The x402 marketplace
with memory.

X

x402.twit.sh

x402.twit.sh

Search Twitter/X tweets with advanced filters. Returns up to 20 tweets per page, most recent first, with pagination. At least one filter required. Params: words, phrase, anyWords, noneWords, hashtags, from, to, mentioning, minReplies, minLikes, minReposts, since (YYYY-MM-DD), until, next_token. e.g. GET /tweets/search?words=bitcoin&from=elonmusk&minLikes=100. Returns X v2 API-compatible JSON.

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x402.tavily.com

x402.tavily.com

Tavily Search - advanced mode

A

agents.chain.link

agents.chain.link

Chainlink For Agents: execute a catalog workflow by workflow name.

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StableEnrich

stableenrich.dev

Exa Search - Neural search across the web

O

Otto AI

x402.ottoai.services

Real-time crypto market news with sentiment analysis and top headlines ranked by importance.

A

api.onesource.io

api.onesource.io

Latest Ethereum block height - current chain tip via eth_blockNumber

A

api.loyalspark.online

api.loyalspark.online

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes. Customers earn real value with every purchase. AI agents automate the rest.

B

BlockRun.AI

blockrun.ai

Neural and keyword web search. Optional category filter: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial report.

A

Agent402.tools

agent402.tools

Transcribe audio to text using OpenAI (gpt-4o-mini-transcribe). Provide a URL to an audio file (mp3, wav, m4a, etc.) and get back the transcript. No API key needed; pay per call via x402. Max 5 minutes of audio, 25 MB file size.

2

2s

2s.io

Forward geocoding — free-text address or place name → latitude/longitude plus structured address components (houseNumber, road, suburb, city, county, state, postcode, country, countryCode). Query: q (2-500 chars), limit (1-10, default 5), country (optional 2-letter ISO 3166-1 bias). Underlying data is OpenStreetMap (ODbL). Sister: /api/geocode/reverse.

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win.oneshotagent.com

win.oneshotagent.com

People and contact discovery

E

Exa

api.exa.ai

Exa /search endpoint

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api.deepnets.ai

api.deepnets.ai

The active deepnets watchlist - high-volume tokens that passed the safety screen, with current safety data.

A

api.x402node.dev

api.x402node.dev

Total value locked for any DeFi protocol with per-chain breakdown via DefiLlama, by protocol slug such as aave-v3 or uniswap. defi tvl, protocol tvl, total value locked, defillama tvl, protocol metrics Accepts payment on Base or Solana — either network works.

N

Nansen

api.nansen.ai

Get Address Current Balance Data

S

StableTravel

stabletravel.dev

Search Google Flights for flight offers. Returns best flights, other flights, price insights, and airport info.

S

Signal Oracle

oracles-production.up.railway.app

Latest reported 10-year Treasury yield value (%) with its observation date.

A

api.dripmetrics.ai

api.dripmetrics.ai

DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand crypto market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN estimates volume-synchronized probability of informed trading for a crypto trading pair over a specified window. Discovery examples use the latest 30m window.

A

aeml-x402.zeabur.app

aeml-x402.zeabur.app

Flood-risk & river-anomaly check(?signal_id=&entity=):現值 vs 官方洪水閾值(gage height / streamflow / flood stage / flood category)+ 近5年同季節是否異常(統計分層 strata)+ 校正單位(normalized_index)+ record_hash 可驗證。官方源 USGS/NOAA·pay-per-call·no API key。一次付、免自己拼;純描述可驗證,判斷由 agent

A

api.linkedpanda.com

api.linkedpanda.com

Verified work-email lookup for a LinkedIn profile

R

ReadX

readx.sh

Replies to a tweet (paginate with cursor until has_more is false). Example: GET /api/tweets/20/replies

K

Kronos Crypto Data & Forecasts

kronossignals.com

Crypto Fear & Greed Index: alternative.me score (0-100) plus Kronos-owned context (BTC funding sentiment, OI 1h trend, 24h price momentum). Not a pure proxy — adds proprietary derivative signals. Pay-per-call via x402.

A

api.strale.io

api.strale.io

Detect technologies used by a website. Identifies CMS, frameworks, analytics, CDN, payment providers, marketing tools from HTTP headers and HTML patterns. No Browserless needed.

C

clonecho.builda.company

clonecho.builda.company

Current air quality (US AQI, PM2.5, ozone) for a location (?lat=&lon=). Live. Returns JSON.

V

VAPE

vape-x402.vapex402.workers.dev

VAPE token_safety_check — Full token safety + liquidity scan with a weighted 0-100 risk score. Real on-chain/market data, no simulation.

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proxy.suverse.io

proxy.suverse.io

Bidirectional SPL token swap aggregator on Solana mainnet via Jupiter v6 routing across 30+ DEXs (Raydium, Orca, Meteora, Phoenix). USDC to BONK WIF POPCAT JUP RAY ORCA SOL MEW BOME or any SPL, and reverse to USDC. Two-step quote/execute x402 flow. 1% fee. AI agent swap. memecoin DEX.

O

Ozmium Agent API

ozmium.org

Every listed Morpho Blue market on Base: marketId, full MarketParams (loanToken, collateralToken, oracle, irm, lltv- the id is re-derived and asserted, wrong-market proof), live borrow APY, and LLTV. The input universe for /v1/tx/loan. GET /v1/loan/markets.

X

x402stock.xyz

x402stock.xyz

Compare 2 to 3 US-listed stocks side by side (peer or watchlist comparisons). Pass a comma-separated list via `?tickers=AAPL,MSFT,NVDA` (1 to 3 symbols). Returns price and day change, market cap, P/E, EPS, revenue, gross and net margins, and dividend yield per ticker. Built for multiple stocks — for a single stock, `/api/v1/quote/{ticker}` is cheaper. From x402stock

X

x402.browserbase.com

x402.browserbase.com

Create a Browserbase browser session with prepaid time. Returns a WebSocket connection URL for browser automation.

C

CuseTheJuice Agent Email

mail.cusethejuice.com

CuseTheJuice agent email on Base USDC: create accounts, list and read email, send, reply, search, folders, attachments, trust index, password recovery, custom domains, and domain admin. Pay with x402 (Base USDC). HTTP shape: extensions.bazaar on the 402. Catalog: https://mail.cusethejuice.com/machine-mail.html

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StableEstate

stableestate.dev

Search rental apartment listings powered by MLS data

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x402scan

www.x402scan.com

Paginated list of merchants (top recipients by volume)

A

api.invoket.com

api.invoket.com

Before your agent schedules a delivery, plans outdoor work or hedges short-term weather exposure: a point forecast of 2 m temperature, precipitation and 10 m wind — plus opt-in convective, humidity, cloud and snow variables — for any GPS point or city. Deterministic NOAA GFS at 0.25 deg to 16 days (384 h), NOAA GEFS ensemble mean at 0.5 deg to 35 days (840 h); the lead selector is optional (omitted, the forecast defaults to the current analysis time) and the response names the model that served it and the exact forecast step.

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x402-services-production.up.railway.app

x402-services-production.up.railway.app

Wallet reputation: objective on-chain trust signals for an EVM address (vet a counterparty before dealing). Send { address }.

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Vaaya

vaaya.ai

Exa — semantic web search via our API key. numResults up to 100. For people/lead discovery set category:"people" with an open ICP query.

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api.interzoid.com

api.interzoid.com

Detect the language of input text and translate it to any specified target language. AI-powered translation supporting numerous world languages.

Q

QuickNode

x402.quicknode.com

Payment for Quicknode RPC access. Options: per-request ($0.001/request), nanopayment ($0.0001/request via Circle Gateway), or credit drawdown with SIWX authentication.

G

Google Trends SEO Keyword Data

google-trends.use.x402atlas.com

Google Trends interest over time for a keyword — worldwide search popularity as a monthly series for keyword research, SEO & demand trend analysis.

A

api.myceliasignal.com

api.myceliasignal.com

Real-time Bitcoin price in USD, aggregated from 9 exchanges including Binance, Coinbase and Kraken — Ed25519 signed attestation

A

api.printmoneylab.com

api.printmoneylab.com

Real-time Kimchi Premium for a single token (Upbit vs Binance via FX rate)

T

TickersFeed

api.tickersfeed.net

Latest news for any US stock — top 10 articles from the last 7 days, with headline, summary, source, and URL. $0.005 USDC per call.

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Stock Trends Market Intelligence

api.stocktrends.com

Latest weekly price row for a Stock Trends symbol, including adjusted close, weekly high/low, volume (actual shares traded), trades, and price change.

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Glassnode

x402.glassnode.com

Market Value to Realized Value Ratio (MVRV) — Market Value to Realized Value (MVRV) is the ratio between market cap and realized cap. Data by Glassnode.

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Stratalize

www.stratalize.com

Stratalize — attested finance, legal, healthcare, and compliance intelligence. Signed, independently verifiable receipt on every call (trust.stratalize.com/verify). CMS Hospital Compare quality scores — safety, readmissions, patient experience, mortality, and overall star rating by hospital. Source: CMS Care Compare synced data. Use when evaluating hospital quality for a referral network, acquisition, or competitive analysis

A

ApiToll Crypto Prices

crypto.apitoll.cloud

Latest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain.

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glim.sh

glim.sh

LLM chat completion (OpenAI-compatible, streaming supported)

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web-search

api.agentstools.dev

Free-text web search, returns title/url/snippet list (DuckDuckGo).

N

NetIntel

netintel.dev

Extract structured data from any unstructured text into your own JSON Schema — structured-data / information extraction, text-to-JSON, LLM data enrichment. You supply the schema; the LLM returns a matching object. Works for contacts, invoices, events, product specs, medical records, legal clauses, resumes — any shape. Returns the extracted object plus token usage; unfound fields are omitted or null.

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Spraay x402 Gateway

gateway.spraay.app

Pay-per-use gateway for autonomous agents spanning payments, escrow, data, AI inference, and DeFi. Its BPA 1.0 batch-payment endpoint sends USDC or ERC-20 tokens to up to 200 recipients in one atomic, non-custodial transaction.