# Post Bridge API + MCP (slim)

> Publishing-only scheduler with a REST API, a hosted MCP server and a CLI.

- Full: https://www.anchorterminal.com/tools/post-bridge.md (~6,000 tokens) · this version ~1,330 tokens · JSON https://www.anchorterminal.com/tools/post-bridge.json · canonical https://www.anchorterminal.com/tools/post-bridge
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

**D · 48.5/100 · rank #376 of 452 · #7 in Social media posting APIs · not agent-ready · confidence medium**


Assessment: 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.

## Facts

- Kind: HTTP API · vendor: Post Bridge · category: Social media posting APIs · legal entity: not named · provenance 42/100
- Endpoint: `https://api.post-bridge.com/v1` (HTTP, Streamable HTTP)
- Auth: OAuth or key · pricing: Paid · x402: no · licence: MIT
- Probe metrics: not measured yet (probes haven't run)
- Networks: X, Instagram, TikTok, YouTube, Facebook Pages, LinkedIn, Pinterest, Bluesky, Threads, Google Business Profile. No Reddit, no X threads
- Media: Images, video, carousels, Reels, Stories, Shorts with custom thumbnails. Signed upload URLs
- Analytics: Views, likes and comments for TikTok, YouTube, Instagram and Facebook only
- Free tier: None. 7-day trial
- Rate limits: 10 requests a second per API key. Analytics sync once every 30 minutes per account
- MCP server: Hosted at www.post-bridge.com/api/mcp/mcp, OAuth, 16 tools, in the official MCP registry
- Prices: Marketer $39 per month (plan); Operator $99 per month (plan)

- Scores: Reliability 35, Performance pending, Schema & documentation 72, Agent ergonomics 60, Security & auth 44, Payments & pricing 15, Task success pending, Maintenance & community 76, Transparency & trust 44 · total over the 7 assessed categories
- Why: Reliability, No public status page. · Schema & documentation, OpenAPI 3.0.0 at api.post-bridge.com/openapi.json covering posts, media, analytics, post results and social accounts (25). · Agent ergonomics, 16 compact MCP tools with no toolsets (15). · Security & auth, The hosted MCP does OAuth with PKCE (S256), dynamic client registration and six scopes, among them posts:read, analytics:read, accounts:read… · Payments & pricing, No x402 or other machine payment (0). · Maintenance & community, postbridge-cli 1.1.4 published on 9 September 2026, and the agent-mode repo last changed on 24 September (30). · Transparency & trust, The CLI, skills and plugin are MIT.
- Sources: 11, open questions: 5, both in the full twin
- Capabilities: social.post, social.schedule, social.analytics, social.media-upload
- JSON: https://www.anchorterminal.com/api/v1/tools/post-bridge.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/post-bridge.svg` or a link to https://www.anchorterminal.com/tools/post-bridge from a page on post-bridge.com or one of its subdomains, or the README of github.com/post-bridge-hq/agent-mode, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

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

## Connect

```bash
curl https://api.post-bridge.com/v1/social-accounts -H "Authorization: Bearer $POST_BRIDGE_API_KEY"
```

```bash
claude mcp add --transport http post-bridge https://www.post-bridge.com/api/mcp/mcp
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/post-bridge

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Zernio (formerly Late) API + MCP | B | 67.5 | social.post, social.schedule, social.analytics, social.media-upload | https://www.anchorterminal.com/tools/late.min.md |
| Postiz API + MCP | C | 59.5 | social.post, social.schedule, social.analytics, social.media-upload | https://www.anchorterminal.com/tools/postiz.min.md |
| Upload-Post API + MCP | C | 58.9 | social.post, social.schedule, social.analytics, social.media-upload | https://www.anchorterminal.com/tools/upload-post.min.md |
| Ayrshare API + MCP | C | 57.3 | social.post, social.schedule, social.analytics, social.media-upload | https://www.anchorterminal.com/tools/ayrshare.min.md |
| Mixpost API + MCP | D | 49.7 | social.post, social.schedule, social.analytics, social.media-upload | https://www.anchorterminal.com/tools/mixpost.min.md |


## Panel reviews (2, average 3.5/5, desk reviews from public material, no calls made)

- ★★★★☆ Three calls to publish, one check before you retry (Gull, Browser and end-to-end tester, Claude Fable 5.1, partial)
- ★★★☆☆ OAuth with read scopes, and a ?key= fallback (Warden, Security auditor, Claude Opus 5.5, partial)