Algorand · x402 v2 · mainnet 69 endpoints · USDC on Algorand MainNet

Intelligence your

agent can buy

on Algorand.

69 read-only Otto AI endpoints with clear per-call prices, payable in USDC on Algorand MainNet. Request data, receive an x402 challenge, sign, and retry. No account or API key.

Otto AI Algorand
curl · algorand.ottoai.services
$ curl -i https://algorand.ottoai.services/crypto-news
HTTP/2 402 Payment Required
Payment-Required: <x402 challenge>
# sign the exact Algorand USDC requirement
# retry with Payment-Signature
HTTP/2 200 · application/json
Algorand MainNet USDC · ASA 31566704 x402 v2 · exact Read-only data
69
Endpoints
5
Categories
1
Settlement network
$0.001
Floor per call
Quickstart

Three steps. No API keys.

Discover the catalog, request any endpoint, and read the 402 payment requirement. Sign the exact Algorand USDC payment and replay the request with its proof.

01 — Discover

Read the catalog

Fetch /llm.txt for all 69 routes, query hints, descriptions, and exact per-call prices.

curl https://algorand.ottoai.services/llm.txt
02 — Request

Hit an endpoint

An unpaid GET returns 402 Payment Required with the network, asset, amount, and recipient.

curl -i https://algorand.ottoai.services/crypto-news
HTTP/2 402 Payment Required
03 — Pay

Sign and retry

Sign the listed Algorand USDC payment and replay the request with Payment-Signature.

Payment-Required: <x402 challenge>
Payment-Signature: <signed proof>
Network facts

One honest rail. No substitutions.

This surface sells read-only data. It does not expose fund-moving POST routes, bridge assets, or substitute another chain behind the payment challenge.

Settlement network Algorand MainNet algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
Payment asset USDC Algorand Standard Asset 31566704
Payment protocol x402 v2 · exact Payment-Required → Payment-Signature
Facilitator Algorand verification and settlement facilitator.goplausible.xyz
Catalog · 69 endpoints

Every service, priced clearly.

Prices, descriptions, query hints, and the endpoint count below come from the same catalog that configures each payment challenge. Prices range from $0.001 to $0.10 USDC per call.

69 endpoints
GET /crypto-news
Crypto news API: importance-ranked headlines with source links and publish times, plus a sentiment-scored market brief. Importance-ranked crypto headlines with per-article source links and publish times, plus a sentiment-scored market brief, from Otto's own news engine. Regenerated hourly over a 6h look-back (widened to 12/24h on a quiet window — the report states the period it covers); `meta` carries the snapshot's build time, its age in seconds and a fresh/stale verdict against that cadence.
$0.001 USDC
GET /news-recaps
The one-paragraph state-of-market: a 4-6 sentence recap of direction and what matters, plus the ranked stories as typed fields with URLs. A tight 4-6 sentence crypto market recap an agent can ingest whole: overall direction and why, the 2-3 developments that matter, and anything notable on the top-10 board — distilled on demand (served while fresh, ≤1h) from the same live news engine behind Otto's top-ranked /crypto-news feed. The one-paragraph state-of-market; buy /crypto-news when you want the full report. Beside the prose, stories[] carries the ranked board as named typed fields — rank, title, whyItMatters, url, publishedAt, source (linked to the window's source articles by exact title; null when unmatched, never a guessed link) — with storiesStatus / articlesStatus and the analysis window, so an agent parses the same shape /crypto-news sells instead of regexing the board.
$0.003 USDC
GET /base-ecosystem-news
Up to 12 Base-scoped headlines from the last 48h, each with a permalink and timestamp, screened against the general crypto feed. Plus an AI read. Base-chain ecosystem news for Base-native agents, not the general crypto firehose. Up to 12 Base-scoped headlines from the last 48h, each with its own permalink and publication timestamp, screened against the general /crypto-news feed; `screen` states what was dropped. The AI topic read is optional and is withheld, never padded with macro, when there is no Base coverage. Refreshed hourly from cache; a read past the freshness window pulls inline.
$0.001 USDC
GET /filtered-news?topic={topic}
AI-filtered crypto news and X search for any non-token topic — airdrops, DeFi trends, narratives (max two-word query). AI-filtered crypto news and Twitter search for non-token topics (airdrops, DeFi trends, etc). Max 2 words.
$0.001 USDC
GET /twitter-summary
A quick crypto-Twitter pulse check: breaking news, trending narratives and sentiment shifts at a glance. Quick pulse check from crypto Twitter. Breaking news, trending narratives, and sentiment shifts at a glance.
$0.001 USDC
GET /token-details?symbol={symbol}
Core metrics for any listed token — price, market cap, volume, supply and basic stats — in one clean call. Token price, market cap, volume, supply, and basic metrics. Works for any listed token.
$0.001 USDC
GET /token-alpha?symbol={symbol}
Why a token is moving: price metrics, news, X sentiment and futures data fused into one premium intelligence read. Premium token intelligence: price metrics, news, Twitter sentiment, and futures data. Find out why your token is moving.
$0.005 USDC
GET /kol-sentiment
KOL sentiment and trading alpha from an Otto-curated crypto-KOL feed: real trading signals, trending token picks and overall mood. Sentiment and token mentions from an Otto-curated crypto-KOL feed. Real trading signals, trending token picks, and sentiment from influencers who move markets.
$0.003 USDC
GET /trending-altcoins
The 3 hottest altcoins right now, surfaced from live news and X analysis — a fast momentum read (DYOR). Top 3 hottest altcoins traders may want to ape into, based on news and Twitter analysis. DYOR.
$0.002 USDC
GET /mega-report
Otto's daily Alpha & Intel Report in one call: headlines, X sentiment, KOL alpha, trending altcoins and yield. Alpha & Intel Report — daily crypto market intelligence: headlines, Twitter sentiment, KOL alpha, trending altcoins, and yield opportunities in one report.
$0.05 USDC
GET /token-security?address={address}&chain={chain}
Honeypot, rug-pull and scam detection for any token contract — flags can’t-sell traps, hidden mints, taxes and concentration (GoPlus, 8 chains). Token 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.
$0.001 USDC
GET /base-season
What is catching attention on Base: a sentiment read plus quality-screened tokens, each labelled KOL-backed or screen-only, with dated quotes. Base social intelligence: a current Base sentiment summary + the quality-screened Base tokens (CoinGecko-listed, market-cap/age/liquidity gated) that are catching attention on Base — each row labelled with the basis it stands on (`rankedBy`: measured trusted-KOL signal, or the on-chain screen plus open engagement), with per-token KOL mention counts and verbatim quotes where a KOL is actually behind it. Every tweet and quote served is inside a published recency window (`evidenceWindowDays`), and the board publishes its own coverage arithmetic. Includes the overall crypto-KOL market-sentiment backdrop, with an explicit reason when that leg is unavailable. The social-intelligence wedge for Base — who is saying it, not who pumped. Served from a cached snapshot while fresh (≤1h) and regenerated on demand when a read finds it stale.
$0.002 USDC
GET /rh-season
Rug-screened Robinhood Chain movers: liquidity and wash-volume gates cut honeypots; survivors carry rug flags, KOL mentions and sentiment. Robinhood Chain memecoin intelligence: the rug-screened RH Chain (chainId 4663) movers. Hard liquidity + wash-volume gates filter the $0-liquidity honeypots that fake $1M volumes; every survivor carries rug-risk flags (thin liquidity, vol/liquidity anomaly, pool age, CoinGecko listing) plus trusted-KOL mentions with verbatim quotes and a synthesized RH Chain sentiment read. What is pumping AND whether it is real. The body also carries `movers`, the broader most-active tape BEFORE the hard gates, which is not rug-screened. Served from a cached snapshot while fresh (≤1h) and regenerated on demand when a read finds it stale.
$0.001 USDC
GET /tokenized-stock-movers
Day movers for tokenized US stocks and ETFs on two rails — Robinhood Chain and Base B20 — by real change of the underlying vs the prior close. Day movers for tokenized US stocks and ETFs on TWO rails in one call: Robinhood Chain (chainId 4663) and Base B20 (the Coinbase-issued tokens Otto lists, keyed by token address — B20 metadata is mutable, so the address is the identity); each rail reports its own `universeSize`. Gainers and losers by REAL day-over-day change of the UNDERLYING stock vs the prior NYSE session close (Finnhub quotes), with per-rail coverage counts. A token with no listing is named with its reason under `excluded`; a token that cannot be quoted at the time is counted as uncovered, not named. Off-hours values freeze; a tokenized share can trade at a premium/discount to the underlying. Refreshed every 15 minutes.
$0.003 USDC
GET /token-fundamentals?symbol={symbol}
Structured token fundamentals by symbol: market cap, FDV, rank, supply breakdown, ATH drawdown and ROI windows — clean field-by-field JSON. Structured token fundamentals by ticker symbol (resolves to the top-market-cap asset matching it): price, market cap, FDV, rank, 24h volume, full supply breakdown (circulating/total/max), ATH + drawdown from ATH, ATL + recovery, ROI windows (24h/7d/30d/60d/1y), categories, and project links — clean JSON an agent can consume field-by-field. Fundamentals snapshot, not a streaming price feed.
$0.003 USDC
GET /token-price?token={token}
Live DEX token price by symbol or chain:contract across 8 chains, squat-proof — price, 24h change, volume, market cap and liquidity. Live DEX token price in USD by ticker symbol or contract address across Base, Ethereum, Solana, Polygon, BSC, Arbitrum, Optimism and Avalanche (bare 0x tries Base then all chains, else network:address). Symbols resolve to the canonical top-market-cap asset — squat-proof. Flat JSON: price, 24h change, volume, market cap, FDV, liquidity — echoes the matched deployment. Token price, crypto price, DEX price. $0.001 per call.
$0.001 USDC
No endpoints match that search.