Discover / x402engine.app

x402engine

■ Challenge detected

x402engine — Premium text-to-speech with ElevenLabs — ultra-realistic voices, multilingual support, custom voice IDs

x402
Base
EVM chain 4326
Solana
USDC
AI

Listed price: $0.02
Challenge detected: 9 of the last 9 checks
Median response: 172 ms
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402engine.app/api/tts/elevenlabs
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

106 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://x402engine.app/api

POST/llm/llama-4-maverickNo price listedx402engine — Meta's latest open model — 1M context, strong multilingual and reasoning at very low cost
POST/llm/deepseek-v3.2No price listedx402engine — DeepSeek's latest flagship model — improved reasoning and coding over V3 at same low cost
GET/ens/reverseNo price listedReverse-resolve an Ethereum address to its ENS name
GET/crypto/historyNo price listedx402engine — Historical price, market cap, and volume data for any coin
POST/llm/gpt-5.4No price listedx402engine — OpenAI's unified flagship model — 1M context, computer use, top-tier across all tasks
POST/llm/claude-sonnet-4.6No price listedx402engine — Anthropic's latest balanced model — excellent coding, reasoning, and creative writing
POST/llm/gpt-6-astraNo price listedGPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon
POST/code/runNo price listedx402engine — Run code in isolated sandbox — Python, JavaScript, Bash, R (up to 5 min)
POST/token/pricesNo price listedx402engine — Real-time DEX-derived token prices with OHLC data — up to 200 tokens per request
POST/llm/glm-5.3No price listedx402engine — GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves
POST/image/nano-bananaNo price listedGoogle's fast, high-quality image generation with aspect ratio control and optional web search
POST/llm/mistral-large-4No price listedx402engine — Mistral Large 4 is a frontier multimodal (text and image input) model from Mistral AI built for reasoning, coding, and agentic workloads. It offers a 512K-token context window with up...
POST/llm/claude-opus-5.5No price listedx402engine — Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...
POST/llm/gpt-6-lunaNo price listedx402engine — GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...
POST/llm/gpt-5.6-luna-proNo price listedx402engine — OpenAI's higher-compute Luna tier for efficient long-context reasoning
POST/llm/inklingNo price listedx402engine — Thinking Machines' multimodal model for text, image, and audio understanding
GET/token/metadataNo price listedx402engine — Token/asset metadata — name, symbol, decimals, chain info
POST/llm/minimax-m2.7No price listedx402engine — MiniMax's latest model — improved reasoning and generation with 204k context
POST/llm/grok-4.7No price listedx402engine — Grok 4.7 is SpaceXAI's flagship model for coding, agentic tasks, and knowledge work, succeeding Grok 4.6. It is particularly strong at long-running software engineering tasks, verifying its own work, and...
POST/llm/qwen3.8-omni-flashNo price listedx402engine — Qwen3.8 Omni Flash is an omni-modal reasoning model from Alibaba, the first Qwen model built around agentic capabilities with native audio-video understanding. It is suited for audio-video analysis and summarization,...
POST/llm/claude-haiku-5.5No price listedx402engine — Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...
POST/llm/gpt-5.3-codexNo price listedx402engine — OpenAI's SOTA agentic coding model — best-in-class for software engineering and code generation
POST/llm/qwen-coderNo price listedx402engine — Alibaba's code-specialized model — optimized for code generation, review, and technical tasks
POST/llm/minimaxNo price listedx402engine — MiniMax's efficient model — fast and affordable for everyday tasks
POST/llm/deepseekNo price listedDeepSeek's flagship chat model — strong open-source reasoning and coding at low cost

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 106 listed endpoints. Next endpoints First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402engine.app

Recent checks

3 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	Challenge detected	200	172ms
15 Oct, 11:37 UTC	Challenge detected	200	134ms
14 Oct, 00:19 UTC	Challenge detected	200	232ms
12 Oct, 00:34 UTC	Challenge detected	200	186ms
10 Oct, 10:04 UTC	Challenge detected	200	230ms
9 Oct, 06:42 UTC	Challenge detected	200	133ms
8 Oct, 03:32 UTC	Challenge detected	200	168ms
7 Oct, 03:32 UTC	Challenge detected	200	480ms
3 Oct, 17:05 UTC	Challenge detected	402	145ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for x402engine?

Its listed price is $0.02.

What payment terms does x402engine advertise?

The listing advertises x402, Base, EVM chain 4326, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402engine listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

Something wrong on this page? Tell us.