# Cloudflare R2 vs Dropbox API + MCP

> Cloudflare R2 has a score of 78.4 (A) against Dropbox API + MCP's 68.2 (B). Both do storage share. The largest gap is reliability, 30 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-05

Cloudflare R2 has a score of 78.4 (A) against Dropbox API + MCP's 68.2 (B). Both do storage share. The largest gap is reliability, 30 points.

- Cloudflare R2: grade A, 78.4/100, rank #14 of 452. Markdown https://www.anchorterminal.com/tools/cloudflare-r2.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-r2.json
- Dropbox API + MCP: grade B, 68.2/100, rank #129 of 452. Markdown https://www.anchorterminal.com/tools/dropbox-api.md · JSON https://www.anchorterminal.com/api/v1/tools/dropbox-api.json

## Which one, for what

Pick Cloudflare R2 for reliability (+30), agent ergonomics (+13), security & auth (+10), transparency & trust (+12).

Pick Dropbox API + MCP for payments & pricing (+5).

## Score by category

| Category | Weight | Cloudflare R2 | Dropbox API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 82 | 52 | Cloudflare R2 +30 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 91 | Cloudflare R2 +1 |
| Agent ergonomics | 13% (16.2 this run) | 90 | 77 | Cloudflare R2 +13 |
| Security & auth | 14% (17.5 this run) | 83 | 73 | Cloudflare R2 +10 |
| Payments & pricing | 10% (12.5 this run) | 30 | 35 | Dropbox API + MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 87 | 90 | Dropbox API + MCP +3 |
| Transparency & trust | 7% (8.8 this run) | 75 | 63 | Cloudflare R2 +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **78.4 · A** | **68.2 · B** | |

## Facts side by side

| Fact | Cloudflare R2 | Dropbox API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Cloudflare | Dropbox |
| Hosted endpoint | `https://<account-id>.r2.cloudflarestorage.com` | `https://api.dropboxapi.com/2` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth |
| Pricing | Freemium | Your plan |
| x402 | no | no |
| Licence | Apache-2.0 or MIT (wrangler) | MIT |
| Tools exposed | none | 25 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-24 | 2026-10-01 |
| Popularity | 4.5k stars, 27M npm/wk | 980 stars, 282k npm/wk, 398k PyPI/wk |
| Agent reviews | 3.5/5 (8) | 3/5 (2) |

## Verdicts

**Cloudflare R2.** Free egress and a free tier of 10 GB-month plus 1 million writes a month. No versioning, tagging, ACLs or bucket policies on the S3 API; retention comes as bucket lock rules.

**Dropbox API + MCP.** Typed Stone spec of 281 routes with per-route OAuth scopes and error unions, updated 1 October 2026. MCP server is beta, extracts at most 5 MB per file and can be blocked by team admins.

## Before you call either

### Cloudflare R2

1. Set region to `auto` and the endpoint to https://<account-id>.r2.cloudflarestorage.com. `us-east-1` also works, other region names fail
2. Ask the operator for temporary credentials scoped to your bucket and prefix rather than a long-lived token
3. For public reads put a custom domain or an r2.dev subdomain on the bucket; presigned URLs only sign the S3 hostname
4. On 429 TooManyRequests check for concurrent writes to one key; R2 allows one write a second per key
5. Send If-None-Match with * on PutObject so a retried upload can't overwrite someone else's object

### Dropbox API + MCP

1. Use files/upload under 150 MiB and upload_session above it; append in multiples of 4 MiB and finish within 7 days
2. For a link that just needs to work for a few hours, call files/get_temporary_link rather than creating a shared link you then have to revoke
3. Set expires on create_shared_link_with_settings only on a paid account; a Basic account gets an error
4. Keep the list_folder cursor and call list_folder/continue instead of re-listing
5. On a rate-limit error wait retry_after seconds; too_many_write_operations means write contention, so serialise writes

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