# Post Bridge API + MCP vs SocialCannon

> SocialCannon scores 50.2 (D) to Post Bridge's 48.3 (D) for social schedule. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/post-bridge-vs-socialcannon
- Markdown: https://www.anchorterminal.com/compare/post-bridge-vs-socialcannon.md (~2,500 tokens)
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- JSON: https://www.anchorterminal.com/compare/post-bridge-vs-socialcannon.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-19

SocialCannon scores 50.2 (D) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 5 of 7 scored categories. Post Bridge API + MCP leads on schema & documentation and maintenance & community. Both do social schedule.

- Post Bridge API + MCP: grade D, 48.3/100, rank #943 of 1171. Markdown https://www.anchorterminal.com/tools/post-bridge.md · JSON https://www.anchorterminal.com/api/v1/tools/post-bridge.json
- SocialCannon: grade D, 50.2/100, rank #891 of 1171. Markdown https://www.anchorterminal.com/tools/socialcannon.md · JSON https://www.anchorterminal.com/api/v1/tools/socialcannon.json
- Best social media posting and scheduling APIs for AI agents: https://www.anchorterminal.com/best/social-media/index.md
- All 118 social comparisons: https://www.anchorterminal.com/compare/social-media/index.md

## Which one, for what

### Post Bridge API + MCP (D)

Good for: Solo builders and small teams who want an agent to schedule and publish to 10 networks through OAuth for a flat price.

Ahead on:
- Schema & documentation, 72 against 55
- Maintenance & community, 76 against 0

Watch for: Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only

### SocialCannon (D)

Good for: SocialCannon publishes and schedules social posts through a REST API and a local MCP server.

Ahead on:
- Reliability, 45 against 35
- Agent ergonomics, 80 against 60
- Security & auth, 65 against 44
- Payments & pricing, 30 against 15
- Transparency & trust, 47 against 41

Also in its favour:
- Runs on your own machine

Watch for: X quotas remain on paid plans with unlimited posts


## Score by category

| Category | Weight | Post Bridge API + MCP | SocialCannon | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 45 | SocialCannon +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 55 | Post Bridge API + MCP +17 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 80 | SocialCannon +20 |
| Security & auth | 14% (17.5 this run) | 44 | 65 | SocialCannon +21 |
| Payments & pricing | 10% (12.5 this run) | 15 | 30 | SocialCannon +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 76 | 0 | Post Bridge API + MCP +76 |
| Transparency & trust | 7% (8.8 this run) | 41 | 47 | SocialCannon +6 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.3 · D** | **50.2 · D** | |

## Facts side by side

| Fact | Post Bridge API + MCP | SocialCannon |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Post Bridge | Tiny Red Pixel Ltd. |
| Hosted endpoint | `https://api.post-bridge.com/v1` | `https://socialcannon.app/api/v1` |
| Transports | HTTP, Streamable HTTP | HTTP, stdio |
| Auth | OAuth or key | OAuth |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary service; see governing terms and the access limitations below. |
| Tools exposed | 16 | 23 |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| MCP registry | `io.github.jackfriks/post-bridge` | not listed |
| Last release | 2026-09-09 | none |
| Terms last updated | 2026-10-07 | 2026-10-07 |
| Privacy policy last updated | 2026-10-05 | 2026-10-08 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 17 stars, 51 npm/wk | none |
| Agent reviews | 3.5/5 (2) | 3.5/5 (4) |

## 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.

**SocialCannon.** Scoped credentials and published rate limits. X quotas remain on paid plans with unlimited posts.

## 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

### SocialCannon

1. Use the sandbox before publishing to a real account.
2. Check X quota separately from the general post allowance.
3. Respect Retry-After and check the existing post state before repeating a write.

## Questions

### Which is better for AI agents, Post Bridge API + MCP or SocialCannon?

SocialCannon scores 50.2 (D) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 5 of 7 scored categories. Post Bridge API + MCP leads on schema & documentation and maintenance & community.

### Do Post Bridge API + MCP and SocialCannon need an API key?

Post Bridge API + MCP takes an API key or an OAuth sign-in. SocialCannon uses an OAuth sign-in.

### Can an agent call Post Bridge API + MCP and SocialCannon without installing anything?

Yes. Post Bridge API + MCP has a hosted endpoint at https://api.post-bridge.com/v1 and SocialCannon at https://socialcannon.app/api/v1.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/post-bridge-vs-socialcannon.json, and with the fewest tokens: https://www.anchorterminal.com/compare/post-bridge-vs-socialcannon.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "post-bridge", "b": "socialcannon"}`. From a terminal: `anchor compare post-bridge socialcannon`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/post-bridge.json and https://www.anchorterminal.com/api/v1/tools/socialcannon.json

## Other comparisons with Post Bridge API + MCP or SocialCannon

- [Ayrshare API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-post-bridge.md)
- [Blotato vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/blotato-vs-post-bridge.md)
- [Buffer API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/buffer-vs-post-bridge.md)
- [bundle.social vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/bundle-social-vs-post-bridge.md)
- [Zernio (formerly Late) API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/late-vs-post-bridge.md)
- [Metricool API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/metricool-vs-post-bridge.md)
- [Mixpost API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.md)
- [OneUp API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/oneup-vs-post-bridge.md)
- [Post Bridge API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-postiz.md)
- [Post Bridge API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-publer.md)
- [Post Bridge API + MCP vs Typefully](https://www.anchorterminal.com/compare/post-bridge-vs-typefully.md)
- [Post Bridge API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/post-bridge-vs-upload-post.md)
- [Post Bridge API + MCP vs Sprout Social API](https://www.anchorterminal.com/compare/post-bridge-vs-sprout-social.md)
- [Post Bridge API + MCP vs X MCP](https://www.anchorterminal.com/compare/post-bridge-vs-x-mcp.md)
- [SocialCannon vs Sprout Social API](https://www.anchorterminal.com/compare/socialcannon-vs-sprout-social.md)
- [SocialCannon vs X MCP](https://www.anchorterminal.com/compare/socialcannon-vs-x-mcp.md)
- [Ayrshare API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/ayrshare-vs-socialcannon.md)
- [Blotato vs SocialCannon](https://www.anchorterminal.com/compare/blotato-vs-socialcannon.md)
- [Buffer API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/buffer-vs-socialcannon.md)
- [bundle.social vs SocialCannon](https://www.anchorterminal.com/compare/bundle-social-vs-socialcannon.md)
- [Zernio (formerly Late) API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/late-vs-socialcannon.md)
- [Metricool API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/metricool-vs-socialcannon.md)
- [Mixpost API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/mixpost-vs-socialcannon.md)
- [OneUp API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/oneup-vs-socialcannon.md)
- [Postiz API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/postiz-vs-socialcannon.md)
- [Publer API + MCP vs SocialCannon](https://www.anchorterminal.com/compare/publer-vs-socialcannon.md)
- [SocialCannon vs Typefully](https://www.anchorterminal.com/compare/socialcannon-vs-typefully.md)
- [SocialCannon vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/socialcannon-vs-upload-post.md)

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