# OneUp API + MCP vs Postiz API + MCP

> Postiz API + MCP has a score of 59.5 (C) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is schema & documentation, 61 points. Category scores, facts, verdicts and agent notes side by side.

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- Slim: https://www.anchorterminal.com/compare/oneup-vs-postiz.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/oneup-vs-postiz.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

Postiz API + MCP has a score of 59.5 (C) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is schema & documentation, 61 points.

- OneUp API + MCP: grade F, 24.8/100, rank #445 of 452. Markdown https://www.anchorterminal.com/tools/oneup.md · JSON https://www.anchorterminal.com/api/v1/tools/oneup.json
- Postiz API + MCP: grade C, 59.5/100, rank #265 of 452. Markdown https://www.anchorterminal.com/tools/postiz.md · JSON https://www.anchorterminal.com/api/v1/tools/postiz.json

## Which one, for what

Pick OneUp API + MCP for nothing in particular (no category where it leads by five points or more).

Pick Postiz API + MCP for reliability (+35), schema & documentation (+61), agent ergonomics (+34), security & auth (+32), payments & pricing (+20), maintenance & community (+42), transparency & trust (+40).

## Score by category

| Category | Weight | OneUp API + MCP | Postiz API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 18 | 53 | Postiz API + MCP +35 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 27 | 88 | Postiz API + MCP +61 |
| Agent ergonomics | 13% (16.2 this run) | 31 | 65 | Postiz API + MCP +34 |
| Security & auth | 14% (17.5 this run) | 17 | 49 | Postiz API + MCP +32 |
| Payments & pricing | 10% (12.5 this run) | 10 | 30 | Postiz API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 43 | 85 | Postiz API + MCP +42 |
| Transparency & trust | 7% (8.8 this run) | 43 | 83 | Postiz API + MCP +40 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **24.8 · F** | **59.5 · C** | |

## Facts side by side

| Fact | OneUp API + MCP | Postiz API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | OneUp | Postiz (Gitroom) |
| Hosted endpoint | `https://www.oneupapp.io/api` | `https://api.postiz.com/public/v1` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | none | AGPL-3.0 |
| Tools exposed | 50 | 13 |
| 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 | not listed |
| Last release | none | 2026-09-22 |
| Popularity | none | 37k stars, 368 npm/wk |
| Agent reviews | 1.5/5 (2) | 3/5 (2) |

## Verdicts

**OneUp API + MCP.** API and MCP on every plan from $25 a month ($15 billed yearly). API key in the query string on REST and in the MCP URL, with no scopes.

**Postiz API + MCP.** AGPL-3.0 and self-hostable with the API and MCP included, 34 platforms. Create-post capped at 90 requests an hour on every Cloud plan.

## Before you call either

### OneUp API + MCP

1. Call listcategory, then listcategoryaccount, then schedule. Pass social_network_id as ALL to post to every account in a category
2. Keep the ?apiKey= URLs out of logs and shared configs, and regenerate the key on the API Access page if one leaks
3. Set requireApproval or isDraftPost true when a person should review before anything goes out
4. Page through lists with start, 50 posts at a time
5. Give dates as YYYY-MM-DD HH:MM with no timezone field, so confirm the account timezone first

### Postiz API + MCP

1. Send the key as the `Authorization` header with no `Bearer` prefix on REST calls
2. Batch several posts into one create request to stay under 90 an hour
3. Call integrationSchema (Get Settings) for a channel before scheduling, since each network has its own settings
4. Use the Bearer header on /mcp rather than /mcp/{key} so the key stays out of logs
5. Read output.errors on a failed schedule call and retry with the corrected fields

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