Head to head · Kyc identity · October 2026 research run
Persona vs Sumsub
Persona scores 69.5 (B) on agent readiness against Sumsub's 68.5 (B), and leads in 4 of 7 scored categories. Sumsub leads on reliability, security & auth and transparency & trust. Both do kyc identity.
Which one, for what
Persona B
Good for A company that already runs Persona and wants an agent to create inquiries from templates, read verification and report results, screen against watchlists and work review cases with a permission-limited key.
Ahead on
- Schema & documentation, 85 against 78
- Agent ergonomics, 74 against 60
- Payments & pricing, 35 against 25
Watch for
Production access needs Persona's approval and a 12-month plan from $250 a month, and API-only integration is limited to Enterprise plans
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
- Reliability, 80 against 70
- Security & auth, 80 against 73
- Transparency & trust, 74 against 68
Watch for
No idempotency keys and no Retry-After or backoff guidance found in the reviewed documentation
Score by category
| Category | Weight this run | Persona | Sumsub | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 70 | 80 | Sumsub +10 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 85 | 78 | Persona +7 |
| Agent ergonomics | 13%16.2 | 74 | 60 | Persona +14 |
| Security & auth | 14%17.5 | 73 | 80 | Sumsub +7 |
| Payments & pricing | 10%12.5 | 35 | 25 | Persona +10 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 75 | 74 | Persona +1 |
| Transparency & trust | 7%8.8 | 68 | 74 | Sumsub +6 |
| Negative events | ≤15 | 0 | 0 | |
| Total | 69.5 · B | 68.5 · B |
Facts side by side
| Fact | Persona | Sumsub |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | Persona Identities, Inc. | Sum and Substance Ltd |
| Hosted endpoint | https://mcp.withpersona.com | https://api.sumsub.com |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | Proprietary service under Persona's terms of service. The persona JavaScript client on npm is MIT | Proprietary service under Sumsub's terms and conditions. The agent skills repository and the @sumsub/websdk npm package are MIT |
| Tools exposed | 190 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-29 | 2026-10-03 |
| Terms last updated | couldn't be read | 2026-05-21 |
| Privacy policy last updated | couldn't be read | 2026-03-19 |
| Customer content may train models | couldn't be read | yes |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | not found in the text |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | 570k npm/wk | 172k npm/wk |
Verdicts
Persona
The REST API has a public OpenAPI 3.1 file, llms.txt, API keys with per-resource permissions, idempotency keys on every POST and a 60-day sandbox trial with no card. Production needs a business review and a 12-month plan from $250 a month. The status page lists 11 incidents since 10 July 2026, including 70 minutes of timeouts across all products.
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
Persona
- Ask for a dedicated key limited to the permissions the task needs. A new key has every standard permission until it's limited
- Send
Persona-Versionon every call and anIdempotency-Keyon every POST. A replayed key returns the first result, including a 500 - Treat redact calls as irreversible. They permanently delete personal data and cascade to downstream objects
- Stay under 300 requests a minute in production, read
RateLimit-RemainingandQuota-Remaining, and back off on 429 because rejected requests still count - Use
fieldsandincludeto cut response size. Through MCP these parameters aren't exposed, and only 14 tools takefilter
Sumsub
- 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
- Use a sandbox token (prefix sbx) for agent work. Sandbox and production tokens are separate, and Sumsub's own skills refuse any other prefix
- Stay under 300 GET and 50 POST requests per 5 seconds, and under 500 new applicants per 24 hours in Sandbox
- Token permissions can't be edited after creation. Generate a new token with the narrower set and delete the old one
- 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, Persona or Sumsub?
Persona scores 69.5 (B) on agent readiness against Sumsub's 68.5 (B), and leads in 4 of 7 scored categories. Sumsub leads on reliability, security & auth and transparency & trust.
Do Persona and Sumsub need an API key?
Persona needs an API key. Sumsub takes an API key or an OAuth sign-in.
Can an agent call Persona and Sumsub without installing anything?
Yes. Persona has a hosted endpoint at https://mcp.withpersona.com and Sumsub at https://api.sumsub.com.
Other comparisons with Persona or Sumsub
Machine-readable
- This page as Markdown
/compare/persona-vs-sumsub.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/persona.json·/api/v1/tools/sumsub.json - From a terminal
anchor compare persona sumsub(the CLI) - Over MCP
compare_tools {"a": "persona", "b": "sumsub"}at/mcp, no key