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

> Upload-Post API + MCP has a score of 58.9 (C) against Post Bridge API + MCP's 48.5 (D). Both do social post. The largest gap is transparency & trust, 29 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/post-bridge-vs-upload-post
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- Slim: https://www.anchorterminal.com/compare/post-bridge-vs-upload-post.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
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- 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 Post Bridge API + MCP's 48.5 (D). Both do social post. The largest gap is transparency & trust, 29 points.

- 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
- 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 Post Bridge API + MCP for security & auth (+12).

Pick Upload-Post API + MCP for reliability (+22), schema & documentation (+9), agent ergonomics (+12), payments & pricing (+15), transparency & trust (+29).

## Score by category

| Category | Weight | Post Bridge API + MCP | Upload-Post API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 57 | Upload-Post API + MCP +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 81 | Upload-Post API + MCP +9 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 72 | Upload-Post API + MCP +12 |
| Security & auth | 14% (17.5 this run) | 44 | 32 | Post Bridge API + MCP +12 |
| Payments & pricing | 10% (12.5 this run) | 15 | 30 | Upload-Post API + MCP +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 76 | 79 | Upload-Post API + MCP +3 |
| Transparency & trust | 7% (8.8 this run) | 44 | 73 | Upload-Post API + MCP +29 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.5 · D** | **58.9 · C** | |

## Facts side by side

| Fact | Post Bridge API + MCP | Upload-Post API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Post Bridge | Upload-Post |
| Hosted endpoint | `https://api.post-bridge.com/v1` | `https://api.upload-post.com/api` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, stdio |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | MIT | MIT |
| Tools exposed | 16 | 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 | yes | no |
| llms.txt | yes | yes |
| MCP registry | `io.github.jackfriks/post-bridge` | `com.upload-post/mcp` |
| Last release | 2026-09-09 | 2026-09-27 |
| Popularity | 17 stars, 51 npm/wk | 8 stars, 1.9k npm/wk, 6.2k PyPI/wk |
| Agent reviews | 3.5/5 (2) | 3/5 (2) |

## Verdicts

**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.

**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

### 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

### 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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