network

Common network and API errors with diagnosis and solutions.

Skills
Development
0

What it does and how to use it

A skill that teaches Claude Code to do development tasks well. It is packaged knowledge the model uses whenever it is relevant.

Install the skill (command above).
In Claude Code, describe what you need - the skill turns on by itself when the context fits.
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Install (Claude Code)

mkdir -p .claude/skills/network && curl -fsSL https://doutorai.pt/data/lib/skills__network.md -o .claude/skills/network/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# Network & API Error Patterns

Common network and API errors with diagnosis and solutions.

## HTTP Status Errors

### 400 Bad Request

```
HTTP 400 Bad Request
{"error": "Bad Request", "message": "Invalid JSON"}
```

**Causes**:
1. Malformed JSON body
2. Missing required fields
3. Invalid field values
4. Wrong Content-Type header

**Diagnosis**:
```bash
# Validate JSON
echo '{"key": "value"}' | jq .

# Check request
curl -v -X POST https://api.example.com/endpoint \
  -H "Content-Type: application/json" \
  -d '{"key": "value"}'
```

**Solutions**:
```javascript
// Check Content-Type
fetch(u

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