# ComplyCube vs Sumsub

> Sumsub scores 68.5 (B) on agent readiness against ComplyCube's 63.7 (B), and leads in 2 of 7 scored categories. Both do kyc identity. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/complycube-vs-sumsub
- Markdown: https://www.anchorterminal.com/compare/complycube-vs-sumsub.md (~2,100 tokens)
- Slim: https://www.anchorterminal.com/compare/complycube-vs-sumsub.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/complycube-vs-sumsub.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Sumsub scores 68.5 (B) on agent readiness against ComplyCube's 63.7 (B), and leads in 2 of 7 scored categories. Both do kyc identity.

- ComplyCube: grade B, 63.7/100, rank #299 of 722. Markdown https://www.anchorterminal.com/tools/complycube.md · JSON https://www.anchorterminal.com/api/v1/tools/complycube.json
- Sumsub: grade B, 68.5/100, rank #177 of 722. Markdown https://www.anchorterminal.com/tools/sumsub.md · JSON https://www.anchorterminal.com/api/v1/tools/sumsub.json

## Which one, for what

### ComplyCube (B)

Good for: An agent that creates clients, uploads documents, starts document, identity and AML screening checks and reads results for a regulated business, with low entry cost ($99 a month) and a scripted sandbox.

Watch for: One API key per environment with no scopes. The docs say keys carry many privileges

### Sumsub (B)

Good for: An agent that starts verifications, sends links, reads results and AML cases, and works case queues for a regulated business, with one token limited to those permissions.

Ahead on:
- Security & auth, 80 against 52
- Transparency & trust, 74 against 63

Watch for: No idempotency keys and no Retry-After or backoff guidance found in the reviewed documentation


## Score by category

| Category | Weight | ComplyCube | Sumsub | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 84 | 80 | ComplyCube +4 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 78 | 78 | even |
| Agent ergonomics | 13% (16.2 this run) | 60 | 60 | even |
| Security & auth | 14% (17.5 this run) | 52 | 80 | Sumsub +28 |
| Payments & pricing | 10% (12.5 this run) | 27 | 25 | ComplyCube +2 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 74 | 74 | even |
| Transparency & trust | 7% (8.8 this run) | 63 | 74 | Sumsub +11 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.7 · B** | **68.5 · B** | |

## Facts side by side

| Fact | ComplyCube | Sumsub |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | ComplyCube (Teemo Technology Ltd) | Sum and Substance Ltd |
| Hosted endpoint | `https://api.complycube.com` | `https://api.sumsub.com` |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Proprietary service under ComplyCube's terms of service. The PHP library and the web, iOS and Android SDK repositories are MIT, and `@complycube/api` on npm is MIT | Proprietary service under Sumsub's terms and conditions. The agent skills repository and the @sumsub/websdk npm package are MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-06 | 2026-10-03 |
| Terms last updated | no date given | 2026-05-21 |
| Privacy policy last updated | no date given | 2026-03-19 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | 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 | 6.2k npm/wk, 292 PyPI/wk | 172k npm/wk |

## Verdicts

**ComplyCube.** A sandbox with its own key and scripted outcomes, a public OpenAPI spec, Markdown docs and an audit log API suit an agent running verification checks. Each environment has one unscoped key, no idempotency keys were found, and the only published terms are undated and read as website terms.

**Sumsub.** Per-token permissions, an IP allowlist, HMAC-signed requests and a public OpenAPI spec with Markdown docs suit an agent working on verification cases. No idempotency keys or Retry-After guidance were found, there is no server SDK, and production access needs a browser signup, a bank card and Sumsub's review of the integration.

## Before you call either

### ComplyCube

1. Send the key bare in the `Authorization` header, with no Bearer prefix. Keys start `test_` or `live_`
2. Create a client first, then documents or live photos for it, then `POST /v1/checks` with the client and upload IDs
3. Stay under 10 requests a second live and 5 in the sandbox. On 429, back off exponentially with jitter, starting at 30 seconds
4. A badly formed filter returns 200 with no results, so check filter names before trusting an empty list
5. Checks are asynchronous. Subscribe to webhooks, verify the `ComplyCube-Signature` HMAC-SHA256 header, and expect duplicate and out-of-order events

### Sumsub

1. Sign every request. X-App-Access-Sig is the lowercase hex HMAC-SHA256 of timestamp, uppercase method, path with query and raw body, and the timestamp must be within one minute of server time
2. Use a sandbox token (prefix sbx) for agent work. Sandbox and production tokens are separate, and Sumsub's own skills refuse any other prefix
3. Stay under 300 GET and 50 POST requests per 5 seconds, and under 500 new applicants per 24 hours in Sandbox
4. Token permissions can't be edited after creation. Generate a new token with the narrower set and delete the old one
5. Subscribe to the applicantReviewed webhook for results and verify x-payload-digest against the raw body before trusting it

## Questions

### Which is better for AI agents, ComplyCube or Sumsub?

Sumsub scores 68.5 (B) on agent readiness against ComplyCube's 63.7 (B), and leads in 2 of 7 scored categories.

### Do ComplyCube and Sumsub need an API key?

ComplyCube needs an API key. Sumsub takes an API key or an OAuth sign-in.

### Can an agent call ComplyCube and Sumsub without installing anything?

Yes. ComplyCube has a hosted endpoint at https://api.complycube.com and Sumsub at https://api.sumsub.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/complycube-vs-sumsub.json, and with the fewest tokens: https://www.anchorterminal.com/compare/complycube-vs-sumsub.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "complycube", "b": "sumsub"}`. From a terminal: `anchor compare complycube sumsub`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/complycube.json and https://www.anchorterminal.com/api/v1/tools/sumsub.json

## Other comparisons with ComplyCube or Sumsub

- [ComplyCube vs Didit](https://www.anchorterminal.com/compare/complycube-vs-didit.md)
- [ComplyCube vs Jumio](https://www.anchorterminal.com/compare/complycube-vs-jumio.md)
- [ComplyCube vs Middesk](https://www.anchorterminal.com/compare/complycube-vs-middesk.md)
- [ComplyCube vs Persona](https://www.anchorterminal.com/compare/complycube-vs-persona.md)
- [ComplyCube vs Trulioo](https://www.anchorterminal.com/compare/complycube-vs-trulioo.md)
- [ComplyCube vs Veriff](https://www.anchorterminal.com/compare/complycube-vs-veriff.md)
- [Didit vs Sumsub](https://www.anchorterminal.com/compare/didit-vs-sumsub.md)
- [Jumio vs Sumsub](https://www.anchorterminal.com/compare/jumio-vs-sumsub.md)
- [Persona vs Sumsub](https://www.anchorterminal.com/compare/persona-vs-sumsub.md)
- [Sumsub vs Trulioo](https://www.anchorterminal.com/compare/sumsub-vs-trulioo.md)
- [Sumsub vs Veriff](https://www.anchorterminal.com/compare/sumsub-vs-veriff.md)
- [ComplyAdvantage vs ComplyCube](https://www.anchorterminal.com/compare/complyadvantage-vs-complycube.md)
- [ComplyAdvantage vs Sumsub](https://www.anchorterminal.com/compare/complyadvantage-vs-sumsub.md)
- [Middesk vs Sumsub](https://www.anchorterminal.com/compare/middesk-vs-sumsub.md)