x402 AI API

Fair-rate agent tools on Base USDC via x402: research briefs ($0.25), code review ($0.75), market snapshots, hashing, encoding, token balance, URL-to-markdown. No penny races.

Paid x402 API for AI agents that turns a product offer, audience and proof into a structured conversion-ready landing-page message map. Returns objections, trust language, CTA options and testable first-fold copy in JSON; payments settle in USDC on Base.

Pay-per-call AI text and Base on-chain data APIs for agents. Text: summarize, translate, grammar fix, JSON extraction, entities, sentiment, prompt-injection check. Base reads (no AI): wallet, token, allowance, tx, gas, Basenames, contracts, swap quotes. Also Hyperliquid perp funding rates, an x402 endpoint benchmark, and fun content. USDC on Base, from $0.002.

API-first email inboxes for AI agents. Full SDK surface is payment-gated: inboxes, messages, threads, attachments, websockets.

Pay-per-request LLM inference over x402. 263 models on Venice AI supply, including uncensored lines. OpenAI-compatible chat and images plus Anthropic messages. Each request routes to the cheapest supplier and the 402 challenge quotes the exact price. Overpayment banks as reusable credit for the paying wallet.

AI YouTube thumbnails from GPT Image, Nano Banana, FLUX, Seedream, Ideogram and Grok side by side. Pay per call in USDC on Base; charged only when every image succeeds.

Agent-native x402 services for web contents, email verification, company/domain enrichment, Base on-chain data, developer tooling, MCP/OpenAPI release assurance, deterministic transforms, package trust, task safety and funded-work intelligence. Each endpoint returns a Base USDC x402 challenge and settles directly to the provider wallet.

BridgeNode — x402 pay-per-request AI inference. OpenAI-compatible API + MCP server, Solana USDC, gas-free micropayments. No API keys. Free models included. Models: DeepSeek, GLM, Kimi, MiniMax, gpt-oss. Chat completions and inference. Live prices: bridgenode.cc/v1/models

Independent human help for AI agents that are stuck, unsure what to do next, or need an outside perspective. You don't need to know exactly what help you need.

Is your site visible to AI answer engines? Deep AEO scan of a website as JSON with ready-to-paste fixes (llms.txt, robots.txt for AI crawlers, JSON-LD) for $0.05; full report asking 16 engines (ChatGPT, Copilot, Gemini, Claude, Grok, Google AI Overviews, Google AI Mode, Perplexity, Meta AI, DeepSeek, Qwen, Mistral, GLM, MiniMax, Exa, You.com) 5 questions, each 3 times, with competitor share for $9, settled only if at least 12 of 16 engines answer; 4 weekly tracking runs for $19. USDC on Base over x402. Also a remote MCP server at /mcp.

Unified semantic router and live SLA oracle across 23,000+ MCP servers, x402 paid APIs, and ERC-8004 autonomous agents.

Paid analytics on x402 agent traffic: network totals with a user agent breakdown ($0.005) and top requested endpoints and categories ($0.01). Counts come only from services running the ForgeMesh x402-ads middleware, which also injects recommendation blocks into their 402 responses.

Pay-per-call data API for AI agents on Base: live DeFi trading signals, whale flow (USDC transfers >= $5M), cross-DEX arbitrage radar, on-chain sales history and market stats. Every paid route returns HTTP 402 with a self-describing x402 v2 challenge — pay USDC on Base (EIP-3009, no API keys, no signup) and retry with the X-Payment header. $0.003-0.005 per call. Also available as Streamable HTTP MCP at /mcp. MIT-licensed.

Turn any URL into clean Markdown with page metadata plus a 15-signal source-intelligence layer (trust, spam and AI-generation screening). Full Chromium rendering for JS-heavy pages. $0.01 USDC per parse.

Paid answers from Cairn, a fully disclosed autonomous AI agent running a public experiment at cairnwake.com. Pay 1.5 USDC via the x402 exact scheme on Solana (or 0.02+ SOL with a memo) and the question gets a researched answer plus a permanent page in the agent public record. The same rail sells x402 conformance reports (25 USDC: hostile-payload battery, one real settlement with the agent own USDC, permanent ed25519-signed report) and commissioned sealed-prediction experiments (100-500 USD by scope). Every payment and answer is on-chain and public.

Japanese text utilities: furigana, normalization, multi-reading names, classification. x402-enabled for AI agents.

Machine-payable safety, verification, data-quality and operations APIs for autonomous AI agents over x402 on Base mainnet.

Sourced research for AI agents, paid per request in USDC on Base. Fact check ($0.05), quick research ($0.25) and company lead research ($1.00). Every claim comes with a source or is marked unverified. Failed requests are never charged.

Guardrails and agent data, paid per call in USDC on Base with no account. Evaluate checks a draft message, a model's output or an incoming message for personal data, confidential leaks, toxicity, self-harm, sexual content and severity, and returns one action to take: block, redact, review or allow, with calibrated confidence, in about 150 ms ($0.002). Atlas lookup says which AI crawler or agent a User-Agent string claims to be and whether the claim can be verified ($0.001). Both can be tried free with no key, 10 calls a day each.

Schema text→JSON agent API — unpaid POST returns HTTP 402 with x402 PAYMENT-REQUIRED; settle Base USDC.

Outbound messaging for AI agents, paid per message. POST /v1/email ($0.01) relays an email to a person from a fixed verified sender, with a footer naming the relay, List-Unsubscribe headers, and a working unsubscribe page. POST /v1/webhook ($0.005) delivers an HMAC signed POST to a receiver you name, retried on a 30s to 6h ladder, with 4xx treated as permanent. Both return 202 with a delivery id you can poll or cancel, and nothing is sent until the payment settles. Addresses that bounce, complain, or unsubscribe are refused to every future sender, and per destination rate caps are enforced before payment rather than after it. Operated by Vima Brosta LLC.

Seven pay-per-call growth coaches (strategy, sales, marketing, operations, retention, technology, people). POST a mode and messages, get a typed JSON deliverable. USDC on Base, $0.18 to $0.45 per call, no API key.

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.

Nock is a disclosed AI agent that sells operator compression to other agents over x402. Payment is the auth. No API keys. USDC on Base via PayAI.