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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 ── 212 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).

x402 AI services with live status, name, description, endpoint count, cheapest per-request price, uptime (latest daily rollup), measured 30-day on-chain volume, distinct 30-day buyers, and supported networks. Click a column header to sort.
STATUS NAME DESCRIPTION EP FROM $/REQ UPTIME · DAILY ROLLUP VOL 30D BUYERS 30D NETWORKS
● Venice AI
Description
Uncensored, privacy-preserving LLM and image API (OpenAI-compatible). x402 wallet top-up model with 10 USDC prepay.
1 $10.00 100.00% $2.7k 76 Base/SOL
● 4-Protocol MCP Glama 5.0/5.0 TDQS, A2A Card & x402/MPP Schema Compiler
Description
Audits any live MCP server URL or GitHub repo on Glama's 6-dimension TDQS rubric and compiles drop-in 5.0/5.0 schemas, A2A Agent Cards, and x402/MPP configs.
1 $0.01 100.00% $0 0 Base
● x402 LLM Gateway
Description
OpenAI-compatible chat completions, paid per call in USDC on Base via x402. Send a chat messages array and receive the assistant reply. $0.01 per call, no account and no API key.
1 $0.01 100.00% $0 0 Base
● Work Brief
Description
Curated weekly one-page operator brief for AI agents: pick a focus (base_agents or id_seller_ops) and get 3-5 sourced facts with urls and dates, exactly 3 moves doable in 14 days, and one do_not. Hand source-checked weekly, not generated per request. 0.25 USDC on Base via x402; not charged if a brief can't be served.
1 $0.25 100.00% $0 0 Base
● RedRobotRouges IA Inference
Description
OpenAI-compatible chat completions served on local GPUs in Quebec, Canada. Pay $0.001 USDC on Base per call via x402; no API key or signup. Canadian data residency (Loi 25), French and English. Contact: [email protected]
1 $0.001 100.00% $0.003 3 Base
● Automated /llms.txt & Agent Documentation Context Compiler (llms-generator.agentdiet.dev)
Description
Crawls any documentation or SaaS site and compiles a standards-compliant /llms.txt manifest and JSON-LD schema bundle.
1 $0.01 100.00% $0 0 Base
● GEDX402
Description
Cloudflare Workers AI hub with x402 v2 USDC. Hero integrator funnel: scrape-lite, open-answer, cited-research-pack. https://gedx402.com/docs/integrator-quickstart
1 $0.003623 100.00% $32 65 Base
● Rooms by Aurmada – Agent Rooms
Description
Pay-per-call public chat rooms where AI agents and people meet. Any x402 wallet can search public rooms by topic ($0.001), read a room's recent messages or only the new ones since its last read ($0.001), and post a question, offer or update to the Rooms Lobby or another public room that takes agents ($0.002). No sign-up or API key: the paying wallet is the identity, shown with an agent wallet badge, and every post returns an Ed25519-signed receipt. Private rooms are never readable. Payment settles only after a successful answer, so errors and bad input are never charged. USDC on Base.
3 $0.001 100.00% $0 0 Base
● Hermie Agent Service
Description
Agent briefs, OSINT, and code deliverables. $0.01 USDC on Base via x402 v2 + Bazaar; facilitator xpay.sh.
3 $0.01 100.00% $0 0 Base
◐ AI Storefront Readiness Grader
Description
Audit an ecommerce storefront for AI-agent shopping readiness. Fetches the store server-side and runs 20 weighted checks, returning an A–F grade with prioritized fixes. Pay-per-call: $1.00 USDC per call via x402 on Base mainnet. No subscription, no account.
2 $1.00 100.00% $0 0 Base
● Stumble
Description
Watch a public web page and get a signed webhook the moment a condition becomes true (restock, price drop, appointment slot, launch, content change, HTTP status, a new URL in a sitemap, a new item in an RSS, Atom, or JSON feed); a half-cent recheck that says whether a page changed since the hash you hold; timed wakeups; a durable callback inbox for AI agents whose session ends before the world answers. $0.005 to $2.00 per purchase, USDC on Base or Solana, no account.
7 $0.005 100.00% $0 0 Base/SOL
● yesum agent-services
Description
Paid microservices for AI agents via x402 on Base. Seven endpoints: crypto price snapshots, micro-utilities, URL extraction, batch queries, research dossiers, deterministic acceptance-criteria grader, and page-change monitoring. Pay per call in USDC, no API keys.
6 $0.001 100.00% $0.56 10 Base
● kino402
Description
Pay-per-call video generation and text-to-speech over x402, no account and no API key. An unpaid request answers HTTP 402 with the exact quote for the body you sent, and that amount is what settles. Four video formats sold by brief rather than by prompt: UGC product video (a creator-style talking spot, $0.372 for 5s), product hero loop (a product photo becomes a seamless silent loop, $0.216), launch teaser (a 10s announcement with voice-over and music, $0.683) and faceless explainer (narrated b-roll, one shot per beat, $0.683). Each format has a prompt-only sibling that returns the compiled prompt and render plan for $0.005-$0.009. Raw model forwarding on /v1/generate covers text-to-video and image-to-video across Seedance, Kling and Hailuo, from a few cents to about $17 depending on model, duration, resolution and audio; renders return a job id and a free status URL. TTS is priced per character (about $0.00024) and returns mp3 synchronously. Dual-stack x402 v1 and v2, USDC on Base or Solana; /v1/models, /openapi.json and /llms.txt are free.
10 $0.005 100.00% $50 14 Base/SOL
● The Nervous System (agent governance x402 API)
Description
External governance layer for agent systems by Levels Of Self. Pay-per-call over x402: audit-chain verification, MCP config audit, legal-prep, bookkeeping. USDC on Base, no signup.
4 $0.005 100.00% $0.01 2 Base
● Cluster Protocol
Description
Pay-per-request AI inference gateway: chat completions, embeddings, image generation, transcription, text-to-speech, reranking and agent execution, paid per call in USDC on Base.
9 $0.0005 100.00% $14.2k 718 Base
● Grawwww Studio — AI Character Video & Image API
Description
x402-native AI character video and image generation. 5-second persistent-character videos ($0.99), still images ($0.10), and manifest/data ($0.02). USDC on Base, x402 v2. Already settled: 1 buyer, 0.02 USDC (2026-09-09).
2 $0.05 100.00% $0 0 Base
● Agent Council
Description
A judgement call instead of a lookup. Your question goes to 3-4 DIFFERENT AI models; each answers independently, then a chair returns one verdict with confidence, the consensus, the dissent that held, and what would flip it. Quick $0.01, deep $0.03 (2 rounds of cross-examination). Pay-per-call via x402 (USDC on Base). Free first call.
2 $0.01 100.00% $0 0 Base
● ArkBrowser API
Description
ArkBrowser is a browser automation API built for AI agents. Agents can browse websites, execute actions, extract content, maintain persistent sessions, take screenshots, use interactive browser takeover, create reusable automation profiles with Builder, and route browser sessions through Tor. ArkBrowser also provides managed USDC wallets for x402 payments, and the entire API can be used directly with curl or any standard HTTP client without requiring a dedicated SDK.
8 $0.001 100.00% $0 0 Base
● Maha Context Compiler and Deep Context Evaluation
Description
Two bounded x402 APIs on Base/USDC: Context Compiler ($0.001) selects and deduplicates source-linked passages into a token-budgeted context pack. Deep Context Evaluation ($0.01) additionally measures exact retention of caller-labelled evidence spans. Extractive selection and model-neutral token estimates, not factual verification, answer-quality certification or hallucination prevention. Request content is not stored.
2 $0.005001 100.00% $50 7 ARB/Base/POL
● DocEdge
Description
Converts a PDF, supplied by URL or as base64, into clean Markdown with extracted tables, metadata and an optional AI summary. $0.05 per document via x402 on Base or Solana.
1 $0.05 100.00% $0.89 ·sh 43 Base/SOL
● Laminarity Relay
Description
Pay-per-request LLM inference for AI agents, served by open-weight models (DeepSeek, GLM, MiniMax). OpenAI-compatible; paid in USDC via x402 — no signup, no API keys.
5 $0.001 100.00% $0.35 14 Base
● BrainChain
Description
Post a task with a brief and quality levels. Jev, BrainChain's decision model, hires one of five frontier models (Claude, GPT, Gemini, Grok or DeepSeek), grades the result and pays the model only for accepted work. Rejected work is refunded. 1 USDC on Base or 1 USDG on Robinhood Chain per task.
1 $1.00 100.00% $3 2 Base
● Floyd Coding Agent
Description
Autonomous coding agent: send a task description and an optional GitHub repo, and it analyzes the code, implements the change and opens a pull request. Priced at $0.50 USDC per task.
1 $0.50 100.00% $0.89 ·sh 43 Base/SOL
● Blixtworks img-categorize
Description
Vision toolbox for AI agents paid per call via x402 (USDC on Base): zero-shot image categorization with custom labels, image captioning, OCR text extraction, and CLIP embeddings. No accounts or API keys; free demo endpoint; buyers are never charged for failed requests.
4 $0.015 100.00% $0 0 Base
● Marz Greta-Lock Network — AI Text Human-Likeness Benchmark
Description
Scores how human AI-generated text sounds against 28 real personality profiles (EQ, formality, directness, hesitation, delay cadence). Free trial scoring; paid validated benchmarks, duels and job-specific coaching settle per-call via x402 — SOL on Solana (signature-proof, no custody) or USDC on Base, Polygon, Arbitrum and Avalanche.
2 $0.05 100.00% $0 0 Base
25 of 212 services ── category: AI ── all services
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