# Bullhorn vs Greenhouse

> Greenhouse scores 64.8 (B) on agent readiness against Bullhorn's 46.7 (D), and leads in 5 of 7 scored categories. Bullhorn leads on payments & pricing. Both do recruiting candidates. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bullhorn-vs-greenhouse
- Markdown: https://www.anchorterminal.com/compare/bullhorn-vs-greenhouse.md (~2,300 tokens)
- Slim: https://www.anchorterminal.com/compare/bullhorn-vs-greenhouse.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bullhorn-vs-greenhouse.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

Greenhouse scores 64.8 (B) on agent readiness against Bullhorn's 46.7 (D), and leads in 5 of 7 scored categories. Bullhorn leads on payments & pricing. Both do recruiting candidates.

- Bullhorn: grade D, 46.7/100, rank #644 of 722. Markdown https://www.anchorterminal.com/tools/bullhorn.md · JSON https://www.anchorterminal.com/api/v1/tools/bullhorn.json
- Greenhouse: grade B, 64.8/100, rank #271 of 722. Markdown https://www.anchorterminal.com/tools/greenhouse.md · JSON https://www.anchorterminal.com/api/v1/tools/greenhouse.json

## Which one, for what

### Bullhorn (D)

Good for: An integration built for a staffing agency that already runs on Bullhorn, with Bullhorn's permission for AI use in writing, and needs candidates, job orders, submissions and placements.

Ahead on:
- Payments & pricing, 5 against 0

Watch for: The API Fair Use Policy of 17 December 2025 bars connecting third-party AI or LLM tools, or MCP, without Bullhorn's explicit written permission

### Greenhouse (B)

Good for: An agent working inside a company that already runs hiring on Greenhouse and needs to read pipelines, move applications, schedule interviews or draft offer records under scoped OAuth.

Ahead on:
- Reliability, 71 against 53
- Schema & documentation, 79 against 55
- Security & auth, 85 against 31
- Maintenance & community, 65 against 56
- Transparency & trust, 79 against 67

Watch for: No public price, free tier or trial. Pricing is customised through sales, and the sandbox is a Pro-tier feature


## Score by category

| Category | Weight | Bullhorn | Greenhouse | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 53 | 71 | Greenhouse +18 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 55 | 79 | Greenhouse +24 |
| Agent ergonomics | 13% (16.2 this run) | 64 | 63 | Bullhorn +1 |
| Security & auth | 14% (17.5 this run) | 31 | 85 | Greenhouse +54 |
| Payments & pricing | 10% (12.5 this run) | 5 | 0 | Bullhorn +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 56 | 65 | Greenhouse +9 |
| Transparency & trust | 7% (8.8 this run) | 67 | 79 | Greenhouse +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **46.7 · D** | **64.8 · B** | |

## Facts side by side

| Fact | Bullhorn | Greenhouse |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Bullhorn, Inc. | Greenhouse Software, Inc. |
| Hosted endpoint | `https://rest.bullhornstaffing.com/rest-services` | `https://harvest.greenhouse.io/v3` |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under a Bullhorn customer or partner agreement that is not published, with a public API Fair Use Policy. The `sdk-rest` Java library and the `@bullhorn/taurus` and `@bullhorn/bullhorn-types` packages are MIT per npm and the repositories | Proprietary service under Greenhouse's Master Subscription Agreement. The docs repository for the older APIs on GitHub is Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-09-29 | 2026-10-07 |
| Terms last updated | no date given | 2026-02-01 |
| Privacy policy last updated | 2026-05-20 | 2026-05-28 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 13 stars, 1.7k npm/wk | none |

## Verdicts

**Bullhorn.** The REST API covers 91 documented entities with required field selection, Lucene and JPQL queries and an event queue. Access is by support ticket or a paid partner contract, and the API Fair Use Policy bars connecting third-party AI or LLM tools or MCP without Bullhorn's written permission. No OpenAPI file or numeric rate limit was found.

**Greenhouse.** Harvest v3 pairs per-endpoint OAuth scopes with Markdown docs that embed an OpenAPI 3.1 definition for each call, and the beta MCP server blocks every DELETE. Access needs a paying customer account, with no public price, trial or self-serve sandbox, and no numeric rate limit or idempotency key was found in the reviewed documentation.

## Before you call either

### Bullhorn

1. Confirm the customer holds Bullhorn's written permission for AI or LLM access before any call. The API Fair Use Policy forbids it otherwise
2. Call `/rest-services/loginInfo?username=` first to learn the data centre, then use the returned OAuth and REST URLs and follow any 307 redirect
3. Log in once and reuse `BhRestToken` until a call returns 401, then use the refresh token. Bullhorn limits login rates and may block frequent logins
4. Send `BhRestToken` as a header, never in the URL, and always pass `fields`. `fields=*` is blocked outside `/meta`
5. On 429 wait one second and retry. Writes have no idempotency key, so read the record back before repeating a PUT

### Greenhouse

1. Request a token from https://auth.greenhouse.io/token with client credentials, then send it as a Bearer token to https://harvest.greenhouse.io/v3. Tokens expire, so repeat on 401
2. Put filters and `per_page` on the first list request only. A `cursor` must be the only query parameter, or the call returns 422
3. Send the current stage as `from_stage_id` when moving an application. It guards against stale moves. Other writes have no idempotency key, so check before retrying
4. Read `X-RateLimit-Remaining` on every response and wait for `Retry-After` on 429. The window is 30 seconds
5. Expect empty list results or 403 unless the token's user is a Site Admin with the needed permissions

## Questions

### Which is better for AI agents, Bullhorn or Greenhouse?

Greenhouse scores 64.8 (B) on agent readiness against Bullhorn's 46.7 (D), and leads in 5 of 7 scored categories. Bullhorn leads on payments & pricing.

### Do Bullhorn and Greenhouse need an API key?

Both use an OAuth sign-in.

### Can an agent call Bullhorn and Greenhouse without installing anything?

Yes. Bullhorn has a hosted endpoint at https://rest.bullhornstaffing.com/rest-services and Greenhouse at https://harvest.greenhouse.io/v3.


## For agents

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

## Other comparisons with Bullhorn or Greenhouse

- [Ashby vs Bullhorn](https://www.anchorterminal.com/compare/ashby-vs-bullhorn.md)
- [Ashby vs Greenhouse](https://www.anchorterminal.com/compare/ashby-vs-greenhouse.md)
- [Bullhorn vs Gem](https://www.anchorterminal.com/compare/bullhorn-vs-gem.md)
- [Bullhorn vs Lever](https://www.anchorterminal.com/compare/bullhorn-vs-lever.md)
- [Bullhorn vs Pinpoint](https://www.anchorterminal.com/compare/bullhorn-vs-pinpoint.md)
- [Bullhorn vs Recruitee](https://www.anchorterminal.com/compare/bullhorn-vs-recruitee.md)
- [Bullhorn vs SmartRecruiters](https://www.anchorterminal.com/compare/bullhorn-vs-smartrecruiters.md)
- [Bullhorn vs Workable](https://www.anchorterminal.com/compare/bullhorn-vs-workable.md)
- [Bullhorn vs Zoho Recruit](https://www.anchorterminal.com/compare/bullhorn-vs-zoho-recruit.md)
- [Gem vs Greenhouse](https://www.anchorterminal.com/compare/gem-vs-greenhouse.md)
- [Greenhouse vs Lever](https://www.anchorterminal.com/compare/greenhouse-vs-lever.md)
- [Greenhouse vs Pinpoint](https://www.anchorterminal.com/compare/greenhouse-vs-pinpoint.md)
- [Greenhouse vs Recruitee](https://www.anchorterminal.com/compare/greenhouse-vs-recruitee.md)
- [Greenhouse vs SmartRecruiters](https://www.anchorterminal.com/compare/greenhouse-vs-smartrecruiters.md)
- [Greenhouse vs Workable](https://www.anchorterminal.com/compare/greenhouse-vs-workable.md)
- [Greenhouse vs Zoho Recruit](https://www.anchorterminal.com/compare/greenhouse-vs-zoho-recruit.md)