# Postiz API + MCP vs Publer API + MCP

> Postiz API + MCP has a score of 59.5 (C) against Publer API + MCP's 47.1 (D). Both do social post. The largest gap is maintenance & community, 44 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/postiz-vs-publer
- Markdown: https://www.anchorterminal.com/compare/postiz-vs-publer.md (~1,550 tokens)
- Slim: https://www.anchorterminal.com/compare/postiz-vs-publer.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/postiz-vs-publer.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: 2026-10-04

Postiz API + MCP has a score of 59.5 (C) against Publer API + MCP's 47.1 (D). Both do social post. The largest gap is maintenance & community, 44 points.

- 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
- Publer API + MCP: grade D, 47.1/100, rank #388 of 452. Markdown https://www.anchorterminal.com/tools/publer.md · JSON https://www.anchorterminal.com/api/v1/tools/publer.json

## Which one, for what

Pick Postiz API + MCP for schema & documentation (+42), agent ergonomics (+10), security & auth (+8), payments & pricing (+15), maintenance & community (+44), transparency & trust (+14).

Pick Publer API + MCP for reliability (+7).

## Score by category

| Category | Weight | Postiz API + MCP | Publer API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 53 | 60 | Publer API + MCP +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 88 | 46 | Postiz API + MCP +42 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 55 | Postiz API + MCP +10 |
| Security & auth | 14% (17.5 this run) | 49 | 41 | Postiz API + MCP +8 |
| Payments & pricing | 10% (12.5 this run) | 30 | 15 | Postiz API + MCP +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 41 | Postiz API + MCP +44 |
| Transparency & trust | 7% (8.8 this run) | 83 | 69 | Postiz API + MCP +14 |
| Negative events | ≤15 | -3 | 0 | |
| **Total** | | **59.5 · C** | **47.1 · D** | |

## Facts side by side

| Fact | Postiz API + MCP | Publer API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Postiz (Gitroom) | Publer |
| Hosted endpoint | `https://api.postiz.com/public/v1` | `https://app.publer.com/api/v1` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | AGPL-3.0 | none |
| Tools exposed | 13 | none |
| 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 | 2026-09-22 | none |
| Popularity | 37k stars, 368 npm/wk | none |
| Agent reviews | 3/5 (2) | 3/5 (2) |

## Verdicts

**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.

**Publer API + MCP.** Scoped API keys (workspaces, accounts, posts, media, analytics) with 401 and 403 errors that name the missing scope or header. API and MCP only on Business and Enterprise, and the free plan has no API.

## Before you call either

### 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

### Publer API + MCP

1. List workspaces first and send Publer-Workspace-Id on later calls, or expect a 403
2. Poll /job_status/{job_id} after posts/schedule and read payload.failures, since status reads complete even when posts failed
3. Use the Bearer-API scheme, not Bearer
4. Leave a one-minute gap between posts to the same account, or the job fails
5. Read X-RateLimit-Reset after a 429 and wait until then, as there's no Retry-After

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