feat(synth-overlay): expand to 5min/15min markets and ETH/SOL assets

mock_data/polymarket/up_down_15min_BTC.json

@@ -0,0 +1,20 @@
+{
+  "slug": "btc-updown-15m-1772204400",
+  "start_price": 68176.05,
+  "current_time": "2026-02-27T15:04:21+00:00",
+  "current_price": 67936.60,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.0969,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.475,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-27T15:00:00+00:00",
+  "event_end_time": "2026-02-27T15:15:00+00:00",
+  "best_bid_price": 0.47,
+  "best_ask_price": 0.48,
+  "best_bid_size": 218.0,
+  "best_ask_size": 445.47,
+  "polymarket_last_trade_time": "2026-02-27T14:59:57+00:00",
+  "polymarket_last_trade_price": 0.4582,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_15min_ETH.json

@@ -0,0 +1,20 @@
+{
+  "slug": "eth-updown-15m-1772204400",
+  "start_price": 3245.12,
+  "current_time": "2026-02-27T15:04:21+00:00",
+  "current_price": 3238.45,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.3521,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.42,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-27T15:00:00+00:00",
+  "event_end_time": "2026-02-27T15:15:00+00:00",
+  "best_bid_price": 0.41,
+  "best_ask_price": 0.43,
+  "best_bid_size": 156.0,
+  "best_ask_size": 312.5,
+  "polymarket_last_trade_time": "2026-02-27T14:58:32+00:00",
+  "polymarket_last_trade_price": 0.42,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_15min_SOL.json

@@ -0,0 +1,20 @@
+{
+  "slug": "sol-updown-15m-1772204400",
+  "start_price": 142.85,
+  "current_time": "2026-02-27T15:04:21+00:00",
+  "current_price": 141.92,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.2845,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.38,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-27T15:00:00+00:00",
+  "event_end_time": "2026-02-27T15:15:00+00:00",
+  "best_bid_price": 0.37,
+  "best_ask_price": 0.39,
+  "best_bid_size": 89.0,
+  "best_ask_size": 201.3,
+  "polymarket_last_trade_time": "2026-02-27T14:57:18+00:00",
+  "polymarket_last_trade_price": 0.38,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_5min_BTC.json

@@ -0,0 +1,20 @@
+{
+  "slug": "btc-updown-5m-1772205000",
+  "start_price": 67980.25,
+  "current_time": "2026-02-27T15:16:21+00:00",
+  "current_price": 67945.80,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.4215,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.485,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-27T15:15:00+00:00",
+  "event_end_time": "2026-02-27T15:20:00+00:00",
+  "best_bid_price": 0.48,
+  "best_ask_price": 0.49,
+  "best_bid_size": 125.0,
+  "best_ask_size": 267.3,
+  "polymarket_last_trade_time": "2026-02-27T15:15:42+00:00",
+  "polymarket_last_trade_price": 0.485,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_5min_ETH.json

@@ -0,0 +1,20 @@
+{
+  "slug": "eth-updown-5m-1772205000",
+  "start_price": 3240.50,
+  "current_time": "2026-02-27T15:16:21+00:00",
+  "current_price": 3242.15,
+  "current_outcome": "Up",
+  "synth_probability_up": 0.5832,
+  "synth_outcome": "Up",
+  "polymarket_probability_up": 0.52,
+  "polymarket_outcome": "Up",
+  "event_start_time": "2026-02-27T15:15:00+00:00",
+  "event_end_time": "2026-02-27T15:20:00+00:00",
+  "best_bid_price": 0.51,
+  "best_ask_price": 0.53,
+  "best_bid_size": 98.0,
+  "best_ask_size": 184.2,
+  "polymarket_last_trade_time": "2026-02-27T15:15:38+00:00",
+  "polymarket_last_trade_price": 0.52,
+  "polymarket_last_trade_outcome": "Up"
+}

mock_data/polymarket/up_down_5min_SOL.json

@@ -0,0 +1,20 @@
+{
+  "slug": "sol-updown-5m-1772205000",
+  "start_price": 141.95,
+  "current_time": "2026-02-27T15:16:21+00:00",
+  "current_price": 142.08,
+  "current_outcome": "Up",
+  "synth_probability_up": 0.5124,
+  "synth_outcome": "Up",
+  "polymarket_probability_up": 0.48,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-27T15:15:00+00:00",
+  "event_end_time": "2026-02-27T15:20:00+00:00",
+  "best_bid_price": 0.47,
+  "best_ask_price": 0.49,
+  "best_bid_size": 72.0,
+  "best_ask_size": 145.8,
+  "polymarket_last_trade_time": "2026-02-27T15:15:29+00:00",
+  "polymarket_last_trade_price": 0.48,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_daily_ETH.json

@@ -0,0 +1,21 @@
+{
+  "slug": "ethereum-up-or-down-on-february-26",
+  "start_price": 3280.45,
+  "current_time": "2026-02-25T23:45:17.526062+00:00",
+  "current_price": 3245.82,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.3825,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.415,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-25T17:00:00+00:00",
+  "event_end_time": "2026-02-26T17:00:00+00:00",
+  "event_creation_time": "2026-02-24T17:02:40.731726+00:00",
+  "best_bid_price": 0.41,
+  "best_ask_price": 0.42,
+  "best_bid_size": 890.0,
+  "best_ask_size": 1250.0,
+  "polymarket_last_trade_time": "2026-02-25T23:42:15+00:00",
+  "polymarket_last_trade_price": 0.415,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_daily_SOL.json

@@ -0,0 +1,21 @@
+{
+  "slug": "solana-up-or-down-on-february-26",
+  "start_price": 145.62,
+  "current_time": "2026-02-25T23:45:17.526062+00:00",
+  "current_price": 142.18,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.3142,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.38,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-25T17:00:00+00:00",
+  "event_end_time": "2026-02-26T17:00:00+00:00",
+  "event_creation_time": "2026-02-24T17:02:40.731726+00:00",
+  "best_bid_price": 0.37,
+  "best_ask_price": 0.39,
+  "best_bid_size": 520.0,
+  "best_ask_size": 780.0,
+  "polymarket_last_trade_time": "2026-02-25T23:40:32+00:00",
+  "polymarket_last_trade_price": 0.38,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_hourly_ETH.json

@@ -0,0 +1,21 @@
+{
+  "slug": "ethereum-up-or-down-february-25-6pm-et",
+  "start_price": 3252.80,
+  "current_time": "2026-02-25T23:45:23.586996+00:00",
+  "current_price": 3245.82,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.2845,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.32,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-25T23:00:00+00:00",
+  "event_end_time": "2026-02-26T00:00:00+00:00",
+  "event_creation_time": "2026-02-23T23:02:47.889891+00:00",
+  "best_bid_price": 0.31,
+  "best_ask_price": 0.33,
+  "best_bid_size": 145.0,
+  "best_ask_size": 210.5,
+  "polymarket_last_trade_time": "2026-02-25T23:43:18+00:00",
+  "polymarket_last_trade_price": 0.32,
+  "polymarket_last_trade_outcome": "Down"
+}

mock_data/polymarket/up_down_hourly_SOL.json

@@ -0,0 +1,21 @@
+{
+  "slug": "solana-up-or-down-february-25-6pm-et",
+  "start_price": 143.25,
+  "current_time": "2026-02-25T23:45:23.586996+00:00",
+  "current_price": 142.18,
+  "current_outcome": "Down",
+  "synth_probability_up": 0.3521,
+  "synth_outcome": "Down",
+  "polymarket_probability_up": 0.40,
+  "polymarket_outcome": "Down",
+  "event_start_time": "2026-02-25T23:00:00+00:00",
+  "event_end_time": "2026-02-26T00:00:00+00:00",
+  "event_creation_time": "2026-02-23T23:02:47.889891+00:00",
+  "best_bid_price": 0.39,
+  "best_ask_price": 0.41,
+  "best_bid_size": 98.0,
+  "best_ask_size": 156.2,
+  "polymarket_last_trade_time": "2026-02-25T23:41:45+00:00",
+  "polymarket_last_trade_price": 0.40,
+  "polymarket_last_trade_outcome": "Down"
+}

synth_client/client.py

@@ -219,28 +219,68 @@ def get_lp_probabilities(self, asset: str) -> dict:
 
     # ─── Polymarket ──────────────────────────────────────────────────
 
-    def get_polymarket_daily(self) -> dict:
+    def get_polymarket_daily(self, asset: str = "BTC") -> dict:
         """
         Get daily up/down comparison between Synth forecasts and Polymarket prices.
 
+        Args:
+            asset: Asset symbol (BTC, ETH, SOL). Default: BTC
+
         Returns:
-            Dict with Synth vs Polymarket probability comparison (BTC)
+            Dict with Synth vs Polymarket probability comparison
         """
         return self._get(
             "/insights/polymarket/up-down/daily",
-            ["polymarket", "up_down_daily.json"],
+            ["polymarket", f"up_down_daily_{asset}.json"],
+            params={"asset": asset},
         )
 
-    def get_polymarket_hourly(self) -> dict:
+    def get_polymarket_hourly(self, asset: str = "BTC") -> dict:
         """
         Get hourly up/down comparison between Synth forecasts and Polymarket prices.
 
+        Args:
+            asset: Asset symbol (BTC, ETH, SOL). Default: BTC
+
         Returns:
-            Dict with Synth vs Polymarket probability comparison (BTC)
+            Dict with Synth vs Polymarket probability comparison
         """
         return self._get(
             "/insights/polymarket/up-down/hourly",
-            ["polymarket", "up_down_hourly.json"],
+            ["polymarket", f"up_down_hourly_{asset}.json"],
+            params={"asset": asset},
+        )
+
+    def get_polymarket_15min(self, asset: str = "BTC") -> dict:
+        """
+        Get 15-minute up/down comparison between Synth forecasts and Polymarket prices.
+
+        Args:
+            asset: Asset symbol (BTC, ETH, SOL). Default: BTC
+
+        Returns:
+            Dict with Synth vs Polymarket probability comparison
+        """
+        return self._get(
+            "/insights/polymarket/up-down/15min",
+            ["polymarket", f"up_down_15min_{asset}.json"],
+            params={"asset": asset},
+        )
+
+    def get_polymarket_5min(self, asset: str = "BTC") -> dict:
+        """
+        Get 5-minute up/down comparison between Synth forecasts and Polymarket prices.
+
+        Args:
+            asset: Asset symbol (BTC, ETH, SOL). Default: BTC
+
+        Returns:
+            Dict with Synth vs Polymarket probability comparison
+        """
+        return self._get(
+            "/insights/polymarket/up-down/5min",
+            ["polymarket", f"up_down_5min_{asset}.json"],
+            params={"asset": asset},
         )
 
     def get_polymarket_range(self) -> list:

tools/synth-overlay/README.md

@@ -20,10 +20,12 @@ Chrome extension that uses Chrome's **native Side Panel** to show Synth market c
 
 ## Synth API usage
 
-- `get_polymarket_daily()` — daily up/down (24h) Synth vs Polymarket.
-- `get_polymarket_hourly()` — hourly up/down (1h).
+- `get_polymarket_daily(asset)` — daily up/down (24h) Synth vs Polymarket.
+- `get_polymarket_hourly(asset)` — hourly up/down (1h).
+- `get_polymarket_15min(asset)` — 15-minute up/down (15m).
+- `get_polymarket_5min(asset)` — 5-minute up/down (5m).
 - `get_polymarket_range()` — range brackets with synth vs polymarket probability per bracket.
-- `get_prediction_percentiles(asset, horizon)` — used for confidence scoring (forecast spread) and optional bias in explanations; wired for both up/down and range.
+- `get_prediction_percentiles(asset, horizon)` — used for confidence scoring (forecast spread) and optional bias in explanations.
 
 ## Run locally
 
@@ -41,8 +43,9 @@ Chrome extension that uses Chrome's **native Side Panel** to show Synth market c
    You should see JSON with `"signal"`, `"edge_pct"`, etc. If you see `"error"` or 404, the slug is not supported for the current mock/API.
 
 2. **Open the exact URL** in Chrome (with the extension loaded from `extension/`):
-   - Daily (mock): `https://polymarket.com/event/bitcoin-up-or-down-on-february-26`
-   - Hourly (mock): `https://polymarket.com/event/bitcoin-up-or-down-february-25-6pm-et`
+   - Daily (BTC): `https://polymarket.com/event/bitcoin-up-or-down-on-february-26`
+   - Hourly (ETH): `https://polymarket.com/event/ethereum-up-or-down-february-25-6pm-et`
+   - 15-Min (SOL): `https://polymarket.com/event/sol-updown-15m-1772204400`
    - The side panel requests the slug from the page and fetches Synth data from the local API. If API returns 200, panel fields populate.
 
 3. **Interaction:**