50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
// Anthropic Claude Provider — raw fetch, no SDK
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import { LLMProvider } from './provider.mjs';
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export class AnthropicProvider extends LLMProvider {
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constructor(config) {
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super(config);
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this.name = 'anthropic';
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this.apiKey = config.apiKey;
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this.model = config.model || 'claude-sonnet-4-6';
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}
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get isConfigured() { return !!this.apiKey; }
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async complete(systemPrompt, userMessage, opts = {}) {
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const res = await fetch('https://api.anthropic.com/v1/messages', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'x-api-key': this.apiKey,
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'anthropic-version': '2023-06-01',
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},
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body: JSON.stringify({
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model: this.model,
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max_tokens: opts.maxTokens || 4096,
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system: systemPrompt,
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messages: [{ role: 'user', content: userMessage }],
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}),
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signal: AbortSignal.timeout(opts.timeout || 60000),
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});
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if (!res.ok) {
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const err = await res.text().catch(() => '');
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throw new Error(`Anthropic API ${res.status}: ${err.substring(0, 200)}`);
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}
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const data = await res.json();
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const text = data.content?.[0]?.text || '';
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return {
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text,
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usage: {
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inputTokens: data.usage?.input_tokens || 0,
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outputTokens: data.usage?.output_tokens || 0,
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},
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model: data.model || this.model,
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};
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}
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}
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