x402 AI API
x402 AI APIs: inference, generation, and model endpoints that accept x402 payments. Agents can discover, price, and call these services per request with no signup, paying onchain via the HTTP 402 flow.
By task: LLM API · Image Generation API · Text to Speech API · Transcription API · Sentiment Analysis API · Free LLM API
AI SERVICES ── 213 total ── for live status visit /status
STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.
VOL 30D and BUYERS 30D are a measured 30d floor across listed services, not an ecosystem total; an unmeasured service is not counted as zero.
·sh = shared payout address; volume attributed pro-quota (buyers left whole).
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| STATUS | NAME | DESCRIPTION | EP | FROM $/REQ | UPTIME · DAILY ROLLUP | VOL 30D | BUYERS 30D | NETWORKS |
|---|---|---|---|---|---|---|---|---|
| ● | Compacthost AI Tools | DescriptionPay-per-call generative AI tools for autonomous agents: full song generation (ACE-Step) and image generation (Chroma), settled in USDC on Base via x402. | 2 | $0.05 | 100.00% | $0 | 0 | Base |
| ● | RAGDiet — RAG Chunk De-Bloater & HTML Context Optimizer | DescriptionStrips noisy HTML/DOM/JSON boilerplate into dense, high-signal Markdown chunks for RAG pipelines and LLM context windows. | 2 | $0.001 | 100.00% | $0 | 0 | ARB/AVX/Base/POL |
| ● | cogDepot | DescriptionAnonymous B2B broker for AI-agent service exchanges. Agents list capabilities, negotiate deal terms, finalize, and receive a direct peer-to-peer channel. Paid per call over x402. | 2 | $0.01 | 100.00% | $0.53 | 3 | Base |
| ● | AI Agents Archive | DescriptionPaid handoff desk for AI agents on Base x402. Filing free. GET /api/discover?sort=savings. | 1 | $1.05 | 100.00% | $0 | 0 | Base |
| ● | GadgetHumans API | DescriptionAgent-facing utility API: 49 MCP tools and 55+ REST endpoints behind x402, including wx/fx/crypto data, QR and JSON tooling, web research, and OpenAI-compatible chat completions. Pay-per-call in USDC on Base, no signup, no API key. | 27 | $0.001 | 100.00% | $0.08 | 8 | Base/SOL |
| ● | x402vid — AI Intelligence for YouTube Videos | DescriptionYouTube intelligence rail: 18 paid tools ($0.01-$1.00 USDC on Base via x402) — transcripts, AI-ranked search, niche/shorts/thumbnail/channel reports — plus OpenAI-compatible answers at POST /api/v1/chat/completions ($0.05, model x402vid-youtube). Free health_check and video_preview taster. | 4 | $0.01 | 100.00% | $0.01 | 1 | Base |
| ● | 200 | DescriptionReliability layer for x402 data providers. Routes each paid call to whichever provider is currently most reliable and scores them on delivery, not just payment. | 2 | $0.0001 | 100.00% | $0 | 0 | Base |
| ● | AgentLair | DescriptionAgentLair is identity, trust, and infrastructure for AI agents. Anonymous x402-payable endpoints: pay 0.001 USDC for an A2A AgentCard trust audit, 0.005 USDC to resolve an agent handle to its DID + JWKS, 0.01 USDC to query a trust score, or 0.0001 USDC to submit behavioral events. No API key required — payment is authentication. | 5 | $0.0001 | 100.00% | $0.03 ·sh | 3 | Base |
| ● | Skuuy Read | DescriptionURL to clean markdown reader with x402 micropayments. Free tier: 100 reads per day; $0.005 USDC per request on Base after quota. | 1 | $0.001 | 100.00% | $0.02 | 1 | Base |
| ● | x402 Text Summarization API | DescriptionExtractive text summarization service via x402 protocol. Accepts up to 8 sentences (max 4000 chars), returns a 2-sentence summary. $0.01 USDC per request on Base chain. Rate limited at 70 req/min. | 1 | $0.01 | 100.00% | $0 | 0 | Base |
| ● | Stratly | DescriptionPay-per-call x402 microservices on Base. /v1/extract ($0.01 USDC): extracts emails, phone numbers, dates, monetary amounts and URLs from plain text as validated JSON. /v1/verdict ($0.02 USDC): deterministic, rule-based Base token-risk verdict for one 0x address — explicitly not an LLM; a fixed weighted rubric over live Base RPC probes. x402 v1+v2 dual-stack, scheme exact. Single-use redemptions. | 2 | $0.01 | 100.00% | $0.12 | 5 | Base |
| ◐ | Ausca | DescriptionMetered agent infrastructure services: document OCR, document analysis, media transcription, browser sessions, and agent inboxes. Pay per call with x402 v2, no account or API keys, receipt-backed results. | 7 | $0.05 | 100.00% | $0 | 0 | Base |
| ● | Blue Cap Machine Commerce | DescriptionMachine-readable deterministic utilities for evidence verification, schema validation, and cryptographic hashing, purchasable via x402 v2 on Base using USDC. | 3 | $0.01 | 100.00% | $0.08 | 7 | Base |
| ● | StableBrowser | DescriptionRemote browser sessions for AI agents, priced at 0.10 USDC on Base per session. Once a session is created, actions on it (navigate, act, extract, observe, screenshot) are included. Built on Browserbase and Stagehand. | 1 | $0.10 | 100.00% | $4 | 13 | Base |
| ● | Arch Tools | Description63 AI-agent tools behind one API: per-call USDC via x402 v2 on Base and 8 more chains, prepaid credits, and an MCP endpoint (https://archtools.dev/mcp). | 50 | $0.01 | 100.00% | $2 | 12 | Base/POL |
| ● | AEO Audit API | DescriptionAnswer Engine Optimization audit — scores any website visibility in AI assistants (ChatGPT, Claude, Perplexity, Gemini). Returns structured JSON with score 0-100, grade A-F, section breakdowns, issues, and actionable recommendations. Checks structured data, llms.txt, FAQ schema, semantic coverage, and agent-readability. | 1 | $0.25 | 100.00% | $0.03 ·sh | 3 | Base/BSP |
| ● | SwarmMemo agent offerings (Pythia oracle) | DescriptionPaid calls to agents on SwarmMemo, the message board for agent swarms. Each offering is a signed, priced task an agent provides; the caller pays the provider directly over x402 (v2, exact, USDC on Base) and polls for the answer. First listed: Pythia, a forecasting ensemble answering a question with a probability (5 USDC). | 1 | $5.00 | 100.00% | $0 | 0 | Base |
| ● | Jev Structured Evaluation (jev-x402) | DescriptionThird-party wrapper of the Jev (System One) model by TypeSafe: send a state plus typed questions and get calibrated probabilities and confidence for each. | 1 | $0.001 | 100.00% | $2 | 13 | Base |
| ● | AX1 Console | DescriptionAI-written verdict on a Base token contract: onchain metrics, a plain-language summary and a shareable card. The operator labels it entertainment, not trading advice. | 1 | $0.02 | 100.00% | $9.9k | 4870 | Base |
| ● | Old2New Agent API | DescriptionRecipe transformation and recipe-photo generation API for dietary restrictions and health goals. | 2 | $0.10 | 100.00% | $0 | 0 | Base |
| ● | QuickSilver Pro | DescriptionPay-per-use USDC top-up for OpenAI-compatible LLM inference. Pay a fixed denomination over x402 and receive a prepaid OpenAI-compatible API key — no account, no card; the key meters per-token against the prepaid balance. Base mainnet, Coinbase CDP facilitator. | 3 | $1.00 | 100.00% | $0 | 0 | Base |
| ● | GPUOps AI Inference | DescriptionOpenAI-compatible AI inference API with 63 models including Llama 3.3 70B Mistral Qwen Phi DeepSeek Flux image gen and TTS. Pay-per-call with USDC on Base via x402. No API keys required agents pay and call directly. From 0.001 per call. | 4 | $0.001 | 100.00% | $0 | 0 | Base |
| ● | LaunchCheck Website Signals | Description16 deterministic website checks for deployment QA: SEO, accessibility, security headers and HTML size. JSON evidence from one public HTML page. x402 v2 exact EIP-3009, 0.25 USDC on Base. No JavaScript execution or crawl. | 1 | $0.25 | 100.00% | $0 | 0 | Base |
| ● | a2apay Agent Query | DescriptionAI answers served from ICP canisters: submit a prompt and get a response, paid per query with no account. Also exposes an agent memory endpoint. | 2 | $0.028 | 100.00% | $36 | 2 | Base |
| ● | Ephemeral Cloud | DescriptionDisposable infrastructure for autonomous agents, paid per use in USDC (x402 v2 on Base), no accounts or API keys. WAIT: /v1/watch polls any public URL for up to 30 days until a condition holds (text, JSON field, or any item in a JSON list passing field tests), re-arms in repeat mode, and delivers to a capability-token mailbox, a challenge-verified callback URL, or a human's email address ($0.25/day, $1/week, $3/month; first 10-minute watch per IP free). RECEIVE: /v1/webhooks temporary inbound webhooks ($0.01, first per IP free). WAKE: /v1/callbacks delayed wake-ups ($0.01). MCP server: npx -y ephemeral-cloud-mcp. | 3 | $0.01 | 100.00% | $0 | 0 | Base |
25 of 213 services ── category: AI ── all services
Measurement methodology
Page snapshot as of .