> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# AbeBooks audit profile, Vortex IQ

> What the Vortex IQ AbeBooks health audit checks: AbeBooks: FTPS Feed Health, Listing Visibility & Cross-Channel ISBN Leak

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/abebooks) · [Audit Profile](/nerve-centre/kpi-cards/abebooks/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/abebooks/sentiment)**

AbeBooks is a used / rare-book reseller marketplace served entirely over FTPS (no real-time API). Audits cover FTPS connectivity + feed-cycle health, listing visibility (suspended, pending, stale, missing-ISBN), order fulfilment SLA (the seller-rating signal that drives AbeBooks account standing), pricing / margin watch on rare titles, and cross-channel ISBN comparisons against Alibris + Amazon book listings to surface drift, missing-on-AbeBooks ISBNs, and channel-mix imbalance for book-trade merchants.

## What this audit checks

### Authentication & connectivity

* FTPS login on ftp.abebooks.com:21 succeeds (220 -> AUTH TLS -> 230)
* Explicit AUTH TLS upgrade negotiated correctly (no plain-FTP fallback)
* TLS server certificate verifies (verify\_peer is on)
* Passive-mode data channel opens on the merchant's egress
* Drop folders /inbox + /outbox readable / writable for the merchant's username
* Time skew between merchant clock and AbeBooks server \<5 min (TLS sanity)

### Listing-feed health

* Last successful /outbox/listings upload \<48h (any older = feed blind)
* Failed batches in /inbox/acks (any > 0 = rows AbeBooks rejected)
* Top error patterns clustered from inbound ack files (drives 'fix once' bug list)
* ISBN coverage \<90% (untracked listings can't cross-reference Alibris / Amazon)
* Stale listings >180d no update >10% of catalogue
* Suspended / pending listings >0 (direct revenue blocker)

### Order-feed health

* Inbound /inbox/orders file lag >12h (probable upstream incident)
* Pending dispatch >2x 30D average (back-office backlog)
* Avg time to process >24h
* Late dispatches past dispatch\_due\_by >5% of 30D orders (account-standing risk)
* Cancellation rate >3%
* Return rate >5% (book-trade tolerates some, watch for grading drift on used stock)

### Cost & efficiency

* Commission paid % of revenue drift vs prior 90D
* Avg dispatch hours rising trend (fulfilment cost creep)
* Per-condition margin: like\_new / very\_good vs acceptable mix shift
* AOV drop with no volume drop (mix shift to lower-condition stock)

### Cross-channel: leak vs Alibris + Amazon (the killer area)

* ISBN drift - same ISBN, AbeBooks vs Alibris vs Amazon price delta >15%
* Top-50 Alibris / Amazon book-revenue ISBNs not listed on AbeBooks (cheapest revenue lift)
* AbeBooks price >15% below merchant's own DTC list on like\_new / very\_good first editions (margin erosion)
* Channel mix anomaly: AbeBooks share of book-trade revenue dropping >25% WoW vs sibling book marketplaces
* Outbound feed cycle desync: same SKU updated on Alibris but no AbeBooks /outbox/listings upload in 7d

## Severity thresholds

| Signal                               | Warn | Critical |
| ------------------------------------ | ---- | -------- |
| `hours_since_last_successful_upload` | 24   | 48       |
| `failed_batch_count_7d`              | 1    | 5        |
| `isbn_coverage_pct`                  | 90   | 80       |
| `suspended_listings_count`           | 1    | 5        |
| `stale_listings_pct`                 | 5    | 10       |
| `inbound_orders_file_lag_hours`      | 6    | 12       |
| `pending_dispatch_multiplier`        | 1.5  | 2        |
| `avg_time_to_process_hours`          | 18   | 24       |
| `late_dispatch_pct`                  | 3    | 5        |
| `cancellation_rate_pct`              | 2    | 3        |
| `return_rate_pct`                    | 4    | 5        |
| `isbn_drift_count`                   | 5    | 10       |
| `missing_on_abebooks_count`          | 3    | 5        |
| `rare_book_floor_violation_count`    | 1    | 5        |

## Data sources

* `GET ftps://ftp.abebooks.com:21/inbox/orders/` - Download daily order files for SLA + revenue audits.
* `GET ftps://ftp.abebooks.com:21/inbox/acks/` - Read upload acks + processed-with-errors reports for feed-health audit.
* `GET ftps://ftp.abebooks.com:21/inbox/returns/` - Return + refund notifications for return-rate audit.
* `PUT ftps://ftp.abebooks.com:21/outbox/listings/` - Upload-cycle telemetry source - confirmed-vs-rejected counts drive feed health.
* `PUT ftps://ftp.abebooks.com:21/outbox/price/` - Price delta uploads - per-batch ack timing.
* `PUT ftps://ftp.abebooks.com:21/outbox/quantity/` - Quantity-only uploads - fast availability updates.