# Umbra — agent index > Market-event intelligence for crypto and tokenized finance. Curated > spread, funding and price-movement events for people (Umbra Workspace) > and machines (Umbrafeed). Umbra provides monitoring and data only: it does not hold funds, connect to exchange accounts or execute orders, and nothing it publishes is investment advice. Every page below is plain markdown. Fetch the smallest relevant one before falling back to the whole corpus. This file is served at https://umbrafeed.com/agents. A human-readable explanation of the two modes, with a FAQ, is at https://umbrafeed.com/for-agents. Facts verified: 2026-08-31. Canonical human site: https://umbrafeed.com ## Key facts Verified 2026-08-31. Each row links to the page that proves it, in agent mode where that page has a markdown twin. | Fact | Value | Source | | --- | --- | --- | | CEX venues monitored | 12 — Binance, Aster, BingX, Gate, OKX, Bitget, Hyperliquid, HTX, KuCoin, Bybit, Phemex, MEXC | https://umbrafeed.com/en/markets | | DEX chains monitored | 4 — Ethereum, BSC, Base, Solana | https://umbrafeed.com/en/markets | | Event families | 3 — spread (cross-venue dislocation), funding (rate divergence), splash (price spike) | https://umbrafeed.com/agents/product/workspace.md | | Workspace plans | Free, Trader $19/month, Pro $29/month | https://umbrafeed.com/agents/pricing.md | | Umbrafeed (machine) plans | Free $0, Builder $19/month, Pro $49/month, Commercial from $149/month (negotiated); x402 is a published offer with no deployed route | https://umbrafeed.com/agents/pricing.md | | Spread OPEN delay by tier | 60 seconds on Free, 30 seconds on Builder, live on Pro | https://docs.umbrafeed.com/agents/access-tiers.md | | REST rate limits by tier | 60 req/min on Free, 600 on Builder, 3,000 on Pro | https://docs.umbrafeed.com/agents/rate-limits.md | | Retained history by tier | 1 hour on Free, 1 week on Builder, deeper on Pro | https://docs.umbrafeed.com/agents/access-tiers.md | | Machine transports | REST (/api/v1/data), MCP (/mcp), authenticated WebSocket, signed webhooks | https://docs.umbrafeed.com/agents/availability.md | | Order execution | None. Umbra holds no funds, connects to no exchange accounts and places no orders | https://umbrafeed.com/agents/legal/risk-disclosure.md | ## Frequently asked questions ### What is Umbra? Umbra is a market-event intelligence platform for crypto and tokenized finance. It watches 12 centralized exchanges and 4 DEX chains and turns raw venue observations into curated spread, funding and price-movement events. Two products consume that stream: Umbra Workspace for people, and Umbrafeed for machines. Umbra provides monitoring and data only — it never executes trades. ### Does Umbra execute trades or hold funds? No. Umbra holds no funds, connects to no exchange accounts and places no orders. There are no order, custody or account-connection endpoints on any surface, and none are planned on the public API. Nothing Umbra publishes is investment advice. An agent must not infer an execution capability from a spread event. ### How does an AI agent connect to Umbra? Two MCP servers, and they are not interchangeable. `https://umbrafeed.com/mcp` is free and unauthenticated and answers questions about the platform through three tools: `umbra_overview`, `umbra_search` and `umbra_get_page`. `https://api.umbrafeed.com/mcp` serves live market events and needs a machine-plan API key from the Builder tier up. ### What does Umbrafeed cost? Umbrafeed has three self-serve tiers: Free at $0, Builder at $19 per month and Pro at $49 per month. Commercial starts at $149 per month and is negotiated on contact; x402 is a published offer with no deployed payment route. Umbra Workspace is priced separately — Free, Trader at $19, Pro at $29 per month. The two ladders are independent; a Workspace plan grants no machine access. ### Which exchanges and chains does Umbra cover? Twelve centralized venues: Binance, Aster, BingX, Gate, OKX, Bitget, Hyperliquid, HTX, KuCoin, Bybit, Phemex and MEXC. Four DEX chains: Ethereum, BSC, Base and Solana. Spot and futures markets are monitored per venue. Coverage changes over time, so cite the venue pages at umbrafeed.com/en/markets rather than a remembered count. ### How fresh is Umbrafeed data? Freshness is tier-gated through a `delay` parameter. Spread OPEN events are delayed 60 seconds on Free, 30 seconds on Builder, and served live on Pro. The detection pipeline itself is sub-second under normal operating conditions, but delivery varies. Any latency figure holds only for the tier it is stated on. ### What are the Umbrafeed rate limits? Limits are enforced per consumer at the gateway: 60 requests per minute on Free, 600 on Builder and 3,000 on Pro. WebSocket connections count against a separate concurrency budget. Every response carries `RateLimit-Limit`, `RateLimit-Remaining` and `RateLimit-Reset`. Going over returns 429 with a `Retry-After` header in seconds. ### How do I authenticate against the Umbrafeed API? Machine routes sit behind Kong. Send your key either as an `apikey` request header or as `Authorization: Bearer` — both forms are accepted on REST, WebSocket upgrades and MCP, and `Authorization` wins if both are present. Keys come from a machine plan, which decides which surfaces the key reaches, its freshness bounds and its quota. ### What is the difference between spread, funding and splash events? A spread event is a cross-venue price dislocation, carrying route, market type, lifecycle and execution-quality context. A funding event is a raw cross-venue funding-rate difference with settlement and venue-side context. A splash event is a fast price movement with direction, venue and the measured time window. All three are observations, not recommendations. ### Where is the machine-readable version of the Umbra docs? Every page exists twice. The site itself is the human version; `umbrafeed.com/agents/index.md` and `docs.umbrafeed.com/agents/index.md` are the agent versions, listing each page as plain markdown at `/agents/.md`. Whole-corpus dumps live at `/llms-full.txt`, and `/llms.txt` is the link index. ## Overview - [Umbra — platform overview](https://umbrafeed.com/agents/overview.md) - [Contact](https://umbrafeed.com/agents/contact.md) ## Products - [Umbra Workspace](https://umbrafeed.com/agents/product/workspace.md) - [Umbrafeed — machine data product](https://umbrafeed.com/agents/product/umbrafeed.md) - [Spread Alerts](https://umbrafeed.com/agents/product/spread-alerts.md) - [Price Spike Alerts](https://umbrafeed.com/agents/product/price-spike-alerts.md) - [Funding Rate Alerts](https://umbrafeed.com/agents/product/funding-rate-alerts.md) - [Market Data](https://umbrafeed.com/agents/product/market-data.md) ## Pricing - [Pricing — Workspace and Umbrafeed plans](https://umbrafeed.com/agents/pricing.md) ## Concepts and guides - [What Is Crypto Arbitrage? Types, Risks & How It Works in 2026](https://umbrafeed.com/agents/learn/what-is-crypto-arbitrage.md) - [How Do Crypto Trading Alerts Work? Types, Platforms & Setup Guide](https://umbrafeed.com/agents/learn/how-do-crypto-trading-alerts-work.md) - [What Is Funding Rate Arbitrage? How It Works, Risks & Strategies](https://umbrafeed.com/agents/learn/what-is-funding-rate-arbitrage.md) - [How to Detect Crypto Pump and Dump Schemes: Signs, Tools & Protection](https://umbrafeed.com/agents/learn/how-to-detect-pump-and-dump-crypto.md) - [How Crypto Arbitrage Works in 2026: Margins, Costs & Structural Constraints](https://umbrafeed.com/agents/learn/is-crypto-arbitrage-profitable.md) - [What Is a Crypto Spread? Bid-Ask, Cross-Exchange & How to Reduce It](https://umbrafeed.com/agents/learn/what-is-a-crypto-spread.md) - [Best Crypto Arbitrage Scanners in 2026: Features, Pricing & Comparison](https://umbrafeed.com/agents/learn/best-crypto-arbitrage-scanner-2026.md) - [Crypto Funding Rates Explained: How They Work, Where to Check & Trading Strategies](https://umbrafeed.com/agents/learn/crypto-funding-rate-explained.md) ## Research - [Cross-Exchange Arbitrage: How Crypto Price Gaps Create Opportunities](https://umbrafeed.com/agents/research/cross-exchange-crypto-arbitrage.md) - [Spread Trading in Crypto: Basis, Funding Rates, and Market-Neutral Strategies](https://umbrafeed.com/agents/research/understanding-spread-trading-crypto.md) - [Real-Time Market Surveillance: Why Event Infrastructure Matters](https://umbrafeed.com/agents/research/real-time-market-surveillance-crypto.md) - [Price Spike Detection: How to Catch Pumps and Dumps in Real Time](https://umbrafeed.com/agents/research/detecting-price-spikes-and-dumps.md) - [CEX vs DEX: Where the Best Arbitrage Opportunities Hide](https://umbrafeed.com/agents/research/cex-vs-dex-arbitrage.md) - [Funding Rate Alerts: Catching Divergences Across Binance, Bybit, and Hyperliquid](https://umbrafeed.com/agents/research/funding-rate-alerts-guide.md) ## Venue coverage - [Binance coverage](https://umbrafeed.com/agents/market/binance.md) - [Bybit coverage](https://umbrafeed.com/agents/market/bybit.md) - [MEXC coverage](https://umbrafeed.com/agents/market/mexc.md) - [Gate.io coverage](https://umbrafeed.com/agents/market/gate-io.md) - [BingX coverage](https://umbrafeed.com/agents/market/bingx.md) - [Bitget coverage](https://umbrafeed.com/agents/market/bitget.md) - [OKX coverage](https://umbrafeed.com/agents/market/okx.md) - [KuCoin coverage](https://umbrafeed.com/agents/market/kucoin.md) - [HTX coverage](https://umbrafeed.com/agents/market/htx.md) - [Phemex coverage](https://umbrafeed.com/agents/market/phemex.md) - [Hyperliquid coverage](https://umbrafeed.com/agents/market/hyperliquid.md) - [Aster coverage](https://umbrafeed.com/agents/market/aster.md) - [Ethereum DEX coverage](https://umbrafeed.com/agents/market/ethereum-dex.md) - [BSC DEX coverage](https://umbrafeed.com/agents/market/bsc-dex.md) - [Solana DEX coverage](https://umbrafeed.com/agents/market/solana-dex.md) - [Base DEX coverage](https://umbrafeed.com/agents/market/base-dex.md) ## Legal - [Terms of Service](https://umbrafeed.com/agents/legal/terms.md) - [Privacy Policy](https://umbrafeed.com/agents/legal/privacy.md) - [Cookie Policy](https://umbrafeed.com/agents/legal/cookies.md) - [Risk Disclosure](https://umbrafeed.com/agents/legal/risk-disclosure.md) - [Billing Terms](https://umbrafeed.com/agents/legal/billing.md) - [Legal Notice](https://umbrafeed.com/agents/legal/notice.md) ## Developer documentation - [Developers](https://umbrafeed.com/agents/developers.md) ## Whole corpus - [Everything in one file](https://umbrafeed.com/llms-full.txt) - [Link index](https://umbrafeed.com/llms.txt) (alias: https://umbrafeed.com/agents.txt) ## API documentation The Umbrafeed API docs are a separate site with its own agent mirror: https://docs.umbrafeed.com/agents/index.md ## Live tool access - Umbra knowledge MCP (free, no auth): `https://umbrafeed.com/mcp` — tools `umbra_overview`, `umbra_search`, `umbra_get_page`. - Umbrafeed docs MCP (free, no auth): `https://docs.umbrafeed.com/mcp` — API integration questions, endpoint contracts. - Umbrafeed data MCP (authenticated, Builder plan and up): `https://api.umbrafeed.com/mcp` — live market events. ## Notes - Content is published in English, French and Russian; this mirror is English. - Umbra Workspace and Umbrafeed are priced on two separate ladders. Do not quote one product's plan names for the other. - Event freshness is tier-gated. Any latency figure only holds for the tier it is stated on. - Coverage counts change; cite the venue pages rather than a remembered number.