context-engineering-intro/use-cases/mcp-server/PRPs/ai_docs/claude_api_usage.md

Example usage of the Anthropic API for Claude (model and API key are both environment variables)

const response = await fetch('https://api.anthropic.com/v1/messages', { method: 'POST', headers: { 'Content-Type': 'application/json', 'x-api-key': this.apiKey, 'anthropic-version': '2023-06-01' }, body: JSON.stringify({ model: this.model, max_tokens: 3000, messages: [{ role: 'user', content: this.buildPRPParsingPrompt(prpContent, projectContext, config) }] }) });

if (!response.ok) { throw new Error(Anthropic API error: ${response.status} ${response.statusText}); }

const result = await response.json(); const content = (result as any).content[0].text;

// Parse the JSON response const aiTasks = JSON.parse(content);