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api.trialbase-db.org
Search normalized clinical trials by registry, condition, intervention, sponsor, country, status, phase, study type, or free text.
$0.10 USDC
creator.halowerk.com
Requires shares totaling exactly 10,000 basis points, floors each proportional minor-unit allocation, and distributes leftover units by descending fractional remainder with a stable name tie-break. It performs arithmetic only and does not transfer funds, interpret contracts, withhold tax or resolve rights ownership.
$0.002000 USDC
gaming.halowerk.com
Enumerates feasible player pairs, ranks them by rating gap then worst latency, and greedily selects disjoint pairs. This is a transparent local pairing heuristic, not globally optimal team balancing, skill inference, anti-smurfing, or a live queue service.
$0.003000 USDC
agent-arcade.use.x402atlas.com
Chess Daily tactics puzzle — solve a deterministic UTC daily position from a pinned CC0 Lichess subset using legal UCI moves.
$0.005000 USDC
coingecko.use.x402atlas.com
OHLC candlestick data for crypto — daily open/high/low/close candles over 1-365 days for any coin by CoinGecko id, chart-ready.
$0.005000 USDC
stablecoinpulse.theaslangroupllc.com
Stablecoin peg tick — USDT, USDC, USDS, DAI, USDe, USD1 in ONE $0.01 call: live price, deviation from $1, 24h change, and a deterministic STABLE / WATCH / ALERT verdict per coin. Built for monitoring loops: call it every cycle, escalate to /api/depeg-watch for the single-coin deep read when a verdict is not STABLE. 60s freshness, cited to CoinGecko, no LLM in the path.
$0.01 USDC
gaming.halowerk.com
Selects objective framing, complication, and reward language from declared templates using a caller seed. It returns a bounded quest outline, not model-authored narrative, encounter balancing, unique lore, scripting, or playable content.
$0.003000 USDC
bizintel-api.hahavoid0.workers.dev
Queries current temperature, wind speed, and weather codes from the public Open-Meteo API.
$0.01 USDC
api.vaults.fyi
Retrieves a complete list of supported blockchain networks with their identifiers including network name, chain ID, and CAIP format identifier.
$0.002000 USDC
agent.massive.com
SEC 8-K filings text providing parsed content from current report filings. 8-K forms report material events such as earnings, acquisitions, executive changes, and other significant corporate events. Can't find what you're looking for? POST feedback to /feedback, no charge.
$0.01 USDC
x402.spendthebits.com
0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit — for every vetted stablecoin vault, or one by ?venue=<id|pool address>.
$0.005000 USDC
surf.cascade.fyi
Fetch a YouTube transcript from a video URL or 11-char id (video_id, also accepted as ref or url); returns a presigned download URL to the transcript
0.01 tokens
latamref.dev
Working days / next working day in a date range: weekends + gazetted public holidays
$0.002000 USDC
x402.spendthebits.com
Sanctions/scam screening verdict for one address (?address=, optional ?network=mainnet|testnet) plus whether it is a verified token contract STB recognises. The same screen that gates every send in the STB wallet.
$0.003000 USDC
afriref.dev
Working days / next working day in a date range: weekends + gazetted public holidays
$0.002000 USDC
x402.sniperx.fun
Get KOL trading activities on token (sorted by time descending)
0.02 tokens
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.
$0.005000 USDC
api.onesource.io
The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Backing-ratio history, joined against circulating supply as of each snapshot block. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
$0.02 USDC
x402.ottoai.services
Quick pulse check from crypto Twitter. Breaking news, trending narratives, and sentiment shifts at a glance.
$0.001000 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. Payment alone works: the paying wallet is the caller. An API key is optional. The call is scoped to the wallet behind that key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.
$0.001000 USDC
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