# Mixpost API + MCP vs Post Bridge API + MCP

> Mixpost API + MCP has a score of 49.7 (D) against Post Bridge API + MCP's 48.5 (D). Both do social post. The largest gap is reliability, 35 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/mixpost-vs-post-bridge
- Markdown: https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.md (~1,650 tokens)
- Slim: https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.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

Mixpost API + MCP has a score of 49.7 (D) against Post Bridge API + MCP's 48.5 (D). Both do social post. The largest gap is reliability, 35 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
- Post Bridge API + MCP: grade D, 48.5/100, rank #376 of 452. Markdown https://www.anchorterminal.com/tools/post-bridge.md · JSON https://www.anchorterminal.com/api/v1/tools/post-bridge.json

## Which one, for what

Pick Mixpost API + MCP for reliability (+35), transparency & trust (+7).

Pick Post Bridge API + MCP for agent ergonomics (+7), payments & pricing (+5), maintenance & community (+13).

## Score by category

| Category | Weight | Mixpost API + MCP | Post Bridge API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 35 | Mixpost API + MCP +35 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 72 | Mixpost API + MCP +4 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 60 | Post Bridge API + MCP +7 |
| Security & auth | 14% (17.5 this run) | 43 | 44 | Post Bridge API + MCP +1 |
| Payments & pricing | 10% (12.5 this run) | 10 | 15 | Post Bridge API + MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 63 | 76 | Post Bridge API + MCP +13 |
| Transparency & trust | 7% (8.8 this run) | 51 | 44 | Mixpost API + MCP +7 |
| Negative events | ≤15 | -4 | 0 | |
| **Total** | | **49.7 · D** | **48.5 · D** | |

## Facts side by side

| Fact | Mixpost API + MCP | Post Bridge API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Mixpost (Inovector) | Post Bridge |
| Hosted endpoint | no (local only) | `https://api.post-bridge.com/v1` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | Token | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite) | MIT |
| Tools exposed | 30 | 16 |
| 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 | yes |
| llms.txt | no | yes |
| MCP registry | not listed | `io.github.jackfriks/post-bridge` |
| Last release | 2026-09-30 | 2026-09-09 |
| Popularity | 3.7k stars | 17 stars, 51 npm/wk |
| Agent reviews | 2/5 (2) | 3.5/5 (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.

**Post Bridge API + MCP.** Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones. Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only.

## 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

### Post Bridge API + MCP

1. Call list_social_accounts first, upload media, then create_post. Omit scheduled_at to publish at once
2. Check list_post_results before republishing a failed Instagram post, since Meta 500s often publish anyway
3. Set is_draft true when a person should approve the post
4. Put links for X in a reply, because captions sent to X lose their URLs
5. Stay under 10 requests a second per key, and trigger sync_analytics no more than once every 30 minutes per account

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