> Source: https://ashareapi.com/en/docs/endpoints/backtest/ · Markdown version for LLMs / AI agents Pro endpoint · Pro # Quant backtest (single-stock live / portfolio precomputed) API Run a built-in strategy over history and get return / risk metrics (optionally the equity curve). Two modes: `mode=single` (default) backtests one stock in real time — pass `code` + `strategy`; `mode=portfolio` looks up a precomputed multi-stock result — pass `strategy`. Costs are included: commission (0.03%, min ¥5), stamp duty (0.05%, sell side), transfer fee (Shanghai) and slippage (0.1%). Constraints are included: price limits (no fill when sealed) and suspensions (no fill without a quote). ⚠️ ST status uses the current list as an approximation (no public source for day-by-day history) — ST names are about 3.6% of the market and the effect is limited to price-limit days. ⚠️ NOT included: market impact and capacity. ⚠️ Past performance does not indicate future results; research use only, not investment advice. Paid tier — Pro (¥99) and above, 100 calls/day. Pro `GET /v1/backtest` Signature ``` GET /v1/backtest?mode=list ``` One-liner ``` curl "https://api.ashareapi.com/v1/backtest?mode=list&key=YOUR_KEY" ``` Parameters: `mode · strategy · code · start · end · initial_cash · include_equity` * = required ## Quick start Replace the key below with yours (free endpoints need no key): curl ``` # 推荐：Authorization 头（密钥不进日志） curl -H "Authorization: Bearer YOUR_KEY" \ "https://api.ashareapi.com/v1/backtest?mode=list" # 快速测试：直接浏览器打开（?key= 会留在日志/历史里，别用于生产） curl "https://api.ashareapi.com/v1/backtest?mode=list&key=YOUR_KEY" ``` Python ``` import requests r = requests.get( "https://api.ashareapi.com/v1/backtest", headers={"Authorization": "Bearer YOUR_KEY"}, params={}, timeout=30, ) print(r.json()) ``` JavaScript ``` const r = await fetch("https://api.ashareapi.com/v1/backtest?mode=list", { headers: { Authorization: "Bearer YOUR_KEY" }, }); console.log(await r.json()); ``` ## Parameters | | | Parameter | Type | Required | Description | | mode | string | No | single = backtest one stock in real time; portfolio = look up a precomputed multi-stock result | | strategy | string | No | Built-in strategy name (see /v1/strategies for the full list and parameters) | | code | string | No | Stock code with market prefix: sh600667 (SH), sz000001 (SZ), hk00700 (HK), usAAPL (US) | | start | string | No | Backtest start date YYYY-MM-DD | | end | string | No | Backtest end date YYYY-MM-DD (blank = latest) | | initial_cash | number | No | Initial capital, default 1,000,000 | | include_equity | boolean | No | Include the daily equity curve in the response `mode` string single = backtest one stock in real time; portfolio = look up a precomputed multi-stock result `strategy` string Built-in strategy name (see /v1/strategies for the full list and parameters) `code` string Stock code with market prefix: sh600667 (SH), sz000001 (SZ), hk00700 (HK), usAAPL (US) `start` string Backtest start date YYYY-MM-DD `end` string Backtest end date YYYY-MM-DD (blank = latest) `initial_cash` number Initial capital, default 1,000,000 `include_equity` boolean Include the daily equity curve in the response Response Unified envelope: `{ ok, endpoint, tier, elapsed_ms, source, data }` Rows live in `data`; when upstream returns nothing you get `ok:false` and **the call is not counted**. Rate limits & quota Free endpoints need no key (anonymous 5/min — 250 bars per request, 100k rows per day; solve one PoW challenge for 15/min). Paid tiers: Trial 30 · Standard 120 · Pro 300 · Unlimited 600 per minute; buyout packs are capped by total calls and never expire. [See the error code table →](/en/docs/errors) ## FAQ ### General (applies to every endpoint) Do these endpoints need an API key? **Free endpoints do not**: health, challenge, quote, kline, hot, market-overview and changedist work anonymously. **Paid endpoints do**: send `Authorization: Bearer `. ⚠️ The anonymous allowance is **tiered by caller type**: browsers (humans) get **5/min**; scripts, SDKs and AI Agents (curl, requests, axios, openai user-agent strings) get **2/min** — automated traffic is easier to abuse. Solving one PoW challenge (`GET /v1/challenge`, then send the `X-PoW` header) raises it to **15/min** regardless of type. ⚠️ Also, anonymous calls are capped at **250 bars per request and 100k rows per day** — use an API key for the full 1212 bars or unlimited daily volume. Am I charged when the upstream returns nothing or errors? **No.** When the upstream fails or returns nothing you get `ok:false` and the charge for that call is **refunded** (total_calls / usage_log / ep_log are rolled back together). Only calls that actually returned data count. How fresh is the data? Quotes (quote / kline / orderbook / changedist) are **real-time or current session**; financials, shareholders, dividends and events are **within T+1 of upstream disclosure**. The `source` field in every response tells you which data channel actually served it. Can I request several stocks in one call? **No.** `code` is a single-value parameter — one stock per call. For batches, issue concurrent calls and respect your tier per-minute limit. How do I use this from Claude / Cursor / ChatGPT? Set up MCP once, then just ask the AI — it calls the endpoint itself. MCP exposes 26 tools covering quotes, financials, screening, sectors and macro. ## Related endpoints [Full-history K-line (10y daily · raw + adjustment factors)](/en/docs/endpoints/kline-full)[Quant strategy list (20 single-stock + 9 portfolio)](/en/docs/endpoints/strategies)[Quant factor library (88 factors + 22 presets)](/en/docs/endpoints/factors)[Quant playbook library (how to judge the market · 13 playbooks)](/en/docs/endpoints/playbooks)[分时（当日 / 近 5 日盘中走势）](/en/docs/endpoints/minute)[Financial statements](/en/docs/endpoints/finance)[Money flow + boards + margin](/en/docs/endpoints/fund)[Technical indicators](/en/docs/endpoints/technical) Use it from an AI Agent? Set up MCP once, then just ask the AI — it calls the endpoint itself. [MCP setup](/en/mcp)[Pricing](/en/pricing) [← Back to the full endpoint reference](/en/endpoints)