
```

**Causes:**
1. Missing API key in request
2. Invalid or expired API key
3. API key revoked by admin
4. Wrong API key (sandbox vs production)

**Solutions:**
```bash
# Verify API key is set
echo $APOLLO_API_KEY | head -c 10

# Test API key directly
curl -s "https://api.apollo.io/v1/auth/health?api_key=$APOLLO_API_KEY" | jq

# Check key in Apollo dashboard
# Settings > Integrations > API > View/Regenerate Key
```

**Prevention:**
```typescript
// Validate API key on startup
async function validateApiKey() {
  try {
    await apollo.healthCheck();
    console.log('Apollo API key valid');
  } catch (error) {
    console.error('Invalid Apollo API key - check APOLLO_API_KEY');
    process.exit(1);
  }
}
```

---

### 403 Forbidden

**Symptoms:**
```json
{
  "error": "Forbidden",
  "message": "You don't have permission to access this resource"
}
```

**Causes:**
1. API feature not available in plan
2. User role doesn't have access
3. IP restriction blocking request
4. Attempting to access another account's data

**Solutions:**
```typescript
// Check plan features before calling
const PLAN_FEATURES = {
  basic: ['people_search', 'organization_enrich'],
  professional: ['sequences', 'bulk_operations'],
  enterprise: ['advanced_search', 'custom_fields'],
};

function checkFeatureAccess(feature: string, plan: string): boolean {
  return PLAN_FEATURES[plan]?.includes(feature) ?? false;
}
```

---

### 422 Unprocessable Entity

**Symptoms:**
```json
{
  "error": "Unprocessable Entity",
  "message": "q_organization_domains must be an array"
}
```

**Causes:**
1. Invalid request body format
2. Missing required fields
3. Wrong data types
4. Invalid enum values

**Common Fixes:**

```typescript
// WRONG: String instead of array
const wrong = { q_organization_domains: 'apollo.io' };

// CORRECT: Array format
const correct = { q_organization_domains: ['apollo.io'] };

// WRONG: Number instead of string
const wrong2 = { per_page: '25' };

// CORRECT: Number type
const correct2 = { per_page: 25 };
```

**Validation Helper:**
```typescript
import { z } from 'zod';

From niels-kwg/toolkit, MIT.

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Last commit (this folder)
Mar 18, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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apollo-common-errors skill. Agent Mart. https://agentmart.dev/skills/niels-kwg-apollo-common-errors (last updated 2026-10-24)