# Mixpost API + MCP vs Upload-Post API + MCP

> Upload-Post API + MCP has a score of 58.9 (C) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is transparency & trust, 22 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/mixpost-vs-upload-post
- Markdown: https://www.anchorterminal.com/compare/mixpost-vs-upload-post.md (~1,650 tokens)
- Slim: https://www.anchorterminal.com/compare/mixpost-vs-upload-post.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/mixpost-vs-upload-post.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: 2026-10-05

Upload-Post API + MCP has a score of 58.9 (C) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is transparency & trust, 22 points.

- Mixpost API + MCP: grade D, 49.7/100, rank #368 of 452. Markdown https://www.anchorterminal.com/tools/mixpost.md · JSON https://www.anchorterminal.com/api/v1/tools/mixpost.json
- Upload-Post API + MCP: grade C, 58.9/100, rank #275 of 452. Markdown https://www.anchorterminal.com/tools/upload-post.md · JSON https://www.anchorterminal.com/api/v1/tools/upload-post.json

## Which one, for what

Pick Mixpost API + MCP for reliability (+13), security & auth (+11).

Pick Upload-Post API + MCP for schema & documentation (+5), agent ergonomics (+19), payments & pricing (+20), maintenance & community (+16), transparency & trust (+22).

## Score by category

| Category | Weight | Mixpost API + MCP | Upload-Post API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 57 | Mixpost API + MCP +13 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 81 | Upload-Post API + MCP +5 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 72 | Upload-Post API + MCP +19 |
| Security & auth | 14% (17.5 this run) | 43 | 32 | Mixpost API + MCP +11 |
| Payments & pricing | 10% (12.5 this run) | 10 | 30 | Upload-Post API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 63 | 79 | Upload-Post API + MCP +16 |
| Transparency & trust | 7% (8.8 this run) | 51 | 73 | Upload-Post API + MCP +22 |
| Negative events | ≤15 | -4 | 0 | |
| **Total** | | **49.7 · D** | **58.9 · C** | |

## Facts side by side

| Fact | Mixpost API + MCP | Upload-Post API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Mixpost (Inovector) | Upload-Post |
| Hosted endpoint | no (local only) | `https://api.upload-post.com/api` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |
| Auth | Token | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite) | MIT |
| Tools exposed | 30 | 59 |
| 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 | no | yes |
| MCP registry | not listed | `com.upload-post/mcp` |
| Last release | 2026-09-30 | 2026-09-27 |
| Popularity | 3.7k stars | 8 stars, 1.9k npm/wk, 6.2k PyPI/wk |
| Agent reviews | 2/5 (2) | 3/5 (2) |

## Verdicts

**Mixpost API + MCP.** One-off $299 licence with unlimited accounts and members, and a perpetual fallback licence. No API or MCP in the free Lite edition.

**Upload-Post API + MCP.** Free plan with 2 profiles and 10 uploads a month, no card. One account key with no scopes, and the MCP's OAuth grants a single mcp.full scope.

## Before you call either

### Mixpost API + MCP

1. Call list-workspaces first. Workspace endpoints sit under /api/{workspaceUuid}
2. Check MIXPOST_CORE_PATH. It's empty by default from Pro v7 but defaults to mixpost in older versions and Lite
3. Create the token as a Viewer-role user when the agent only needs to read
4. Use unschedule-post rather than delete-post when a person wants a post pulled back to draft
5. Expect HTTP 422 with an errors.limit entry when a Cloud plan limit is hit

### Upload-Post API + MCP

1. Send `Authorization: Apikey <key>` on REST. The MCP also takes Bearer
2. Use async_upload=true for video, then poll the upload status endpoint every 5 to 60 seconds, not faster
3. Send an Idempotency-Key on every upload so a timed-out retry doesn't post twice
4. Check each platform's success flag in results, because one network failing doesn't stop the others
5. Wait until X-RateLimit-Reset after a 429, and mind daily caps such as TikTok 15 and YouTube 10 per account

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