# Salsa vs Zeal

> Salsa and Zeal score within a point of each other on agent readiness, 46.1 (D) and 45.4 (E). Zeal leads on reliability, agent ergonomics and maintenance & community. Both do payroll run. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/salsa-vs-zeal
- Markdown: https://www.anchorterminal.com/compare/salsa-vs-zeal.md (~2,150 tokens)
- Slim: https://www.anchorterminal.com/compare/salsa-vs-zeal.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/salsa-vs-zeal.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

Salsa and Zeal score within a point of each other on agent readiness, 46.1 (D) and 45.4 (E). Zeal leads on reliability, agent ergonomics and maintenance & community. Both do payroll run.

- Salsa: grade D, 46.1/100, rank #651 of 722. Markdown https://www.anchorterminal.com/tools/salsa.md · JSON https://www.anchorterminal.com/api/v1/tools/salsa.json
- Zeal: grade E, 45.4/100, rank #658 of 722. Markdown https://www.anchorterminal.com/tools/zeal.md · JSON https://www.anchorterminal.com/api/v1/tools/zeal.json

## Which one, for what

### Salsa (D)

Good for: A software platform that wants to sell payroll to its own business customers and can sign a partner agreement, with Salsa handling tax filing and money movement.

Ahead on:
- Schema & documentation, 73 against 68
- Security & auth, 56 against 34
- Payments & pricing, 5 against 0

Watch for: API tokens come from Salsa after a sales contact. No self-serve signup, public price, free tier or trial was found

### Zeal (E)

Good for: A US staffing platform, marketplace or workforce product that will sign a partnership and run payroll for many employers under its own brand, including daily and on-demand pay.

Ahead on:
- Reliability, 42 against 36
- Agent ergonomics, 63 against 48
- Maintenance & community, 61 against 50

Watch for: No self-serve signup. Zeal's team creates the partner account after a demo request, and no price is published


## Score by category

| Category | Weight | Salsa | Zeal | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 36 | 42 | Zeal +6 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 73 | 68 | Salsa +5 |
| Agent ergonomics | 13% (16.2 this run) | 48 | 63 | Zeal +15 |
| Security & auth | 14% (17.5 this run) | 56 | 34 | Salsa +22 |
| Payments & pricing | 10% (12.5 this run) | 5 | 0 | Salsa +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 50 | 61 | Zeal +11 |
| Transparency & trust | 7% (8.8 this run) | 51 | 51 | even |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **46.1 · D** | **45.4 · E** | |

## Facts side by side

| Fact | Salsa | Zeal |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Salsa Software Inc. | Puzzl Group Inc. |
| Hosted endpoint | `https://api.salsa.dev/api/rest/v1` | `https://api.zeal.com` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service. The website Terms of Use are public and the partner agreement isn't. The browser library @salsa-payroll/salsa-js on npm is MIT | Proprietary service. The npm SDK declares MIT. The SDK repositories on GitHub carry no licence file |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-07 | 2026-07-31 |
| Terms last updated | 2022-04-07 | 2026-01-16 |
| Privacy policy last updated | 2025-09-24 | 2026-01-16 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 435 npm/wk | 0 stars, 8 npm/wk |

## Verdicts

**Salsa.** Salsa is reached as an embedded-payroll partner, not through an employer's existing payroll account. The REST API has a public OpenAPI 3.1 spec with 123 operations, a payroll preview, a separate confirm step and short-lived user tokens limited by role. Access starts with a sales conversation, and no public price, self-serve sandbox, status page or API changelog was found.

**Zeal.** Graded on the partner REST API at api.zeal.com, which is the only access route. Three OpenAPI specs, llms.txt, a test environment that moves no money, a preview endpoint and a per-cheque approval flag are documented. Access starts with a demo request, prices are not published, each environment has one unscoped key, and no status page or working changelog was found.

## Before you call either

### Salsa

1. Use the sandbox token against https://api.sandbox.salsa.dev and the production token against https://api.salsa.dev. Each environment has its own token
2. Call POST /payroll-runs/preview before creating a run, then confirm the PENDING run in a separate call. Confirming starts the employer debit
3. Send your own externalId on every create. A repeat returns a uniqueness error, which is the only duplicate protection
4. Make sure externalId values are unique across all employers, since each entity type has one namespace
5. Mint a user token with the lowest role and the fewest employerIds the task needs, and keep the partner token on the server

### Zeal

1. Use the Test API key until a person has approved live payroll. Error code 0 (403) means the account has no production access
2. Send `companyID` on almost every call and `partnerID` on partner-level calls, in the body for POST and PATCH and the query for GET
3. Create cheques with `approval_required: true`, run POST /preview/checks, then PATCH /employeeCheck with `approved: true`. Without the flag Zeal processes pending cheques automatically
4. Send `x-idempotency-key` on every create so a retry within 24 hours doesn't pay twice
5. Previews and reports are jobs. Keep the `job_id` and poll GET /preview or GET /reports, or wait for the Job Queue webhook
6. Check dates must be bank days and submitted before 2 PM Pacific two bank days ahead, or the call fails with code 89

## Questions

### Which is better for AI agents, Salsa or Zeal?

Salsa and Zeal score within a point of each other on agent readiness, 46.1 (D) and 45.4 (E). Zeal leads on reliability, agent ergonomics and maintenance & community.

### Do Salsa and Zeal need an API key?

Both need an API key.

### Can an agent call Salsa and Zeal without installing anything?

Yes. Salsa has a hosted endpoint at https://api.salsa.dev/api/rest/v1 and Zeal at https://api.zeal.com.


## For agents

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

## Other comparisons with Salsa or Zeal

- [Argyle vs Salsa](https://www.anchorterminal.com/compare/argyle-vs-salsa.md)
- [Argyle vs Zeal](https://www.anchorterminal.com/compare/argyle-vs-zeal.md)
- [Finch vs Salsa](https://www.anchorterminal.com/compare/finch-vs-salsa.md)
- [Finch vs Zeal](https://www.anchorterminal.com/compare/finch-vs-zeal.md)
- [Paychex vs Salsa](https://www.anchorterminal.com/compare/paychex-vs-salsa.md)
- [Paychex vs Zeal](https://www.anchorterminal.com/compare/paychex-vs-zeal.md)
- [Check vs Salsa](https://www.anchorterminal.com/compare/check-payroll-vs-salsa.md)
- [Check vs Zeal](https://www.anchorterminal.com/compare/check-payroll-vs-zeal.md)
- [Employment Hero Payroll vs Salsa](https://www.anchorterminal.com/compare/employment-hero-vs-salsa.md)
- [Employment Hero Payroll vs Zeal](https://www.anchorterminal.com/compare/employment-hero-vs-zeal.md)
- [Everee vs Salsa](https://www.anchorterminal.com/compare/everee-vs-salsa.md)
- [Everee vs Zeal](https://www.anchorterminal.com/compare/everee-vs-zeal.md)
- [Gusto vs Salsa](https://www.anchorterminal.com/compare/gusto-vs-salsa.md)
- [Gusto vs Zeal](https://www.anchorterminal.com/compare/gusto-vs-zeal.md)