Watt

watt.area21.io · 2 paid endpoints · listed 2026-10-27

Use when you need image embeddings or text embeddings in one 2048-dimension space for retrieval, RAG, semantic search, clustering, or dedup (Qwen3-VL-Embedding-2B, OpenAI-compatible). Batch up to 256 items per call, served 32 at a time. An x402 call is $0.002 when the request includes images, $0.001 for text-only. USDC on Base. 400 is a bad body, 413 is over 48 MiB, 429 means busy (Retry-After).

livelast check 43 h ago

100%valid x402 answers, 72 h

$0.00USDC received on Base, 7 days

0distinct payers, 7 days

50.0score (0-100)

Paid endpoints

Method	Endpoint	Price	Networks
POST	watt.area21.io/v1/chat/completions OpenAI-compatible chat completions: Qwen3.5 4B, Qwen3 1.7B and 0.6B on Watt's own fleet. Pay per call in USDC; the price is the messages' tokens plus max_tokens	$0.001	Base
POST	watt.area21.io/v1/embeddings Use when you need image embeddings or text embeddings in one 2048-dimension space for retrieval, RAG, semantic search, clustering, or dedup (Qwen3-VL-Embedding-	$0.002	Base

Latest checks

When	Endpoint	HTTP	ms	Result
43 h ago	watt.area21.io/v1/chat/completions	402	283	valid x402 v2 terms

Income on Base (7 days)

Day		Transfers	USDC
No USDC received on Base in the last 7 days (or the payout address is on another network).

Is this your API?

Add the live badge to your docs:

<a href="https://logicnodes.io/observatory/p/watt.area21.io"><img src="https://logicnodes.io/observatory/badge/watt.area21.io.svg" alt="x402 status"></a>

Claim it for free with x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.

Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/watt.area21.io