# Karrio vs ShipStation API (slim)

> ShipStation API scores 59.3 (C) on agent readiness against Karrio's 48.7 (D), and leads in 4 of 7 scored categories. Karrio leads on reliability and security & auth. Both do shipping rates. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/karrio-vs-shipstation.md (~2,250 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/karrio-vs-shipstation.json · canonical https://www.anchorterminal.com/compare/karrio-vs-shipstation
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

ShipStation API scores 59.3 (C) on agent readiness against Karrio's 48.7 (D), and leads in 4 of 7 scored categories. Karrio leads on reliability and security & auth. Both do shipping rates.

- Karrio: D 48.7, rank #617 of 722 · https://www.anchorterminal.com/tools/karrio.min.md
- ShipStation API: C 59.3, rank #433 of 722 · https://www.anchorterminal.com/tools/shipstation.min.md
- Karrio, good for A team that wants to host its own multi-carrier API with its own carrier contracts and can maintain a Django and PostgreSQL stack. Ahead on Reliability, 76 against 64; Security & auth, 44 against 32. Also Open source.
- ShipStation API, good for An agent working inside a merchant's existing ShipStation account (orders, batches, inventory, labels), or a developer who wants a free sandbox through the ShipStation API plans. Ahead on Schema & documentation, 83 against 68; Agent ergonomics, 64 against 57; Maintenance & community, 73 against 29; Transparency & trust, 64 against 56. Also A hosted endpoint, with nothing to install; No incidents deducted, where Karrio loses 7 points for them.

| Category | Karrio | ShipStation API |
| --- | --- | --- |
| Reliability (16%) | 76 | 64 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 68 | 83 |
| Agent ergonomics (13%) | 57 | 64 |
| Security & auth (14%) | 44 | 32 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 29 | 73 |
| Transparency & trust (7%) | 56 | 64 |

| Fact (where they differ) | Karrio | ShipStation API |
| --- | --- | --- |
| Vendor | Karrio, Inc. | Auctane LLC d/b/a ShipStation |
| Hosted endpoint | no (local only) | `https://api.shipstation.com/v2` |
| Licence | LGPL-3.0 for the server, SDK and modules. Code under `ee/` is under the Karrio Enterprise licence and needs a subscription for production use. The MCP package in `packages/mcp` is Apache-2.0 | Proprietary service under ShipStation's terms of service. The v2 OpenAPI file is marked MIT and the SDKs on GitHub are Apache 2.0 |
| llms.txt | no | yes |
| Last release | 2026-06-23 | 2026-10-01 |
| Terms last updated | 2025-04-08 | no date given |
| Privacy policy last updated | 2025-04-08 | 2026-03-18 |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 799 stars, 338 PyPI/wk | 6.8k npm/wk |