Marketplace
API marketplace for AI agents
i
Pay per request in USDC on Solana. No subscriptions, no commitments. Seller keys never leave the gateway.
Production REST API turning 30-50M social posts/hour from X, Reddit, TikTok, YouTube, Instagram, and 10K+ news sources into structured signals across 5,000+ cryptocurrencies and 8,000+ equities. Proprietary metrics (Galaxy Score, AltRank, TopicRank) built for quantitative and qualitative use. 5+ years historical depth. <60s latency for real-time, 5 min for hourly aggregates. Single bearer auth, JSON throughout. Used by hedge funds, fintech, and autonomous agents.
10000/min88
Try this API
Top-of-book bid and ask snapshots for approved crypto instruments from Blocksize. The verified direct shared bid/ask universe includes 2,365 instruments. Use the instrument endpoint below to query available symbols, then request live quote snapshots with bidask_getSnapshot on approved crypto tickers. Direct docs: https://matrix.blocksize.capital/api-docs?ref=Direct. Public symbol reference: https://realtime.blocksize.info/getBidAskSymbols
720/min85
Try this API
SiftingIO provides real-time and historical market data APIs for financial products, trading platforms, analytics tools, dashboards, AI agents, and internal workflows. Coverage includes US equities, forex, crypto, commodities, DEX datasets, fundamentals, market news, market hours, and OHLCV via REST and WebSocket APIs.
5000/min85
Try this API
Deterministic record of contract function call outputs at specific block heights. One row per (contract incarnation, block, call data) combination, enabling time-travel queries over any contract's view function state with audit-grade lineage. Use Cases - Historical state reconstruction and time-travel queries - Token metadata and balance lookups at specific blocks - Contract configuration and parameter tracking over time - Price oracle and external data feed analysis
1000/min85
Try this APICanonical EVM block headers with deterministic integrity metadata. One row per mined block, providing the full header fields alongside BlockDB-recomputed receipt roots for independent verification. Use Cases - Chain reconstruction and blockchain state verification - Gas market analysis and block space utilization - Foundation for transaction and log indexing - Block-level time series analysis and chain health monitoring
1000/min85
Try this API
Cross-platform prediction market intelligence API. Real-time prices, cross-platform market matching, arbitrage opportunities, and smart money alerts across Kalshi, Polymarket, PredictIt, ProphetX, Opinion, and Predict.fun. **Authentication:** Pass your API key in the `X-API-Key` header (preferred) or as the `api_key` query parameter.
10000/min85free tier
Try this APIInstitutional-grade canonical ERC-20 token registry with decimals, name and symbol. Full backfill from genesis. Row-level cryptographic lineage with parent/genesis hashes for audit-grade replay. Use for join keys across swaps/transfers/pools, decimals scaling and address validation.
1000/min85
Try this API
Real-time data for every event, market, position, trader, and more on Polymarket. Built for agents, traders, and developers.
10000/min85
Try this APIComplete transaction records for every executed transaction on EVM chains. One row per transaction, including gas consumption, EIP-1559 fee fields, sender/recipient, and deterministic row-level tracing back to the originating block. Use Cases - Transaction flow analysis and wallet tracking - Gas fee analytics and EIP-1559 impact studies - Failed transaction analysis and debugging - Cross-chain transaction pattern analysis
1000/min85
Try this APIReal-time VWAP pricing for approved crypto markets from Blocksize. The verified direct VWAP universe includes 6,362 crypto pairs. Use the instrument endpoint below to query available VWAP symbols, then request live snapshots with vwap_latest on your approved symbol set. Direct docs: https://matrix.blocksize.capital/api-docs?ref=Direct
720/min85
Try this APIComplete event log records for every log emitted by smart contracts across EVM chains. One row per log entry, with raw topic and data payloads directly verified by RLP, and deterministic row-level tracing back to the originating block. Use Cases - DeFi protocol event tracking (swaps, transfers, mints, burns) - Token transfer and balance change monitoring - Smart contract interaction analysis - Protocol state reconstruction from events - Cross-contract event correlation and analysis
1000/min85
Try this APITop-of-book bid and ask snapshots for approved equity instruments from Blocksize. We verified direct snapshots for AAPLUSD, TSLAUSD, NVDAUSD, 0001-HKHKD, and 0700-HKHKD, and the public bid/ask catalog also includes additional US, Hong Kong, and Japan equity-style symbols. Use this listing for approved equity symbols only. Direct docs: https://matrix.blocksize.capital/api-docs?ref=Direct. Public symbol reference: https://realtime.blocksize.info/getBidAskSymbols
720/min85
Try this APISpot FX pricing for supported Blocksize fiat pairs. We verified direct snapshots for EURUSD, and this listing should expose your approved FX pair set such as EURUSD, RONEUR, and RONUSD. There is no separate verified direct FX instrument-list method for the current key, so this listing uses the shared bid/ask snapshot method on approved FX pairs only. Direct docs: https://matrix.blocksize.capital/api-docs?ref=Direct. Public symbol reference: https://realtime.blocksize.info/getBidAskSymbols
720/min85
Try this APIDiscover supported Blocksize markets before making live requests. Verified direct coverage includes 6,362 crypto VWAP instruments and 2,365 shared bid/ask instruments. The broader bid/ask catalog also includes FX, metals, commodities, and equity-style symbols. Use the instrument endpoints below to find valid symbols before using the paid listings. Direct docs: https://matrix.blocksize.capital/api-docs?ref=Direct. Public symbol reference: https://realtime.blocksize.info/getBidAskSymbols
100/min85
Try this API
Real-time financial news, sentiment, insider activity, investor relations, and filings. News in 50 languages and from 10k sources.
60/min85
Try this API
The CoinMarketCap API is a suite of high-performance RESTful JSON endpoints that are specifically designed to meet the mission-critical demands of application developers, data scientists, and enterprise business platforms. This API reference includes all technical documentation developers need to integrate third-party applications and platforms. Additional answers to common questions can be found on https://coinmarketcap.com/api/faq.
50/min88Curated
Try this API
CoinGecko is the world's largest independent cryptocurrency data aggregator, founded in 2014 to provide a 360-degree market overview. It tracks over 17,000+ cryptoassets across 1,000+ exchanges, offering real-time data on prices, market capitalization, trading volume, and on-chain metrics via its website, app, and API.
10/min85Curated
Try this API
Marketlens - Tick-level historical data for prediction markets Reconstruct millisecond-resolution L2 order books, replay trades, and backtest strategies against full Polymarket microstructure history. Includes implied probability surfaces fitted across events, OHLCV candles, Parquet bulk exports, and underlying-asset reference prices. www.marketlens.trade
60/min85Curated
Try this API
Markets, Events, Indices, News. https://docs.adj.news/openapi.json
3000/min85Curated
Try this API
The spoonacular Nutrition, Recipe, and Food API allows you to access over thousands of recipes, thousands of ingredients, 800,000 food products, over 100,000 menu items, and restaurants. Our food ontology and semantic recipe search engine makes it possible to search for recipes using natural language queries, such as "gluten free brownies without sugar" or "low fat vegan cupcakes." You can automatically calculate the nutritional information for any recipe, analyze recipe costs, visualize ingr...
600/min85
Try this API
High-performance market scanning API for autonomous AI trading agents. Provides real-time signals for crypto mean reversion, oversold conditions, and correlation metrics.
60/min85
Try this APIReal-time signals: SMA, RSI, MACD, Bollinger. Multi-timeframe analysis with buy/sell/hold for 100+ pairs.
60/min85
Try this APIScan Solidity for 13 vulnerability patterns: reentrancy, overflow, access control. Fix suggestions included.
60/min85
Try this APIJSON/CSV/XML conversion, flatten, filter, sort, aggregate stats. Handles 10MB+ payloads.
60/min85
Try this APIDaily, weekly and monthly horoscopes for all 12 zodiac signs. Covers love, career, finance, health and more. Based on astrological transits by an astrologer with 20+ years experience. Available in multiple languages. JSON REST API.
60/min85
Try this API7 valuation methods (DCF, Berkus, Scorecard, VC, comparables) in one call. Investor-ready reports.
60/min85
Try this API400+ cities, DST-aware conversion, meeting planner for multi-timezone teams.
60/min85
Try this APICompare token costs across GPT-4o, Claude 3.5, Gemini and 30+ models. Batch estimation and budget forecasting.
60/min85
Try this APIDetect 150+ technologies across 14 categories from any URL. CMS, frameworks, analytics, CDN, hosting, payments, security and more. Single + batch. REST + MCP.
60/min85
Try this APIFIFO/LIFO/Average cost basis. Multi-exchange, DeFi, staking. Tax brackets for US, UK, EU.
60/min85
Try this APIKorean government data in English: weather, exchange rates, holidays, transport, stocks.
60/min85
Try this APIValidate Korean BRN with checksum, corporate registration numbers, and phone formats. English-friendly.
60/min85
Try this APICountry, city, coordinates, timezone, ISP, ASN. Sub-50ms from Cloudflare edge.
60/min85
Try this APIHEX/RGB/HSL/CMYK conversion, color harmonies (complementary, analogous, triadic), WCAG contrast checking, gradient generation, CSS variables & Tailwind config export. 7 REST endpoints + MCP.
60/min85
Try this API8-layer validation: MX, SPF, 550+ disposable domains, typo correction. Cuts bounce rates by 90%.
60/min85
Try this APIFull-page SEO audit: meta tags, heading hierarchy, links, alt text, performance. Priority-ranked fixes.
60/min85
Try this APISVG and PNG placeholders, avatar initials, geometric patterns. Custom dimensions and colors.
60/min85
Try this APICapture, store, and replay webhook payloads. Debug third-party integrations without a server. Persistent inbox with KV storage.
60/min85
Try this APILCS-based text diffing, unified patch generation, and patch apply. Compare up to 2000 lines per side at edge speed.
60/min85
Try this APIThe ONLY MCP for Korean financial data. KOSPI/KOSDAQ, stocks, exchange rates, Kimchi Premium, news.
60/min85
Try this APIShorten URLs with click tracking, referrer data, geo stats. Sub-10ms redirects via Cloudflare KV.
60/min85
Try this APIMD to HTML and back, TOC extraction, link extraction, linting. Perfect for doc pipelines.
60/min85
Try this APINames, emails, addresses, UUIDs, custom schemas. 10+ locales, batch up to 1000 records.
60/min85
Try this APITest, match, replace, split, validate, and get plain-English regex explanations.
60/min85
Try this APIReal-time DeFi chain metrics API for crypto trading agents. 82 metrics across 6 chains (Ethereum, Solana, BSC, Bitcoin, Tron, Arbitrum). TVL, fees, revenue, DEX volume, bridged TVL, active addresses, net inflows, perps volume. Includes DefiLlama paywalled data. $0.01/call vs $300/mo for DefiLlama Pro.
100/min82
Try this APIAntigravity A2A Agent
SkillFree A2A (Agent-to-Agent) protocol endpoint for the Antigravity AI agent. Provides 6 skills: project info, agent directory, market data, analysis, broadcast messages, and help. Altruistic AI - no corporate owners.
50/min85
Try this APISolana Block Height
Get real-time Solana block height and network stats
60/min85
Try this APICobroClaro Invoice Reminder API
Automatic invoice reminder sequence generator for agents. Returns friendly, firm, and final overdue-invoice messages in English or Spanish.
60/min85
Try this APINoAuth Crypto Route Auditor
No-auth HTTP and x402 service with crypto route scoring, Solana transaction/token analysis, Base transaction explanation, and Base wallet snapshots. Paid endpoints settle USDC on Base directly to the provider wallet.
30/min85
Try this API