# Particle Health vs ROOK

> ROOK scores 54.9 (C) to Particle Health's 48.6 (D) for fhir servers. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/particle-health-vs-rook
- Markdown: https://www.anchorterminal.com/compare/particle-health-vs-rook.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/particle-health-vs-rook.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/particle-health-vs-rook.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: 2026-10-14

ROOK scores 54.9 (C) on agent readiness against Particle Health's 48.6 (D), and leads in 5 of 7 scored categories. Particle Health leads on security & auth. Both do fhir servers.

- Particle Health: grade D, 48.6/100, rank #867 of 1076. Markdown https://www.anchorterminal.com/tools/particle-health.md · JSON https://www.anchorterminal.com/api/v1/tools/particle-health.json
- ROOK: grade C, 54.9/100, rank #718 of 1076. Markdown https://www.anchorterminal.com/tools/rook.md · JSON https://www.anchorterminal.com/api/v1/tools/rook.json
- Best health record and wellness data APIs for AI agents: https://www.anchorterminal.com/best/health-data/index.md
- All 63 health comparisons: https://www.anchorterminal.com/compare/health-data/index.md

## Which one, for what

### Particle Health (D)

Good for: US providers, payers and digital health companies that need a patient's network records as FHIR or flat data, and care-event alerts.

Ahead on:
- Security & auth, 57 against 32

Watch for: Credentials come from a Particle representative, and the 'play for free' sign-up domain did not resolve

### ROOK (C)

Good for: A wellness, insurance, corporate wellness or remote monitoring product that wants normalised wearable data pushed to its backend, with plan prices it can see up front.

Ahead on:
- Reliability, 75 against 58
- Schema & documentation, 74 against 69
- Payments & pricing, 25 against 5
- Maintenance & community, 73 against 27
- Transparency & trust, 55 against 48

Watch for: Credentials are one client UUID and secret per environment, sent by Basic auth, with no scopes or rotation documented


## Score by category

| Category | Weight | Particle Health | ROOK | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 58 | 75 | ROOK +17 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 69 | 74 | ROOK +5 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 49 | Particle Health +4 |
| Security & auth | 14% (17.5 this run) | 57 | 32 | Particle Health +25 |
| Payments & pricing | 10% (12.5 this run) | 5 | 25 | ROOK +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 27 | 73 | ROOK +46 |
| Transparency & trust | 7% (8.8 this run) | 48 | 55 | ROOK +7 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.6 · D** | **54.9 · C** | |

## Facts side by side

| Fact | Particle Health | ROOK |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Particle Health, Inc. | Rookeries Development Corp. |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | HTTP |
| Auth | OAuth | API key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under customer agreements. The public terms of use (effective 15 October 2020) cover the website only | Proprietary service under ROOK's Terms and Conditions for ROOK services |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | none | 2026-10-07 |
| Terms last updated | 2020-10-15 | 2026-08-01 |
| Privacy policy last updated | 2026-07-29 | 2026-05-28 |
| 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 | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | yes |

## Verdicts

**Particle Health.** Particle queries Carequality, CommonWell, eHealth Exchange and state HIEs for a patient and returns FHIR R4B, flat data or C-CDA, with project-scoped 60-minute tokens and OpenAPI fragments per endpoint. Credentials come through a representative, the free sign-up link was dead on 14 October 2026, and rate limits, SLA and changelog are unpublished.

**ROOK.** Graded on the REST API. A public OpenAPI file, a free Sandbox from the self-serve portal, published plan prices and a dated changelog. Credentials are one client UUID and secret per environment with no scopes, 429 handling isn't documented, the API is meant for occasional queries rather than bulk reads, and no SOC 2 report or security contact was found.

## Before you call either

### Particle Health

1. Pass `projects/<project_id>` as the scope when requesting a token, and request a new one every 60 minutes
2. Poll Get Query Status, or wait for the query-complete webhook, before reading FHIR or flat data
3. Back off on 429, since limits change with system load
4. Pass continuation tokens back verbatim when paging
5. Use the published synthetic patients in sandbox, and stay under 500 queries a day

### ROOK

1. Send HTTP Basic auth with client_uuid as the username and the secret key as the password, plus a User-Agent header, or the WAF returns 403
2. Use https://api.rook-connect.review for Sandbox and https://api.rook-connect.com for production. Each has its own credentials
3. Read health data from the data webhook. Use the API only for occasional queries, and stay under 60 requests a minute
4. Deduplicate summaries on document_version and datetime. ROOK resends a summary with a higher document_version when it changes
5. Call POST /api/v1/user_id/{user_id}/data_sources/revoke_auth to end a connection. Some providers take hours to stop sending data

## Questions

### Which is better for AI agents, Particle Health or ROOK?

ROOK scores 54.9 (C) on agent readiness against Particle Health's 48.6 (D), and leads in 5 of 7 scored categories. Particle Health leads on security & auth.

### Do Particle Health and ROOK need an API key?

Particle Health uses an OAuth sign-in. ROOK needs an API key.

### Can an agent call Particle Health and ROOK without installing anything?

No hosted endpoint is listed for Particle Health. No hosted endpoint is listed for ROOK.


## For agents

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

## Other comparisons with Particle Health or ROOK

- [1upHealth vs ROOK](https://www.anchorterminal.com/compare/1uphealth-vs-rook.md)
- [Aidbox vs Particle Health](https://www.anchorterminal.com/compare/aidbox-vs-particle-health.md)
- [Aidbox vs ROOK](https://www.anchorterminal.com/compare/aidbox-vs-rook.md)
- [Health Gorilla vs ROOK](https://www.anchorterminal.com/compare/health-gorilla-vs-rook.md)
- [Medplum vs Particle Health](https://www.anchorterminal.com/compare/medplum-vs-particle-health.md)
- [Medplum vs ROOK](https://www.anchorterminal.com/compare/medplum-vs-rook.md)
- [Metriport Medical API vs ROOK](https://www.anchorterminal.com/compare/metriport-vs-rook.md)
- [Particle Health vs Terra API](https://www.anchorterminal.com/compare/particle-health-vs-terra.md)
- [Redox vs ROOK](https://www.anchorterminal.com/compare/redox-vs-rook.md)
- [1upHealth vs Particle Health](https://www.anchorterminal.com/compare/1uphealth-vs-particle-health.md)
- [Health Gorilla vs Particle Health](https://www.anchorterminal.com/compare/health-gorilla-vs-particle-health.md)
- [Medblocks vs Particle Health](https://www.anchorterminal.com/compare/medblocks-vs-particle-health.md)
- [Metriport Medical API vs Particle Health](https://www.anchorterminal.com/compare/metriport-vs-particle-health.md)
- [Particle Health vs Redox](https://www.anchorterminal.com/compare/particle-health-vs-redox.md)
- [Particle Health vs Zus Health](https://www.anchorterminal.com/compare/particle-health-vs-zus-health.md)
- [Medblocks vs ROOK](https://www.anchorterminal.com/compare/medblocks-vs-rook.md)
- [ROOK vs Zus Health](https://www.anchorterminal.com/compare/rook-vs-zus-health.md)
- [ROOK vs Terra API](https://www.anchorterminal.com/compare/rook-vs-terra.md)
- [ROOK vs Validic Inform](https://www.anchorterminal.com/compare/rook-vs-validic.md)