# Credits and Limits | Parsium Docs

> Credit pricing, reservations, concurrency classes, and account status.

Source: https://docs.parseium.com/guides/credits-and-limits/

# Credits and Limits

## Account endpoints

 Section titled “Account endpoints”

`GET /credits` is the compatibility summary:

```
{ "creditBalance": , "concurrency": , "fetchConcurrency": , "browserConcurrency": }
```

`creditBalance` can be null before first billing. `concurrency` is the legacy alias for the fetch cap.

Prefer `GET /v1/status` in new integrations. It adds available/reserved credits, running and pending work by execution class, active batch IDs, enabled crons, and oldest pending age.

## Prices

 Section titled “Prices”

 Action Credits Prebuilt request 1 Parser fetch, default proxy 1 Parser browser, default proxy 5 Parser fetch, high-quality proxy 10 Parser browser, high-quality proxy 25 Database query 1 Database table dump 5 Parser/database/cron/workflow CRUD 0 Body-only parser dry-run 0

A URL-backed parser or workflow test bills the same fetch price as production.

## Reservations

 Section titled “Reservations”

Asynchronous jobs reserve their full expected cost at submission. Available credits are balance minus existing reservations. Each terminal job settles its reservation: attempted upstream work can be billed even when the job ultimately fails; work canceled before starting releases its reservation.

Use an `Idempotency-Key` (maximum 128 characters, 24-hour lifetime) on parser creation and batch submission so network retries do not duplicate resources or reservations.

## Fetch and browser concurrency

 Section titled “Fetch and browser concurrency”

Fetch and browser jobs use separate capacity pools and account caps. Using a fetch slot does not consume browser capacity. Sync scrape, URL-backed tests, batches, crons, and workflow stages share these counters.

A full pool returns 429. Poll `/v1/status` and retry with backoff. `pending.limit` is separate from running concurrency; an over-capacity batch is rejected as a whole.