$npx -y skills add PaulRBerg/agent-skills --skill coingecko-open-pageOpen the CoinGecko historical-data page for a coin/date in Chromium via Chrome DevTools MCP.
| 1 | # CoinGecko Historical |
| 2 | |
| 3 | Open a validated ±1-day window around the requested date in Chromium. |
| 4 | |
| 5 | ## Workflow |
| 6 | |
| 7 | 1. Require a CoinGecko coin ID and an ISO date (`YYYY-MM-DD`). Resolve a supplied name or symbol with |
| 8 | `cg search <term> -o json` before continuing. |
| 9 | |
| 10 | 2. Build the URL with the portable helper: |
| 11 | |
| 12 | ```sh |
| 13 | uv run <skill-dir>/scripts/build-url.py <coin-id> <date> |
| 14 | ``` |
| 15 | |
| 16 | Invalid IDs or calendar dates exit nonzero without opening a page. |
| 17 | |
| 18 | 3. Pass the returned URL to `mcp__chrome-devtools__new_page` with `background: false`. |
| 19 | |
| 20 | 4. Completion is `### 🌐 CoinGecko history opened — <coin-id> · <date> (±1 day)` followed by the linked page URL. Do not |
| 21 | use the macOS `open` command. Keep the helper's bare-URL stdout and validation errors undecorated. |