Head to head · Payroll run · October 2026 research run
Gusto vs Worklio
Gusto scores 63.3 (B) on agent readiness against Worklio's 38.6 (E), and leads in 6 of 7 scored categories. Worklio leads on payments & pricing. Both do payroll run.
Which one, for what
Gusto B
Good for A software platform that wants to run US payroll for its own customers and can pass Gusto's partner reviews.
Ahead on
- Reliability, 58 against 25
- Schema & documentation, 86 against 71
- Agent ergonomics, 82 against 44
- Security & auth, 60 against 48
- Maintenance & community, 76 against 25
- Transparency & trust, 61 against 48
Also in its favour
- No incidents deducted, where Worklio loses 3 points for them
Watch for
Production keys need commercial, security and implementation reviews with Gusto's partnerships team, and the docs say not all use cases are supported
Worklio E
Good for A software platform, PEO or payroll bureau that wants to sell US payroll under its own brand and can sign a partner agreement, with Worklio handling tax filing and money movement.
Ahead on
- Payments & pricing, 25 against 15
Also in its favour
- A hosted endpoint, with nothing to install
Watch for
No rate limits, 429 handling or idempotency keys were found in the reviewed documentation
Score by category
| Category | Weight this run | Gusto | Worklio | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 58 | 25 | Gusto +33 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 86 | 71 | Gusto +15 |
| Agent ergonomics | 13%16.2 | 82 | 44 | Gusto +38 |
| Security & auth | 14%17.5 | 60 | 48 | Gusto +12 |
| Payments & pricing | 10%12.5 | 15 | 25 | Worklio +10 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 76 | 25 | Gusto +51 |
| Transparency & trust | 7%8.8 | 61 | 48 | Gusto +13 |
| Negative events | ≤15 | 0 | -3 | |
| Total | 63.3 · B | 38.6 · E |
Facts side by side
| Fact | Gusto | Worklio |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | Gusto, Inc. | Worklio, Inc. |
| Hosted endpoint | no (local only) | https://api.worklio.com |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Gusto's API Policy and Developer Terms of Service. The API clients on GitHub are MIT, and the React SDK and the Gusto CLI are Apache-2.0 | Proprietary service. The public Terms of Use date from 2014 and the partner agreement isn't public. The front-end library sits in a private repository |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-01 | 2026-06-30 |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models | couldn't be read | |
| Terms restrict automated access | couldn't be read | |
| Terms restrict benchmarking | couldn't be read | |
| Terms or service can change without notice | couldn't be read | |
| Arbitration or class-action waiver | couldn't be read | |
| Popularity | 2 stars, 25k npm/wk | none |
Verdicts
Gusto
This listing covers the Embedded Payroll API. Every reference page carries an OpenAPI 3.1 definition, payroll is calculated as a preview before submission, and each API version gets 12 months of deprecation support. Production needs commercial and security approval, no price was readable, and the status page lists 11 incidents between 14 July and 5 October 2026, five marked major.
Worklio
Worklio documents 853 REST operations with an OpenAPI fragment on every reference page, and a developer can register for the sandbox without a sales call. No rate limits or public SDK were found, the status page is password protected, and the payroll guide tells callers to treat an HTTP 500 as the signal to finalise.
Before you call either
Gusto
- Develop against https://api.gusto-demo.com. Production at https://api.gusto.com needs keys Gusto issues after its reviews
- Send
X-Gusto-API-Version: 2026-06-15on every call. Without it the application's minimum version applies - Send the resource's current
versionwith every PUT, and only the fields to change. A stale version returns 409 - Calculate and submit return 202. Poll GET on the payroll until
calculated_atis set or the status is processed, and readsubmission_blockersfirst - For a company already on Gusto, the Embedded API is the wrong route. Use the Gusto CLI or the MCP server at https://mcp.api.gusto.com, which draft payroll but can't submit it
Worklio
- Send
api-version: 2.0on/wepcalls. The reference marks the header as required - Get a token from
POST https://api.worklio.com/connect/tokenwith the password grant and scopeapi. It lasts 24 hours, so fetch a new one daily - Run payroll as start,
nextuntil it answers 500 with "Next step operation is not allowed", thenfinalize. Don't treat that 500 as a failure - Don't retry bonus, off-cycle, void or termination payroll starts blindly. The reference says those calls are not idempotent
- Most
/weplist endpoints return the whole result set. Paging,filterandsortwork only under/api/public, and aDataTokenexpires after 60 seconds
Questions
Which is better for AI agents, Gusto or Worklio?
Gusto scores 63.3 (B) on agent readiness against Worklio's 38.6 (E), and leads in 6 of 7 scored categories. Worklio leads on payments & pricing.
Do Gusto and Worklio need an API key?
Both use an OAuth sign-in.
Can an agent call Gusto and Worklio without installing anything?
No hosted endpoint is listed for Gusto. Worklio has a hosted endpoint at https://api.worklio.com.
Other comparisons with Gusto or Worklio
Machine-readable
- This page as Markdown
/compare/gusto-vs-worklio.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/gusto.json·/api/v1/tools/worklio.json - From a terminal
anchor compare gusto worklio(the CLI) - Over MCP
compare_tools {"a": "gusto", "b": "worklio"}at/mcp, no key