| OnchainPulse Exit-depth / sell-impact estimator for Uniswap-v3-compatible AND v2-style (x·y=k) pools on 11 chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, Monad, World Chain, HyperEVM, Robinhood Chain): live pool state read from the contract (v3 sqrtPrice + in-range liquidity, or v2 reserves); tokens sellable at 1/2/5/10/25% price impact in tokens, quote and USD, %-of-supply framing, manipulated-liquidity cross-check vs DexScreener. Deterministic pool math, no LLM — the "can I actually g | theaslangroupllc.com | - | $0.02 | listed |
| OnchainPulse Live USDC yield panel on Base, read DIRECTLY from chain state — Aave v3, Compound v3, Moonwell, Euler v2 supply APY from onchain rate views, plus the six largest Morpho (MetaMorpho) USDC vaults with REALIZED trailing APY from ERC-4626 share-price deltas (archive reads, net of fees — not a vendor estimate). Optional: any custom ERC-4626 vault address on Base. Built for yield agents (Sail/Sailor, rebalancers, treasury bots) that need verify-before-acting numbers. | theaslangroupllc.com | - | $0.02 | listed |
| OnchainPulse Live launch feed for Uniswap's Liquidity Launchpad on Robinhood Chain — every UERC20 token minted through the canonical UERC20Factory, newest first, read straight from chain state (the launchpad has no front end or API of its own). Per launch: token address, launch time, block, and for the newest: name, symbol, holder count, supply. Includes the canonical launchpad contract addresses and the safety facts common to all UERC20 tokens (fixed supply, no owner, no mint, no taxes by construction). Pai | theaslangroupllc.com | - | $0.01 | listed |
| OnchainPulse RECEIPTS — the full token due-diligence report in one call, data versus vibes: contract-safety facts (honeypot sell simulation, taxes, mint/owner powers, LP lock), labeled holder-concentration map, exit-depth from live v3/v2 pool math, market context, launch provenance (Robinhood Chain Doppler registry), plus claim-by-claim narrative-consistency vs the project site when its URL is passed. Structured checks, checks-passed count, explorer citations, no scores, no advice. Solana + 8 EVM chains. | theaslangroupllc.com | - | $0.35 | listed |
| OnchainPulse Holder-concentration map for any token — Solana + 8 EVM chains incl. Base & Robinhood Chain: top holders with LP-pool / locker / burn / contract labels, largest-wallet and top-10 share excluding LP & burn, % of supply in LP or lockers, % burned, % sitting in unlabeled contracts, creator & owner balances, insider-cluster detection (Solana). The "who actually holds this thing" layer of token due diligence, as observable facts with per-wallet breakdown. Deterministic, sub-second, no LLM. | theaslangroupllc.com | - | $0.02 | listed |
| OnchainPulse Token liquidity and momentum snapshot, half a cent: live DEX liquidity in USD, price, market cap, pair age, 1h/24h volume, buy-vs-sell transaction ratio, price change — the raw DexScreener read for any EVM token, one source, no fusion. Base, Ethereum, BSC, Arbitrum, Polygon, Optimism, Avalanche. Cheapest pre-trade depth check; upgrade to /api/evmtoken ($0.015) for the fused safety verdict or /api/exit-depth for sell-impact modeling. | theaslangroupllc.com | - | $0.005 | listed |
| One Call Market Snapshot API One-call market snapshot: BTC/ETH/SOL spot prices with 24h change plus the Crypto Fear & Greed index. The cheapest way for an agent to establish market context. | onrender.com | - | $0.002 | listed |
| One Call Market Snapshot API One-call market snapshot: BTC/ETH/SOL spot prices with 24h change plus the Crypto Fear & Greed index. The cheapest way for an agent to establish market context. | defi-signals.org | - | $0.002 | listed |
| One Call Market Snapshot For A Crypto Asset API One-call market snapshot for a crypto asset: fear & greed sentiment, perpetual funding rate, open interest and recent liquidations aggregated in a single response. One call replaces 4+ separate indicator lookups. Built for AI trading agents and market-monitoring bots that need the full derivatives picture before acting. market overview, sentiment, funding rate, open interest, liquidations, derivatives snapshot Accepts payment on Base or Solana — either network works. | x402node.dev | - | $0.05 | listed |
| One Call Us Company Financial Snapshot API One-call US company financial snapshot: revenue, growth, net income, margin, ROE, profitability from SEC XBRL. Query: ?ticker= or ?cik= | x-402.online | - | $0.10 | listed |
| One Machine Thought API one machine thought — error404.life, the house of missing things, answers its sibling status code. pay a penny, the door opens with a receipt. door 402 of the toll booth. | error404.life | - | $0.01 | listed |
| One Macro Datapoint, Cheap API One macro datapoint, cheap: value + prior + delta + date for a single indicator, for agents that want a number rather than a report. Differentiated CHINA coverage in English: lpr, cn10y, sse, hsi, usdcny, a_share_turnover, a_share_breadth, northbound. Plus US/global: fed, us10y, us2y, us_yield_curve, us_cpi, us_unemployment, us_hy_spread, us_financial_stress, nasdaq, vix, gold, wti, usdjpy. Query ?name=lpr. Data reseller output, not investment advice. | stockwaves.net | - | $0.003 | listed |
| One Payment API One payment: DNS + TLS cert + RDAP WHOIS + HTTP HEAD for brand protection and security agents | vercel.app | - | $0.015 | listed |
| One Property In, Everything We Know Out API One property in, everything we know out: pass ?address= or ?apn= (parcel id; plus optional city/state) and get every matching record across all DwellData feeds — active multifamily listings with underwriting, county tax-delinquency signals, and upcoming sheriff-sale auctions, each with its public source URL. Task-shaped for agents: one property question, one call. No match returns free — you never pay for a blank. | dwelldata.io | - | $0.02 | listed |
| One bounded OpenAI-compatible chat completion via ZenMux, the honest Oblique equivalent of CheapTokens AI inference access; max 24,000 input characters and 600 output tokens One bounded OpenAI-compatible chat completion via ZenMux, the honest Oblique equivalent of CheapTokens AI inference access; max 24,000 input characters and 600 output tokens | oblique.markets | - | $0.01 | listed |
| One pkgproof package verification One pkgproof package verification | pkgproof.net | - | $0.05 | listed |
| One-call market brief: BTC/ETH/SOL, Base gas, sentiment One-call market brief: BTC/ETH/SOL, Base gas, sentiment | agenttoll.app | - | $0.005 | listed |
| Open Payments API Which manufacturers pay a given physician specialty in a territory, and how much — CMS Open Payments rolled up to the paying company. Answers: which pharma/device companies already reach cardiologists in Texas, and which are the small/emerging ones (max_total_spend) to partner with or compete against? Filter: specialty, state, performance_year (defaults to latest), max_total_spend/min_total_spend, min_physicians; sort by matched_amount or manufacturer_total_spend (asc = smallest first). | healthparse.io | - | $0.03 | listed |
| Open Source Vulnerability Check CycloneDX SBOM vulnerability check — analyze bounded JSON 1.5 software bill of materials components against OSV and prioritize exact CVE matches from CISA KEV without remote document fetches. | x402atlas.com | - | $0.02 | listed |
| Open Source Vulnerability Check Batch dependency vulnerability check — check ordered exact package versions in OSV with deduplicated CVE enrichment, explicit completeness, and CISA KEV known-exploited signals. | x402atlas.com | - | $0.01 | listed |
| Open Source Vulnerability Check Package vulnerability check — check one exact open-source dependency version or purl against OSV, enrich CVE matches with CISA KEV known-exploited signals, and report fixes, severity, and provenance. | x402atlas.com | - | $0.005 | listed |
| Open a Prepaid Session Mint a bearer session token bound to your wallet. Prepay credits via /credits/buy, open a session here (once), then call /m/<route> with the token to spend credits per call OFF-CHAIN at high frequency — no per-call settlement. The rail for looping agents. Token expires; treat it as a password. Returns {session_token, ns, balance, expires_at}. | shizu.me | - | $0.002 | listed |
| OpenAI-Compatible Embeddings Drop-in OpenAI embeddings endpoint — same base_url as /v1/chat/completions, pay per call in USDC, no account or key. POST {input: string|array (max 16 items, 8KB total), model?, dimensions?}. Returns the standard {data:[{embedding:[...]}], usage} shape. Flat price per call. The bulk-loop primitive for RAG ingestion, semantic search, dedup, clustering — point your OpenAI SDK here and embed. | shizu.me | - | $0.002 | listed |
| OpenAI-Compatible LLM Gateway Drop-in OpenAI Chat Completions — point any OpenAI SDK's base_url here and pay per call in USDC, no account or key. POST {model, messages:[{role,content}], max_tokens?, temperature?, stream?}. Backed by Claude Haiku; flat price regardless of model. Multi-turn (system/user/assistant), OpenAI-shaped choices[]+usage. Input ~3000 words, output capped 512 tokens. The account-less inference gateway for looping agents. | shizu.me | - | $0.015 | listed |
| OpenAI-compatible chat completion (fast tier). Streaming supported. OpenAI-compatible chat completion (fast tier). Streaming supported. | cloudfront.net | - | $0.002 | listed |
| OpenInterest Full OI report — all assets, all exchanges, 5-min delta | aidress.ai | - | $0.05 | listed |
| Openmart Id API Fetch full business records by openmart_id or google_place_id. Up to 100 IDs. | orthogonal.com | - | $0.01 | listed |
| Openssf Scorecard For A Public Github Repo API OpenSSF Scorecard for a public GitHub repo: aggregate score out of 10 plus per-check results for branch protection, code review, maintenance, pinned deps and vulnerabilities. Keyless. | suverse.io | - | $0.15 | listed |
| Opportunities API How much open federal money is in the dataset right now? Headline aggregates: active SAM.gov contract opportunities (and how many still have an open deadline), Grants.gov opportunities by status (posted vs forecasted), and USAspending award records on file with their total dollar amount. | govparse.io | - | $0.001 | listed |
| Ops Link Integrity API Deterministic HEAD/GET check of every URL in the task; PASS/FAIL verdict with per-URL status codes. Post-deploy verification SKU (RQ-BO-DELEGATE-02). | craigmbrown.com | - | $0.01 | listed |
| Options Chain & IV Options chain with calls and puts, all strikes, implied volatility, volume, open interest, and put/call volume ratio from real Yahoo Finance data. Supports optional expiration date selection (defaults to nearest). Essential for options traders analyzing volatility skew and positioning. $0.005/call. | x402financialdata.com | - | $0.005 | listed |
| Oracle API Live crypto market intelligence from Binance spot data: price, 24h volume, RSI/MACD/EMA/ATR indicators, order block levels and volume-profile metrics. | vercel.app | - | $0.05 | listed |
| Orcpin Single-trade T+1 settlement date, as a one-line GET: given a trade date and an as-of date, returns the settlement date and whether it has settled, on the versioned NYSE holiday calendar with SEC Rule 15c6-1 cited. The low-integration sibling of the batch settlement-dates route — no request body. A dates fact, never a violation determination. Nothing is stored. | orcpin.dev | - | $0.02 | listed |
| Orcpin Wash-sale preflight for trading agents: evaluates a proposed buy against the operator's realized-loss sales across ALL accounts (caller-supplied) for the 61-day IRC §1091 window — would_trigger with the matched loss sales, an honest clear, or insufficient_data naming the gap. Tax status with the rule cited, never advisability; a disallowed loss defers, not forfeits. Exact-ticker v1; nothing stored. Agent account silos can't see the cross-account window — this check can. | orcpin.dev | - | $0.05 | listed |
| Order Flow Snapshot API Order flow snapshot — CVD, OI, whale CVD, session levels, proximity to key levels, volume gear ratio. Live from rook-engine MMT WebSocket feed | ai-rook.com | - | $0.125 | listed |
| Orderbook API Real-time order book depth showing buy and sell walls across Binance, OKX and Coinbase 💎【付款后立得】实时结构化JSON,即插即用——无需注册,USDC一键支付即取数据。 | agentdatum.com | - | $0.001 | listed |
| Orderplans API Korean government annual/quarterly procurement ORDER PLANS — the earliest signal, published before pre-specs and bid notices. What each agency plans to buy this year, with amounts and target months. | ljaysk.com | - | $0.01 | listed |
| Organic Bing results for a keyword — the second search engine, often different from Google Organic Bing results for a keyword — the second search engine, often different from Google | connskill.com | - | $0.10 | listed |
| Organic search competitors of a domain, with keyword overlap metrics Organic search competitors of a domain, with keyword overlap metrics | connskill.com | - | $0.08 | listed |
| Organic visibility overview of a domain: keyword counts by position bucket plus estimated traffic Organic visibility overview of a domain: keyword counts by position bucket plus estimated traffic | connskill.com | - | $0.10 | listed |
| Organizations API Get complete organization info by Apollo organization ID. | orthogonal.com | - | $0.01 | listed |
| Origin Header Normalize: Origin Header Normalize normalizes scheme, host, and effective port from an Origin value from bounded caller-supplied values without an external provider. Call Origin Header N Origin Header Normalize: Origin Header Normalize normalizes scheme, host, and effective port from an Origin value from bounded caller-supplied values without an external provider. Call Origin Header Normalize before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Origin Header Normalize as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party,… | delx.ai | - | $0.001 | listed |
| Origins API Before hiring or paying an ERC-8004 agent, grade the controlling wallet's funding origins (CEX, bridge, mixer, organic) A-F. POST wallet_address; signed certificate + Celo on-chain anchor. $0.05 USDC. | globalscoreagent.com | - | $0.05 | listed |
| Orlando STR License Check Does this Orlando address hold a short-term rental license? Query any street address in Orlando, Florida and get license number, status, issued/expire dates, and holder name. For host compliance and agent workflows. Input: address string. Output: JSON, live City of Orlando open data. | onrender.com | - | $0.01 | listed |
| Ot/ics Supply Chain Vendor Risk Assessment API OT/ICS supply-chain vendor risk assessment. Pass ?vendor=(name) e.g. Schneider Electric, Siemens, Rockwell Automation, optionally &product=(line) e.g. Modicon. Returns risk tier, confidence, cited CVEs (KEV/EPSS), threat actors with historical targeting interest, and supply-chain mitigation recommendations. DeepSeek-synthesised, ICD-203 language. Certain restricted-license sources excluded. | onrender.com | - | $0.15 | listed |
| Otto AI One call returns the full domain profile for vetting, deliverability, or phishing/fraud checks: live DNS (A/MX/NS + record counts), RDAP/WHOIS registration (registrar, domain age, expiry, status, DNSSEC) and email authentication (SPF, DMARC policy, detected DKIM selectors) — plus a one-line summary. Bundles three lookups into one hourly-fresh read. Keyless, license-clean, pay-per-call. | ottoai.services | - | $0.02 | listed |
| Otto AI Close an open perpetual position on Hyperliquid (full or partial). Cancels all attached TP/SL trigger orders automatically. | ottoai.services | - | $0.01 | listed |
| Otto AI Daily US macro-regime snapshot from licensed Alpha Vantage series: 10-year Treasury yield, effective federal funds rate, three-month rate changes, CPI index and YoY inflation, plus a mechanical rates-direction/inflation-direction label with disclosed thresholds. Three upstream calls per daily refresh; scanner context only. | ottoai.services | - | $0.003 | listed |
| Otto AI Daily technical snapshot for a vendor-resolved equity from licensed Tiingo adjusted closes: Wilder RSI-14, 20-session momentum, SMA-20/SMA-50, price distance from each average, above/below/mixed trend state, and the latest observed golden/death cross. Price and averages retain Tiingo payload units because the captured feed does not identify a currency. | ottoai.services | - | $0.003 | listed |
| Otto AI Dividend intelligence for a vendor-resolved equity: TTM yield, payout ratio and dividend/share, next known ex-date, latest raw and adjusted dividend values, adjusted complete-year growth, recent payments, and a yield-trap checklist with explicit coverage. Monetary fields retain FMP payload units because the captured feeds do not identify a currency. | ottoai.services | - | $0.003 | listed |