kronossignals.com
Forward liquidation cluster map + recent prints for all 17 crypto assets. Part A: estimated liq price levels for 5x/10x/25x/50x leverage bands, modeled from open interest and mark price — no new upstream source. Part B: real liquidation prints from OKX public API (no auth). Returns cluster map, nearest_long/short clusters, squeeze_bias, and honest disclaimers. Supports BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT/HYPE-USD. Pay-per-call via x402.
$0.02 USDC
lionx402.com
LION Social Signal Intel (HN + Reddit keyless attention/trend)
$0.004000 USDC
signals.nsgoods.org
Market-regime state (RISK_ON / RISK_OFF) from a provable chain, plus whether it changed since the regime you last saw. Cheap poll endpoint for AI agents to react to regime flips (USDC on Base). Free preview: GET /signals/preview An unavailable regime feed returns 503; you are never charged for an error.
$0.02 USDC
crypto.openverbs.com
Total value locked (USD) for one DeFi protocol by DefiLlama slug or name (e.g. "aave-v3", "lido", "uniswap-v3"): current TVL, per-chain TVL breakdown, 1h/1d/7d TVL change, category, chains, token symbol and market cap. Optional `chain` also returns that chain's TVL for the protocol. Unknown names return `found:false` with slug `suggestions`.
$0.001000 USDC
brasil-dados-api.onrender.com
Brazil IPCA consumer inflation: last 12 monthly readings and 12-month accumulated. Central Bank of Brazil.
$0.005000 USDC
vibesprings.net
Live cryptocurrency asset price tracker and market intelligence feed. Access real-time spot prices, daily percentage changes, 24-hour volume, total circulating supply, and historical records for top tokens. Supports custom coin listings, multi-currency quote pairs (USD, EUR, GBP, BTC, ETH), and complete global cryptocurrency market cap summaries.
$0.005000 USDC
api.solenrich.com
Tokens ranked by how fast agent attention is speeding up — query velocity change across three consecutive windows, overlaid with price change over the same window. Divergence classes: early_signal (attention accelerating, price flat), confirmed_momentum, distribution_risk (attention cooling while price pumps), fading. Proprietary: derived from SolEnrich's own agent query stream, not market volume. sample_quality reports signal density honestly.
0.02 tokens
api.solenrich.com
Jupiter Gacha (Collector Crypt) tokenized-card pack EV scan. For each pack machine, computes net-of-exit-mechanics EV: gross insured EV vs the guaranteed instant-buyback floor (85-93%% of insured, <=72h) vs a marketplace sale (insured value minus 2%% fee, fill-risk). Returns a POSITIVE_EV / HOUSE_EDGE / NEGATIVE_EV verdict per machine plus rare+epic stock share, ranked by the chosen exit path. All inputs optional.
0.02 tokens
x402-mcp.onrender.com
NYC HPD violations address check: is this property licensed / HPD-registered, and are there open Housing Maintenance Code violations? Property due diligence agent for New York City multi-dwelling housing compliance open data. GET ?address= (house + street, optional borough) → registration window, BIN/block/lot, recent HMC violations JSON. Tenant screening, landlord DD.
$0.01 USDC
usaref.dev
Working days / next working day in a date range: weekends + gazetted public holidays
$0.002000 USDC
crypto.openverbs.com
Crypto & token prices: live USD spot price for one or more coins/tokens by coin id — market coins (e.g. "coingecko:bitcoin", "coingecko:ethereum") or any ERC-20 by contract (e.g. "ethereum:0xdAC17..."). Real-time bitcoin, ethereum and token price feed from an open, redistribution-OK source. Unknown ids are returned in `notFound`.
$0.001000 USDC
api.solenrich.com
What to launch on StonkFun, and against what. Per quote asset: coins, launches (24h / 7d), share trading today, share paying holders today, survival past day 3, volume, median holders and mcap, 100 vs 300 bps tax mix with trading and paying rates, crowding, and a 0-100 demand score. Plus overall stats and plain recommendations. Sort by demand, survival, volume, launches, or paying. Milliseconds.
0.02 tokens
agentdataapi.onrender.com
Complete structured package for one illustrated classic of early science/engineering (1588-1748): verified public-domain scan, full metadata, curated description, full-text OCR link, IIIF manifest, and page-image URL template. Works: Ramelli machines 1588, Agricola De re metallica 1621, Hooke Micrographia 1665, Newton Principia 1687 & Opticks 1730, Euler Introductio 1748. Param: ?id=<work_id>
$0.02 USDC
api.solenrich.com
stonk-yield for up to 25 reward coins in one call: 7d, 30d and lifetime holder yield per coin (rewards in the quote asset, priced in USD, over average market cap), annualized with caution flags, plus reward asset, market cap, holders and last payout. Pick coins by mints or by the stonk-screener filters. From the 10-minute index, in milliseconds.
0.05 tokens
api.statemind.ai
Check Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.
$0.01 USDC
api.loyalspark.online
Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. On the paid retry send the payment together with header x-api-key: lsk_... or Authorization: Bearer lsk_.... A payment without a live key is not charged. Read key, no browser: POST https://api.loyalspark.online/x402-gateway/register-agent. HTTP 402 is $0.01 USDC on Base. Pay it and do not send an API key. You receive lsk_ once, scope read only: list your programs, rewards, balances, and analytics. That key cannot mint, deploy a program, create rewards, or trade. A new wallet gets a 45-day Pro trial (5 agents, 10,000 calls/month), then Free (1 agent, 200 calls/month, 1,000 tokens minted/month, 1.25% mint fee) unless that wallet pays. The $0.01 is the call price, not a subscription. No free seat returns 403 before any charge. Write scopes (mint, create_program, manage_rewards, trade) use the same plan: dashboard https://loyalspark.online/merchant → AI Agents, or free SIWE — POST https://api.loyalspark.online/siwe-nonce, sign Chain ID 8453 with the exact phrase 'Register Loyal Spark merchant agent', then POST {message, signature, name, scopes} to https://api.loyalspark.online/agent-register-siwe. Look first with no key: GET https://api.loyalspark.online/x402-gateway/public-programs ($0.001, active programs, not your own list). Guide: https://loyalspark.online/.well-known/skills/00-getting-started.md The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.
$0.01 USDC
quotient-api-gateway.onrender.com
Use this to read published Quotient signals. Sports signals return one game-level pick and markets[] with every linked venue listing, its signal_side, price, and availability. No venue is primary or preferred. Missing quotes do not hide listings. Venue filters find games available there and retain all listings. Non-sports signals retain their market, pricing, and lifecycle fields.
$0.01 USDC
agentforge-taupe.vercel.app
Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before you spend on a real endpoint. Category: infra.
$0.001000 USDC