# Social media posting and scheduling APIs for AI agents (slim)

> 10 social media posting APIs ranked by the Anchor benchmark. Leader Zernio (formerly Late) API + MCP (B). APIs that publish and schedule posts across social networks from one call, and read back comments and analytics. Compared on which networks they reach, which of those need an app review or a business account, price per connected profile, media support, and whether you can host it yourself.

- Full: https://www.anchorterminal.com/categories/social-media.md (~4,550 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/categories/social-media.json · canonical https://www.anchorterminal.com/categories/social-media
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

- Tools: 10 · agent-ready (BB+): 0 · accept x402: 0 · JSON: https://www.anchorterminal.com/api/v1/tools.json · by capability: https://www.anchorterminal.com/api/v1/capabilities.json
- Capabilities: social.post, social.schedule, social.analytics, social.comments, social.media-upload

| # | Tool | Grade | Score | Confidence | x402 | Auth | Where | Slim |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 139 | Zernio (formerly Late) API + MCP | B | 67.5 | medium | no | OAuth or key | hosted + local | https://www.anchorterminal.com/tools/late.min.md |
| 220 | Buffer API + MCP | B | 62.3 | medium | no | OAuth or key | hosted | https://www.anchorterminal.com/tools/buffer.min.md |
| 265 | Postiz API + MCP | C | 59.5 | medium | no | OAuth or key | hosted | https://www.anchorterminal.com/tools/postiz.min.md |
| 275 | Upload-Post API + MCP | C | 58.9 | medium | no | OAuth or key | hosted + local | https://www.anchorterminal.com/tools/upload-post.min.md |
| 295 | Ayrshare API + MCP | C | 57.3 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/ayrshare.min.md |
| 368 | Mixpost API + MCP | D | 49.7 | medium | no | Token | local | https://www.anchorterminal.com/tools/mixpost.min.md |
| 376 | Post Bridge API + MCP | D | 48.5 | medium | no | OAuth or key | hosted | https://www.anchorterminal.com/tools/post-bridge.min.md |
| 388 | Publer API + MCP | D | 47.1 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/publer.min.md |
| 428 | Metricool API + MCP | E | 38.7 | low | no | OAuth or key | hosted | https://www.anchorterminal.com/tools/metricool.min.md |
| 445 | OneUp API + MCP | F | 24.8 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/oneup.min.md |