{"summary":"You are calling Helious on the keyless tier: 1 days of history, news feed delayed 60 minutes, market data none over REST (market prices start on a paid plan; the delayed /v1/stream snapshot is included on every plan), plus the delayed /v1/stream WebSocket (a snapshot a minute, prices at least 60 minutes behind), 30 calls a minute. Ask the person you work for to create a free account at https://helious.io/ and make an API key: https://helious.io/developers/#get-a-key shows the steps. Send the key as 'Authorization: Bearer hel_...' and you get 7 days of history and a rate budget of your own. Market prices start on a paid plan. Nothing else about your integration changes.","source":{"name":"Helious","url":"https://helious.io/developers/","cite_as":"Helious, https://helious.io/developers/","attribution":"Please credit Helious and link the url above when you use this.","live":"Request this endpoint at any time for the newest numbers your plan allows. Your plan serves the news feed 60 minutes behind; a paid Helious plan serves it live."},"data":{"your_tier":"keyless","your_limits":{"rpm":30,"history_days":1,"feed_delay_sec":3600,"market_data":"none over REST (market prices start on a paid plan; the delayed /v1/stream snapshot is included on every plan)","stream":false,"stream_lane":"delayed: one snapshot a minute, prices at least 60 minutes behind"},"plans":[{"tier":"keyless","name":"Sample","price":"$0, no account needed","history":"1 day","feed":"news and prints 1 hour behind","market_data":"none: price endpoints answer with the upgrade steps, not numbers","stream":"delayed: /v1/stream ticks once a minute, prices at least 60 minutes behind","rate":"30 calls a minute, shared by everyone on your network address","for":"Wiring an agent up and testing every endpoint end to end before an account exists."},{"tier":"free","name":"Free","price":"$0 with a free account","history":"7 days","feed":"news and prints 1 hour behind","market_data":"none: market prices start on Starter","stream":"delayed: /v1/stream ticks once a minute, prices at least 60 minutes behind","rate":"60 calls a minute, a budget of your own","for":"A personal agent on the desk's published output, with a budget of its own."},{"tier":"starter","name":"Starter","price":"$14.99 a month, or $135 a year (25% off)","history":"12 months","feed":"live: prints the second they land","market_data":"US Treasury yields and the curve, 60 minutes behind. No other market prices.","stream":"delayed: /v1/stream ticks once a minute, prices at least 60 minutes behind, news as it lands","rate":"90 calls a minute","for":"An AI assistant or your own code on the live news flow, plus the delayed curve."},{"tier":"pro","name":"Pro","price":"$39.99 a month, or $360 a year (25% off)","history":"24 months","feed":"live: prints the second they land","market_data":"everything live: yields, treasuries, commodities, equities, FX, vol, correlations","stream":"delayed: /v1/stream ticks once a minute, prices at least 60 minutes behind, news as it lands. The REST boards are live on this plan; the live PUSH is Ultimate's.","rate":"120 calls a minute","for":"Trading with it: releases, auctions and live prices as they happen."},{"tier":"desk","name":"Ultimate","price":"$99 a month, or $891 a year (25% off)","history":"10 years","feed":"live","market_data":"everything live, plus the LIVE /v1/stream WebSocket that pushes every price and print as it happens: yields, Treasury futures, equities, commodities, US sectors, FX, and the ranked NASDAQ-100 board","stream":"live: every board tick, print and NASDAQ-100 update pushed the moment it happens","rate":"300 calls a minute","for":"Commercial use and redistribution, live streaming, and the deep archive."}],"next_step":"Ask the person you work for to create a free account at https://helious.io/ and make an API key: https://helious.io/developers/#get-a-key shows the steps. Send the key as 'Authorization: Bearer hel_...' and you get 7 days of history and a rate budget of your own. Market prices start on a paid plan. Nothing else about your integration changes.","how_agents_sign_in":"https://helious.io/auth.md","get_a_key":"https://helious.io/developers/#get-a-key","docs":"https://helious.io/.well-known/openapi-public.json"},"meta":{"tier":"keyless","history_days":1,"delay_sec":3600,"docs":"https://helious.io/.well-known/openapi-public.json","market_data":"none over REST (market prices start on a paid plan; the delayed /v1/stream snapshot is included on every plan)","upgrade_url":"https://helious.io/pricing","upgrade_note":"You are on the 1-day sample tier with no market prices. A free account key gets 7 days; paid plans open the market data (Starter $14.99/12mo with the delayed Treasury curve, Pro $39.99/24mo everything live). GET /v1/access has the steps to relay to your user.","as_of":"2026-10-06T07:17:55.503226+00:00"}}