# BambooHR vs Factorial

> Factorial scores 66.3 (B) on agent readiness against BambooHR's 61.7 (C), and leads in 4 of 7 scored categories. BambooHR leads on schema & documentation and payments & pricing. Both do hr employees. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bamboohr-vs-factorial
- Markdown: https://www.anchorterminal.com/compare/bamboohr-vs-factorial.md (~2,000 tokens)
- Slim: https://www.anchorterminal.com/compare/bamboohr-vs-factorial.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bamboohr-vs-factorial.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

Factorial scores 66.3 (B) on agent readiness against BambooHR's 61.7 (C), and leads in 4 of 7 scored categories. BambooHR leads on schema & documentation and payments & pricing. Both do hr employees.

- BambooHR: grade C, 61.7/100, rank #357 of 722. Markdown https://www.anchorterminal.com/tools/bamboohr.md · JSON https://www.anchorterminal.com/api/v1/tools/bamboohr.json
- Factorial: grade B, 66.3/100, rank #239 of 722. Markdown https://www.anchorterminal.com/tools/factorial.md · JSON https://www.anchorterminal.com/api/v1/tools/factorial.json

## Which one, for what

### BambooHR (C)

Good for: An agent working inside one company's BambooHR account on directory lookups, time off, reports and goals, with the user's own permissions as the limit.

Ahead on:
- Schema & documentation, 88 against 77
- Payments & pricing, 35 against 10

Watch for: No rate limit numbers in the reviewed documentation. The terms reserve the right to throttle

### Factorial (B)

Good for: An agent working for a company that already runs Factorial and needs employee records, leave requests with approval, attendance clock-ins, recruiting or expenses through one API.

Ahead on:
- Reliability, 88 against 50
- Maintenance & community, 84 against 62

Watch for: An API key grants every scope, cannot be narrowed and does not expire


## Score by category

| Category | Weight | BambooHR | Factorial | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 50 | 88 | Factorial +38 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 88 | 77 | BambooHR +11 |
| Agent ergonomics | 13% (16.2 this run) | 61 | 58 | BambooHR +3 |
| Security & auth | 14% (17.5 this run) | 64 | 65 | Factorial +1 |
| Payments & pricing | 10% (12.5 this run) | 35 | 10 | BambooHR +25 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 62 | 84 | Factorial +22 |
| Transparency & trust | 7% (8.8 this run) | 74 | 78 | Factorial +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **61.7 · C** | **66.3 · B** | |

## Facts side by side

| Fact | BambooHR | Factorial |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Bamboo HR LLC | Everyday Software, S.L. |
| Hosted endpoint | `https://{companyDomain}.bamboohr.com/api/v1` | `https://api.factorialhr.com` |
| Transports | HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under BambooHR's terms of service and developer terms. The official PHP SDK on GitHub is MIT | Proprietary service under Factorial's terms and conditions. The TypeScript and Python SDKs are MIT |
| Tools exposed | 56 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-08-26 | 2026-10-05 |
| Terms last updated | 2026-02-01 | no date given |
| Privacy policy last updated | 2025-09-01 | 2026-01-01 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 34 stars | 7 stars, 1.4k npm/wk, 1.1k PyPI/wk |

## Verdicts

**BambooHR.** The REST API publishes an OpenAPI 3.1 spec with 389 operations, llms.txt and OAuth scopes with separate write variants, and every call runs with the authorising user's permissions. No rate limit numbers are published, the MCP server is in beta, and its results can omit records without saying so.

**Factorial.** A public OpenAPI 3.1 definition covers 615 operations, including leave approval and employee termination, and OAuth apps can be limited to 33 scopes. API keys always grant every scope and never expire. No idempotency keys exist, and a request to an expired API version is answered in an older schema with no error.

## Before you call either

### BambooHR

1. Treat a short or empty result as what this caller may see. `list_employees` drops employees when a filter or sort field is restricted
2. Honour `Retry-After` on 429. Rate-limited calls returned 503 before 16 September 2026, so handle both
3. Ask for read scopes only unless the task writes. Write access needs the matching `.write` scope
4. Request `offline_access` to receive a refresh token. Access tokens last one hour
5. Use `list-employees` with `fields`, `filter` and cursor paging in place of the unpaginated directory endpoint

### Factorial

1. Send an API key in `x-api-key` and an OAuth token in `Authorization: Bearer`. The key is JWT-formatted but is rejected as a bearer token
2. Pin the version in the path, such as `/api/2026-10-01/resources/...`, and migrate within a year. Expired versions answer in an older schema without an error
3. Treat a 200 with an empty body as a credential from the other environment. Production is `api.factorialhr.com` and demo is `api.eu2.demo.factorial.dev`
4. Page with `limit=100` and pass `meta.end_cursor` as `after_id`. A larger limit is capped at 100
5. Check whether a record exists before retrying a create. Retry only 429 and 5xx with backoff, and branch on `code` for 422 because messages are localised

## Questions

### Which is better for AI agents, BambooHR or Factorial?

Factorial scores 66.3 (B) on agent readiness against BambooHR's 61.7 (C), and leads in 4 of 7 scored categories. BambooHR leads on schema & documentation and payments & pricing.

### Do BambooHR and Factorial need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call BambooHR and Factorial without installing anything?

Yes. BambooHR has a hosted endpoint at https://{companyDomain}.bamboohr.com/api/v1 and Factorial at https://api.factorialhr.com.


## For agents

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

## Other comparisons with BambooHR or Factorial

- [BambooHR vs Deel](https://www.anchorterminal.com/compare/bamboohr-vs-deel.md)
- [BambooHR vs HiBob](https://www.anchorterminal.com/compare/bamboohr-vs-hibob.md)
- [BambooHR vs Humaans](https://www.anchorterminal.com/compare/bamboohr-vs-humaans.md)
- [BambooHR vs Rippling](https://www.anchorterminal.com/compare/bamboohr-vs-rippling.md)
- [BambooHR vs Zoho People](https://www.anchorterminal.com/compare/bamboohr-vs-zoho-people.md)
- [Deel vs Factorial](https://www.anchorterminal.com/compare/deel-vs-factorial.md)
- [Factorial vs HiBob](https://www.anchorterminal.com/compare/factorial-vs-hibob.md)
- [Factorial vs Humaans](https://www.anchorterminal.com/compare/factorial-vs-humaans.md)
- [Factorial vs Rippling](https://www.anchorterminal.com/compare/factorial-vs-rippling.md)
- [Factorial vs Zoho People](https://www.anchorterminal.com/compare/factorial-vs-zoho-people.md)