Discover / x402.ottoai.services
Otto AI
■ Challenge detectedImportance-ranked crypto headlines with per-article source links and publish times, plus a sentiment-scored market brief. Regenerated hourly; meta carries the snapshot's age and a fresh/stale verdict.
- Listed price
- $0.001
- Challenge detected
- 10 of the last 10 checks
- Median response
- 254 ms
- Last checked
- 16 Oct, 13:59 UTC
- In our index since
- 26 Sept 2026
Endpoint
curl -i https://x402.ottoai.services/crypto-news # 402 Payment Required: pay with an x402 client (USDC on Base), # then send the same request again with the payment attached.
76 listed endpoints · on x402 Bazaar
Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.
Base URLhttps:
- GET/web-search$0.009Web search for AI agents, powered by Exa neural search: pass a query and receive relevant pages with title, URL, published date, author, relevance score and a text snippet as structured JSON. Pair with /web-extract for full-page content. For RAG retrieval, research, fact-finding and monitoring. Keyless, pay-per-call, cached by query. No matches returns an empty result set.
- GET/institutional-holdings$0.00313F holdings for any SEC-filing manager (hedge funds, asset managers) by CIK or manager ticker: latest 13F top 20 positions, amendments applied (hourly snapshot, ~1h correction lag): issuer, CUSIP, value in whole USD, share/principal amount (SH/PRN), put/call flag, reported value, position count. Whale tracking from the primary source. 13F holdings, hedge fund positions, institutional ownership. Public-domain SEC EDGAR. $0.003 per call.
- POST/feedback$0.001Otto X402 Router — Feedback & Refunds. Rate a paid Router call by its payment tx_hash. An approved refund returns this $0.001 fee PLUS the refundable amount, only to the original payer, never above what you paid Otto.
- GET/news-recaps$0.003A tight 4-6 sentence crypto market recap an agent can ingest whole — direction and why, the 2-3 developments that matter, anything notable on the top-10 board — plus the ranked stories as typed fields: stories[] (rank, title, whyItMatters, url, publishedAt, source; linked by exact title, null when unmatched). Distilled from the Otto news engine; served while fresh, refreshed on demand.
- GET/token-security$0.001Token security scanner — is this token safe to buy? Honeypot, rug-pull, and scam detection for any token contract — flags can't-sell traps, hidden mints, malicious buy/sell taxes, and holder concentration. Powered by GoPlus across 8 chains.
- GET/tweet-search$0.005Search X/Twitter for any query and get the actual matching tweets — keyword, $CASHTAG, from:handle (a user timeline), @handle (mentions), or boolean OR. Each tweet returns author, full text (long-form note tweets included), timestamp, likes and retweets (reply/quote counts when available). Most-recent-first for real-time monitoring and alerting. Live X search backend, pay-per-call USDC, structured JSON.
- GET/stablecoin-watch$0.001Is USDC/USDT/DAI holding its $1 peg, and is stablecoin supply growing or shrinking (risk-on vs risk-off)? Live peg deviation (bps), circulating supply + 1d/7d/30d flow, market dominance and chain spread for the top 30 USD stablecoins, plus downside depeg alerts for any coin trading >0.5% below peg. Sourced from DefiLlama (public). Served from a cached snapshot while fresh (≤1h) and regenerated on demand when a read finds it stale.
- GET/gas-oracle$0.001Base gas oracle from Otto's own RPC: current base fee (wei+gwei), legacy gas price, and slow/standard/fast EIP-1559 priority-fee tiers (p25/p50/p90 over the last 20 blocks) with a ready-to-sign maxFeePerGas per tier. Unlike the crowded gas shelf it PUBLISHES the formula, so every tier is reproducible from the response. Flat JSON, refreshed every minute. Base gas oracle, gas price, priority fee, EIP-1559, maxFeePerGas. $0.001 per call.
- POST/tx-explainer$0.01Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.
- GET/equity-news$0.003Company news for a vendor-resolved equity: licensed Finnhub headlines from the past 7 days with time, source and summary. Served only when an article names the company or prints its ticker as a standalone uppercase symbol (`primary`: headline, `mentioned`: summary); an English-word ticker such as ON can match unrelated all-caps text. A week with none is refused uncharged (`no_recent_news`). Redirect URLs withheld; no sentiment is fabricated.
- GET/tokenized-stock-movers$0.003Day movers for tokenized US stocks and ETFs on TWO rails in one call: Robinhood Chain (chainId 4663) and Base B20 (38 Coinbase-issued tokens, keyed by token address). Gainers and losers by REAL day-over-day change of the UNDERLYING stock vs the prior NYSE session close (Finnhub quotes), per-rail coverage counts; withdrawn tokens named with a reason, unquotable ones counted. Off-hours values freeze. Refreshed every 15 minutes.
- GET/8k-material-events$0.0038-K filings by ticker — the item-coded SEC material-event feed: up to 20 8-Ks a US-listed company filed in 90 days (more → `truncated`), tagged with the SEC's own item codes and titles (1.01 material agreement, 1.05 cybersecurity incident, 3.01 delisting notice, 5.02 officer change). Returns event and filing dates separately, amendments labelled, EDGAR links. Earnings-only filings excluded and counted. Public-domain SEC EDGAR. $0.003 per call.
- POST/meta-intelligence$0.001Otto X402 Router — Meta Intelligence. Ask what data/service you need; get the best Otto-verified plus live CDP Bazaar x402 candidates with prices, pay_urls and blunt source labels. Non-custodial discovery.
- POST/swap$0.01Execute instant same-chain token swaps through LI.FI's DEX aggregation. Supports Base, Ethereum, Polygon, BSC, Arbitrum, Avalanche, and Solana, with best-route execution across major DEXes and liquidity sources.
- GET/dividend-intel$0.003Cash-dividend intelligence for a vendor-resolved equity from licensed Tiingo end-of-day history: TTM dividend/share and yield against the latest close, latest dividend, split-adjusted complete-year growth, the last eight payments, split events, and a cut-detection checklist with explicit coverage. Payout ratio, forward ex-dates and declaration/record/payment dates are not served (not in the Tiingo feed). Cash values keep Tiingo payload units.
- GET/token-alpha$0.005Premium token intelligence: price metrics, news, Twitter sentiment, and futures data. Find out why your token is moving.
- GET/portfolio$0.001Multi-chain portfolio snapshot with token balances and yield positions for a user's Otto AI Safe accounts across Base, Ethereum, Arbitrum, Polygon, BSC, Avalanche, and Solana.
- GET/tradfi-data$0.003TradFi macro intelligence: indices, VIX, DXY, treasury yields, commodities, and individual stock quotes with moving average context.
- GET/form-144-filings$0.005Form 144 filings by ticker — SEC notices of PROPOSED insider sales, filed BEFORE the Form 4 that reports the executed trade: who intends to sell, units, the filer's own market-value estimate, broker, approximate sale date and Rule 10b5-1 plan dates. The earliest public read on insider selling intent; a notice is not a completed trade and may never be executed. Up to the latest 20 notices in 90 days. Public-domain SEC EDGAR. $0.005 per call.
- GET/hyperliquid-market$0.001Hyperliquid perpetuals market data: live mark/oracle price, funding rate, open interest, max leverage, and size specs for any tradable asset.
- POST/generate-meme$0.15AI image generation and editing via fal.ai, including memes. model: gpt-image-2 (default) | nano-banana-pro; anything else -> 400. Flat $0.15 per image. Supports image editing via public image URL.
- GET/yield-markets$0.001DeFi yield farming markets with live APYs across Aave V3 and Morpho on Base, Ethereum, and other major chains. Find the best stablecoin yield (USDC) and ETH yield for idle capital: returns supply APY, TVL, and vault/market addresses per token, filterable by protocol, chain, or token symbol. Compare DeFi yield rates across lending markets and vaults before depositing.
- GET/13d-activist-watch$0.005Schedule 13D and 13G activist stake filings by ticker: every beneficial-ownership filing made about a US-listed issuer in the last 365 days, each validated against its own cover page so a company's outbound filings about OTHER companies are excluded. Returns 13D vs 13G counts, amendments, reporting-person names and EDGAR links. 13D is the schedule filed without a passive/qualified certification. Public-domain SEC EDGAR. $0.005 per call.
- GET/token-score$0.01Token score by contract address: one 0-100 composite of a Base token market structure from seven weighted factors — USD liquidity, holder concentration and count, 24h volume, market age, pool breadth, price stability. Every sub-score, weight and raw input comes back, so the score can be recomputed. A factor whose data plane is unavailable is reported absent, never filled. Market structure, not a contract-security screen. $0.01 per call.
- GET/web-links$0.003Extract all links (hrefs) from any web page as structured JSON — every internal, external and anchor link, deduplicated, returned with a total count. Renders the page in a real headless browser, so it captures links injected after JavaScript runs that fetch-only scrapers miss. For crawling, sitemap building, link audits and site-structure mapping. Keyless, pay-per-call.
A dash means the listing gives no price or method. Copy buttons copy the full URL.
Showing 25 of 76 listed endpoints. Next endpoints First endpoints
Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402.ottoai.services
Recent checks
All 10 checks
| When (UTC) | Result | HTTP | Response |
|---|---|---|---|
| 16 Oct, 13:59 UTC | Challenge detected | 402 | 245ms |
| 15 Oct, 08:20 UTC | Challenge detected | 402 | 284ms |
| 14 Oct, 00:19 UTC | Challenge detected | 402 | 198ms |
| 12 Oct, 00:34 UTC | Challenge detected | 402 | 263ms |
| 10 Oct, 12:38 UTC | Challenge detected | 402 | 320ms |
| 9 Oct, 09:34 UTC | Challenge detected | 402 | 312ms |
| 8 Oct, 09:33 UTC | Challenge detected | 402 | 166ms |
| 7 Oct, 06:40 UTC | Challenge detected | 402 | 150ms |
| 5 Oct, 17:05 UTC | Challenge detected | 402 | 284ms |
| 26 Sept, 05:02 UTC | Challenge detected | 402 | 162ms |
Questions
Did our last probe detect a payment challenge?
At our last probe on 16 Oct, 13:59 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.
What price is recorded for Otto AI?
Its listed price is $0.001.
What payment terms does Otto AI advertise?
The listing advertises x402, Base, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.
Where is Otto AI listed?
In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.
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