Added value: +{
+  "description": "IANA timezone id (e.g. \"America/Sao_Paulo\") used to localize the DSL's hour()/minute()/dayOfWeek()/isWeekend() functions, for time-of-day or weekday gating conditions. Omit/null defaults to \"America/Sao_Paulo\".",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Previous value: -"Optional. Same shape as submit_backtest's own confirmationSources — applied identically to every asset pair in this batch (one shared confirmationSources gate, not one per asset). A sourceId that doesn't exist, isn't Completed, or belongs to another account fails that item only (same best-effort semantics as an unknown asset pair), not the whole batch."New value: +"Optional. A JSON-encoded STRING (not a native array/object — pass it exactly like a quoted string value), containing the same shape as submit_backtest's own confirmationSources: [{\"sourceId\":\"<a submit_confirmation_source id>\",\"signalType\":\"entry\",\"validityWindow\":{\"count\":1}}]. Applied identically to every asset pair in this batch (one shared gate, not one per asset). Passed as a raw JSON string rather than a native array because this tool already has one array parameter (assetPairs) — a second one crashes the MCP SDK's own parameter marshaller. A sourceId that doesn't exist, isn't Completed, or belongs to another account fails that item only (same best-effort semantics as an unknown asset pair), not the whole batch."

Removed value: -{
-  "description": "One confirmation requirement: this backtest's own candidate Entry/Exit only counts as a trade once sourceId's own signal timeline is corroborated within validityWindow.",
-  "properties": {
-    "signalType": {
-      "description": "\"entry\" or \"exit\" — which of the source's signal types counts as confirming. Defaults to \"entry\" when omitted.",
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "sourceId": {
-      "description": "The id returned by submit_confirmation_source (same account only) whose signal timeline this backtest's candidates must be corroborated by.",
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "validityWindow": {
-      "description": "An OBJECT, not a bare number — e.g. { \"count\": 5 }. Defaults to { \"count\": 1 } when omitted.",
-      "properties": {
-        "count": {
-          "description": "Number of candles of the source's own timeframe. Defaults to 1 when omitted.",
-          "type": "integer"
-        }
-      },
-      "type": [
-        "object",
-        "null"
-      ]
-    }
-  },
-  "required": [
-    "sourceId"
-  ],
-  "type": [
-    "object",
-    "null"
-  ]
-}

Previous value: -[
-  "array",
-  "null"
-]New value: +[
+  "string",
+  "null"
+]

Previous value: -"How recent the source's own signal must be, expressed in candles of the SOURCE's own timeframe — not a fixed duration, so it scales automatically with whichever strategy is confirming."New value: +"An OBJECT, not a bare number — e.g. { \"count\": 5 }. Defaults to { \"count\": 1 } when omitted."

Added value: +{
+  "default": null,
+  "description": "Optional. Same shape as submit_backtest's own confirmationSources — applied identically to every asset pair in this batch (one shared confirmationSources gate, not one per asset). A sourceId that doesn't exist, isn't Completed, or belongs to another account fails that item only (same best-effort semantics as an unknown asset pair), not the whole batch.",
+  "items": {
+    "description": "One confirmation requirement: this backtest's own candidate Entry/Exit only counts as a trade once sourceId's own signal timeline is corroborated within validityWindow.",
+    "properties": {
+      "signalType": {
+        "description": "\"entry\" or \"exit\" — which of the source's signal types counts as confirming. Defaults to \"entry\" when omitted.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "sourceId": {
+        "description": "The id returned by submit_confirmation_source (same account only) whose signal timeline this backtest's candidates must be corroborated by.",
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "validityWindow": {
+        "description": "How recent the source's own signal must be, expressed in candles of the SOURCE's own timeframe — not a fixed duration, so it scales automatically with whichever strategy is confirming.",
+        "properties": {
+          "count": {
+            "description": "Number of candles of the source's own timeframe. Defaults to 1 when omitted.",
+            "type": "integer"
+          }
+        },
+        "type": [
+          "object",
+          "null"
+        ]
+      }
+    },
+    "required": [
+      "sourceId"
+    ],
+    "type": [
+      "object",
+      "null"
+    ]
+  },
+  "type": [
+    "array",
+    "null"
+  ]
+}

Previous value: -"Named computed values, one JSON-string expression each, evaluated once per candle. Raw fields: close, open, high, low, volume. Built-in functions (case-sensitive, lowercase — no others exist, e.g. avg()/SMA() uppercase/close[N] bracket indexing are NOT supported): ema(series,period), sma(series,period), rsi(series,period), atr(period), adx(period), adxPlusDi(period), adxMinusDi(period), crossUp(a,b), crossDown(a,b), highest(series,n), lowest(series,n), change(series), volumeSma(period), volumeSpike(multiplier), body(), range(), upperWick(), lowerWick(), abs(x), min(a,b), max(a,b). Candlestick patterns (all no-arg, boolean, read only closed-candle OHLC, same in backtest and live): single-candle hammer(), shootingStar(), doji(), bullishMarubozu(), bearishMarubozu(), spinningTop(), dragonflyDoji(), gravestoneDoji(), longLeggedDoji(); two-candle bullishEngulfing(), bearishEngulfing(), piercingLine(), darkCloudCover(), bullishHarami(), bearishHarami(), haramiCross(), tweezerTop(), tweezerBottom(); three-plus-candle morningStar(), eveningStar(), threeWhiteSoldiers(), threeBlackCrows(), threeInsideUp(), threeInsideDown(), threeOutsideUp(), threeOutsideDown(), risingThreeMethods(), fallingThreeMethods(). Caveat: hammer()/shootingStar() are shape-only, no prior-trend check (same shape is Hammer in a downtrend but Hanging Man in an uptrend, and vice versa for shootingStar/Inverted Hammer) — pair with a trend/momentum condition rather than using the shape alone. An input may only reference inputs defined above it (no forward/circular references). Example: {\"emaFast\":\"ema(close, 9)\",\"emaSlow\":\"ema(close, 21)\"}"New value: +"Named computed values, one JSON-string expression each, evaluated once per candle. Raw fields: close, open, high, low, volume. Built-in functions (case-sensitive, lowercase — no others exist, e.g. avg()/SMA() uppercase/close[N] bracket indexing are NOT supported): ema(series,period), sma(series,period), rsi(series,period), atr(period), adx(period), adxPlusDi(period), adxMinusDi(period), crossUp(a,b), crossDown(a,b), highest(series,n), lowest(series,n), change(series), shift(series,n) [look-back only, NaN before enough history], any(boolSeries,n), all(boolSeries,n), count(boolSeries,n) [over the n candles before the current one], swingHigh(series,confirmBars), swingLow(series,confirmBars) [confirmed N-bar swing point, true confirmBars candles AFTER the actual peak/trough — never at the peak itself, so it can't repaint between backtest and live], body(), range(), upperWick(), lowerWick(), isBullish(), isBearish(), abs(x), min(a,b), max(a,b). There is no volumeSma()/volumeSpike() — volume is a plain series like close/open/high/low, so use sma(volume,period) and volume > sma(volume,period) * multiplier instead. Candlestick patterns (all no-arg, boolean, read only closed-candle OHLC, same in backtest and live): single-candle hammer(), shootingStar(), doji(), bullishMarubozu(), bearishMarubozu(), spinningTop(), dragonflyDoji(), gravestoneDoji(), longLeggedDoji(); two-candle bullishEngulfing(), bearishEngulfing(), piercingLine(), darkCloudCover(), bullishHarami(), bearishHarami(), haramiCross(), tweezerTop(), tweezerBottom(); three-plus-candle morningStar(), eveningStar(), threeWhiteSoldiers(), threeBlackCrows(), threeInsideUp(), threeInsideDown(), threeOutsideUp(), threeOutsideDown(), risingThreeMethods(), fallingThreeMethods(). Caveat: hammer()/shootingStar() are shape-only, no prior-trend check (same shape is Hammer in a downtrend but Hanging Man in an uptrend, and vice versa for shootingStar/Inverted Hammer) — pair with a trend/momentum condition rather than using the shape alone. An input may only reference inputs defined above it (no forward/circular references). Example: {\"emaFast\":\"ema(close, 9)\",\"emaSlow\":\"ema(close, 21)\"}"

Previous value: -"Named computed values, one JSON-string expression each, evaluated once per candle. Raw fields: close, open, high, low, volume. Built-in functions (case-sensitive, lowercase — no others exist, e.g. avg()/SMA() uppercase/close[N] bracket indexing are NOT supported): ema(series,period), sma(series,period), rsi(series,period), atr(period), adx(period), adxPlusDi(period), adxMinusDi(period), crossUp(a,b), crossDown(a,b), highest(series,n), lowest(series,n), change(series), volumeSma(period), volumeSpike(multiplier), body(), range(), upperWick(), lowerWick(), abs(x), min(a,b), max(a,b). An input may only reference inputs defined above it (no forward/circular references). Example: {\"emaFast\":\"ema(close, 9)\",\"emaSlow\":\"ema(close, 21)\"}"New value: +"Named computed values, one JSON-string expression each, evaluated once per candle. Raw fields: close, open, high, low, volume. Built-in functions (case-sensitive, lowercase — no others exist, e.g. avg()/SMA() uppercase/close[N] bracket indexing are NOT supported): ema(series,period), sma(series,period), rsi(series,period), atr(period), adx(period), adxPlusDi(period), adxMinusDi(period), crossUp(a,b), crossDown(a,b), highest(series,n), lowest(series,n), change(series), volumeSma(period), volumeSpike(multiplier), body(), range(), upperWick(), lowerWick(), abs(x), min(a,b), max(a,b). Candlestick patterns (all no-arg, boolean, read only closed-candle OHLC, same in backtest and live): single-candle hammer(), shootingStar(), doji(), bullishMarubozu(), bearishMarubozu(), spinningTop(), dragonflyDoji(), gravestoneDoji(), longLeggedDoji(); two-candle bullishEngulfing(), bearishEngulfing(), piercingLine(), darkCloudCover(), bullishHarami(), bearishHarami(), haramiCross(), tweezerTop(), tweezerBottom(); three-plus-candle morningStar(), eveningStar(), threeWhiteSoldiers(), threeBlackCrows(), threeInsideUp(), threeInsideDown(), threeOutsideUp(), threeOutsideDown(), risingThreeMethods(), fallingThreeMethods(). Caveat: hammer()/shootingStar() are shape-only, no prior-trend check (same shape is Hammer in a downtrend but Hanging Man in an uptrend, and vice versa for shootingStar/Inverted Hammer) — pair with a trend/momentum condition rather than using the shape alone. An input may only reference inputs defined above it (no forward/circular references). Example: {\"emaFast\":\"ema(close, 9)\",\"emaSlow\":\"ema(close, 21)\"}"

Added value: +{
+  "description": "Simulated exchange fee on entry, as a percent (e.g. 0.1 = 0.1%). Omit/null = 0 (no fee, backward compatible). Subtracted from every trade's pnlR/pnlPct so results are net-of-fee by construction. 0-5 range. See the pnlR/expectancyR field descriptions on get_backtest_result for the R-vs-% caveat once a fee is set.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Simulated exchange fee on exit, as a percent (e.g. 0.1 = 0.1%). Same semantics as EntryFeePct — real exchanges can charge different maker/taker rates per leg, so this is independent, not assumed equal.",
+  "type": [
+    "number",
+    "null"
+  ]
+}