# CoinGecko Market Watchlist - Prices, Volume & Changes

Monitor CoinGecko public coin-market observations for a configured watchlist. Compare saved price and market metadata with timestamps. Bounded snapshots, not a trading feed.

Canonical product page: https://mayd-it.com/data-tools/actors/coingecko-market-watchlist-monitor/

## Example input

```json
{
  "coinIds": [
    "bitcoin"
  ],
  "maxResults": 5
}
```

## Full guide

# CoinGecko Market Watchlist - Prices, Volume & Changes

**Keep coin identity, source freshness and market values explicit, with comparisons that distinguish the source's 24-hour change from changes between your own observations.**

Monitor exact CoinGecko coin IDs with USD prices, market caps, volumes, source timestamps and saved comparisons. Clear missing-data handling and CSV/JSON exports. Public API; no trading or wallet access.

## Start in under a minute

1. Paste coingecko coin ids into the first input field, or use the included sample.
2. Keep the five-result limit for your first run and choose **Start**.
3. Open **Observations**, **Scope and diagnostics**, or the **Readable run report** in Output. Export CSV or JSON from the dataset.

```json
{
  "coinIds": [
    "bitcoin"
  ],
  "maxResults": 5
}
```

No source account, API key, paid proxy or extra subscription is required for these public endpoints. Source availability and rate limits still apply.

## Who this helps

Researchers and dashboard builders maintaining small crypto market watchlists.

## What you receive

One row per unique confirmed observation. Keyword filters inspect titles and taglines within the current feed window; they do not expand source coverage. Source timestamps that merely refresh do not create a change by themselves. Every row includes a stable `recordId`, title, source URL and observation time.

| Field | Meaning |
|---|---|
| `coinId` | Source-reported coin id; missing optional values remain null. |
| `symbol` | Source-reported symbol; missing optional values remain null. |
| `currency` | Source-reported currency; missing optional values remain null. |
| `price` | Source-reported price; missing optional values remain null. |
| `marketCap` | Source-reported market cap; missing optional values remain null. |
| `volume24h` | Source-reported volume24h; missing optional values remain null. |
| `priceChangePercent24h` | Source-reported price change percent24h; missing optional values remain null. |
| `lastUpdatedAt` | Source-reported last updated at; missing optional values remain null. |
| `comparisonStatus` | not_requested, new, changed or unchanged |
| `changedFields` | Fields different from your last saved observation |
| `previous` | Previous saved source values when comparison is enabled |

## Saved comparisons

Enable **Compare with saved observations**, choose a snapshot name, and reuse the same input scope. The first run establishes history; it cannot report changes before that point. Enable **Save only new or changed observations** for later runs if you want a change-only export. An unchanged run can correctly save zero rows.

Only confirmed saved rows advance history. A bounded or failed run never establishes that a missing record was deleted. History is stored in a named key-value store in the running user's account. Use one writer per snapshot: do not overlap runs against the same snapshot. Change the snapshot name when starting a new independent workflow.

## Scope and limitations

Current CoinGecko USD market snapshots for exact coin IDs, not ticker resolution. Source prices can be delayed or cached; lastUpdatedAt is retained. Public API rate limits apply. No historical candles, trading execution, investment advice or prediction.

At most ten input values and five hundred saved rows per run. Each input performs one bounded public source request. Each exact coin ID returns at most one observation. Responses are capped at 8 MiB and share the run deadline. No authentication bypass or code execution is performed. HTTP 429 stops further requests. Source failures appear in SUMMARY and the HTML report, never as paid data rows.

## Pricing

The configured base price is **$0.001 per saved observation**, plus **$0.00005 per start** at the default memory. Five observations cost $0.00505 at that base rate. Applicable plan discounts and the Store pricing panel govern actual charges. Set a maximum charge in Run options. Diagnostics, reports and unchanged skipped rows are not dataset result events.

## Make it recurring

Save an Actor task with your inputs, then attach an Apify Schedule. For change detection, keep the same snapshot and avoid overlapping runs. Add an integration to deliver results to your own spreadsheet or workflow. No external delivery is enabled automatically.

## Examples

1. **CoinGecko coin IDs: bitcoin** — A bounded bitcoin observation sample. Review source evidence and export rows or compare them in a later run.
2. **CoinGecko coin IDs: ethereum** — A bounded ethereum observation sample. Review source evidence and export rows or compare them in a later run.
3. **CoinGecko coin IDs: solana** — A bounded solana observation sample. Review source evidence and export rows or compare them in a later run.

## Source and support

[Official source documentation](https://docs.coingecko.com/reference/coins-markets). This independent Mayd IT tool is not affiliated with the source platform. Open an Actor issue with the run ID and expected result, or contact bmay@mayd-it.com. Never include credentials.