> TickerLayer documentation for AI agents and LLMs, the Markdown version of https://tickerlayer.com/docs/changelog
> REST base URL https://api.tickerlayer.com, API key in the `x-api-key` header. WebSocket wss://stream.tickerlayer.com?apiKey=YOUR_API_KEY.
> Any docs page reads as Markdown at its URL plus `.md`. Index: https://tickerlayer.com/llms.txt · Full API reference: https://tickerlayer.com/llms-full.txt

# Changelog

Every change to the API and its documentation, newest first. The docs rail shows the latest ten; this page keeps the last fifty.

Each entry links to the section that explains it. **REST**, **Stream**, **Data** and **x402** changes alter what the API does; **Docs** entries change how it is described.

## September 2026

- **29 Sep** · Docs · [Symbols page lists perpetuals, overnight and bond symbols too](https://tickerlayer.com/docs/rest/symbols#perpetuals-symbols)
- **29 Sep** · Docs · [Changelog page: the last 50 API and docs changes in one place](https://tickerlayer.com/docs/changelog)
- **29 Sep** · Docs · [Copy any endpoint for AI, or open any docs page as a .md file](https://tickerlayer.com/docs#ai-agents)
- **28 Sep** · Data · [Korea market status follows the 19 Nov late session, 10:00 to 16:30](https://tickerlayer.com/docs/market-status#markets-sessions)
- **28 Sep** · Data · [India stocks: 20 more large caps listed, 70 in total](https://tickerlayer.com/docs/products/stocks#stocks-markets)
- **24 Sep** · Data · [Turkey, Germany, India and 6 more stock markets now list their top 50](https://tickerlayer.com/docs/products/stocks#stocks-markets)
- **24 Sep** · Data · [USDX now has history bars; USVOL daily bars skip US market holidays](https://tickerlayer.com/docs/rest/indices#indices-agg-range)
- **23 Sep** · Data · [Fundamentals: free_float now on depositary receipts and more US stocks](https://tickerlayer.com/docs/rest/fundamentals#fundamentals-overview)
- **22 Sep** · Data · [SignalPoint history goes back to June 2026: page back with before](https://tickerlayer.com/docs/signalpoint#signalpoint-overview)
- **22 Sep** · Data · [Bonds and Fundamentals are data add-ons from 39 USD a month, self-serve](https://tickerlayer.com/data-addons#fundamentals)
- **22 Sep** · REST · [SignalPoint add-on: source and momentum trade signals under /signals](https://tickerlayer.com/docs/signalpoint#signalpoint-overview)
- **21 Sep** · Stream · [Perpetuals source rows: withdrawal frames, liveness rules, source universe](https://tickerlayer.com/docs/products/perpetuals#perpetuals-row-liveness)
- **21 Sep** · REST · [Perpetuals source-level: per-source health at /perpetuals/sources/status](https://tickerlayer.com/docs/products/perpetuals#perpetuals-sources-status)
- **21 Sep** · Stream · [US overnight session add-on: aggregated quotes 20:00 to 04:00 New York](https://tickerlayer.com/docs/products/stocks#overnight)
- **17 Sep** · REST · [Perpetuals: 24/7 quotes, marks, trades and bars for 260+ contracts](https://tickerlayer.com/docs/products/perpetuals#perpetuals-model)
- **16 Sep** · Data · [USDINR on the 4-decimal onshore grid; prev_close is the 15:30 IST close](https://tickerlayer.com/docs/products/forex)
- **14 Sep** · REST · [total_count on aggregates and X-RateLimit headers on every REST response](https://tickerlayer.com/docs/limits#headers)
- **14 Sep** · Data · [Index prev is the real prior session bar; US2000 and US1000 gain history](https://tickerlayer.com/docs/rest/indices#indices-agg-prev)
- **14 Sep** · Stream · [US stocks: settled OHLCV bars over WebSocket on stocks.agg, 1m to 1d](https://tickerlayer.com/docs/products/stocks#stocks-agg-stream)
- **10 Sep** · Docs · [Data Quality benchmarks: measured runs per asset class against selected market references](https://tickerlayer.com/data-quality)
- **10 Sep** · Stream · [Forex raw line: SYMBOL.RAW streams one venue, unblended, with tick volume](https://tickerlayer.com/docs/products/forex#forex-raw-line)
- **9 Sep** · Data · [ETF quotes outside US regular hours are held to a 0.5% spread](https://tickerlayer.com/docs/rest/etfs#etfs-quote)
- **8 Sep** · Data · [Commodity bars carry volume for energy, copper and agriculturals](https://tickerlayer.com/docs/rest/commodities#commodities-agg-range)
- **8 Sep** · Data · [Thailand, Italy and the UAE market status, with the Thai midday break](https://tickerlayer.com/docs/market-status#markets-sessions)
- **8 Sep** · Data · [Commodities market status now follows overnight reference hours](https://tickerlayer.com/docs/market-status#markets-status-detail)
- **3 Sep** · Data · [US stock bars: intraday volume is now consolidated, on the live day too](https://tickerlayer.com/docs/rest/stocks#stocks-agg-range)
- **3 Sep** · Stream · [bonds.quotes streams government bond yields: one frame per daily observation](https://tickerlayer.com/docs/websocket/messages#rate)
- **1 Sep** · Data · [Korea volatility index: served and streamed under the code KRVOL](https://tickerlayer.com/docs/rest/indices#indices-symbols-list)

## August 2026

- **31 Aug** · Docs · [Coverage check: paste a symbol list, get the exact API symbol for each](https://tickerlayer.com/symbols/check)
- **26 Aug** · Data · [Mexico and Brazil stocks: MX and BR markets live on the status API](https://tickerlayer.com/market-status/brazil)
- **25 Aug** · Data · [Argentina stocks: AR market live with hours on the status API](https://tickerlayer.com/market-status/argentina)
- **24 Aug** · Data · [Fundamentals: country_code gives the issuer origin as an ISO code](https://tickerlayer.com/docs/rest/fundamentals#fundamentals-fields)
- **24 Aug** · Stream · [stocks.status streams US trading halt and resume events live](https://tickerlayer.com/docs/websocket/messages#status)
- **22 Aug** · Stream · [Releases close streams with code 1012 and a SERVER_RESTART notice](https://tickerlayer.com/docs/websocket/troubleshooting#disconnects)
- **21 Aug** · Data · [Fundamentals: validated counts on depositary receipts, plus estimates](https://tickerlayer.com/docs/rest/fundamentals#fundamentals-fields)
- **20 Aug** · Data · [Fundamentals now covers EU markets: Germany, Spain and France](https://tickerlayer.com/docs/rest/fundamentals)
- **20 Aug** · Stream · [Forex streams: unique, strictly increasing millisecond timestamps](https://tickerlayer.com/docs/rest/forex#forex-websocket)
- **18 Aug** · REST · [Bond snapshot: previous observation and change for every tenor](https://tickerlayer.com/docs/products/bonds#bond-snapshot)
- **18 Aug** · REST · [Stock fundamentals: float, shares, sector and ownership endpoints](https://tickerlayer.com/docs/rest/fundamentals)
- **18 Aug** · REST · [Bulk status enforces the documented 1-25 item limit per request](https://tickerlayer.com/docs/market-status#markets-bulk)
- **18 Aug** · Data · [Market hours pages: live map, timelines and 2026 calendars per country](https://tickerlayer.com/market-status)
- **18 Aug** · REST · [Aggregate range errors now state the per-interval limit](https://tickerlayer.com/docs/rest/crypto#crypto-agg-range)
- **13 Aug** · Stream · [Snapshot "always" replays the last value while a market is closed](https://tickerlayer.com/docs/websocket/subscriptions#snapshot)
- **12 Aug** · Stream · [Reserve connection slots for a key so other keys can never crowd it out](https://tickerlayer.com/docs/websocket/connection#reserved-connections)
- **12 Aug** · Stream · [Every quote and trade frame now carries ts; timestamp stays where it was](https://tickerlayer.com/docs/websocket/messages#quote)
- **11 Aug** · Stream · [crypto.trades now streams every execution, so size sums to real volume](https://tickerlayer.com/docs/products/crypto#websocket-streaming)
- **7 Aug** · REST · [Market status: next_open and next_close now track the regular session](https://tickerlayer.com/docs/market-status#field-reference)
- **7 Aug** · Docs · [ChatGPT connects natively: the hosted MCP server supports OAuth](https://tickerlayer.com/mcp)
- **7 Aug** · Docs · [Official Agent Plugin: one-command install for agent clients](https://tickerlayer.com/ai/agent-plugins)
- **4 Aug** · REST · [Previous-bar routes take an optional interval](https://tickerlayer.com/docs/rest/crypto#crypto-agg-prev)