Resource Clients

KV

Imported from "void/kv".

kv

Typed JSON-aware client for the inferred KV binding.

import { kv } from 'void/kv';

await kv.put('settings', { theme: 'dark' });
const settings = await kv.get<{ theme: string }>('settings');

Key exports: kv, createKV(namespace), KVClient, KVMap, PutOptions, ListOptions.

kv.map(prefix) creates a typed namespaced view where every key is stored under prefix:.

Storage

Imported from "void/storage".

storage

Default R2 bucket proxy for the inferred STORAGE binding.

import { storage } from 'void/storage';

await storage.put('avatars/alice.png', file);
const object = await storage.get('avatars/alice.png');

Key exports: storage, createStorage(bucket).

AI

Imported from "void/ai".

ai

Typed AI client for Cloudflare AI models and provider-native AI Gateway requests.

import { ai } from 'void/ai';

const result = await ai.run('@cf/meta/llama-3.3-70b-instruct-fp8-fast', {
  messages: [{ role: 'user', content: 'Summarize this release note.' }],
});

const response = await ai.provider('openai').fetch('/chat/completions', {
  body: {
    model: 'gpt-4o',
    messages: [{ role: 'user', content: 'Summarize this release note.' }],
  },
});

Key exports: ai, VoidAi, provider request types. See AI for provider setup and streaming examples.

AI methods return promises and reject usage limits with UsageLimit from void/limits. Void routes and Pages actions return a structured HTTP 429 for uncaught limits. See usage limits for optional instanceof UsageLimit handling.

Provider keys

Default secret names for ai.provider(). Use apiKeyEnv to choose another name.

Provider prefix	Env var
openai	OPENAI_API_KEY
anthropic	ANTHROPIC_API_KEY
google-ai-studio	GOOGLE_API_KEY
deepseek	DEEPSEEK_API_KEY
groq	GROQ_API_KEY
mistral	MISTRAL_API_KEY
grok	GROK_API_KEY
openrouter	OPENROUTER_API_KEY
perplexity	PERPLEXITY_API_KEY
cohere	COHERE_API_KEY
cerebras	CEREBRAS_API_KEY
huggingface	HUGGINGFACE_API_KEY
replicate	REPLICATE_API_KEY
baseten	BASETEN_API_KEY
cartesia	CARTESIA_API_KEY
deepgram	DEEPGRAM_API_KEY
elevenlabs	ELEVENLABS_API_KEY
fal	FAL_API_KEY
ideogram	IDEOGRAM_API_KEY
parallel	PARALLEL_API_KEY

ISR

Imported from "void/isr".

revalidate(options)

Revalidate ISR-cached pages on demand. In local development this is a no-op because there is no edge ISR cache.

import { revalidate } from 'void/isr';

await revalidate({ paths: ['/', '/blog/hello'] });
await revalidate({ all: true });

Signature:

function revalidate(options: { paths?: string[]; all?: boolean }): Promise<void>;

Logging

Imported from "void/log".

logger

Structured logger that emits one JSON line per call so deployed logs can be filtered by message and fields.

import { logger } from 'void/log';

logger.info('checkout completed', { orderId, userId });
logger.error('webhook failed', { provider: 'stripe', attempt: 3 });

Methods: logger.error(message, fields?), logger.warn(message, fields?), logger.info(message, fields?).