# Postproxy Blog

Technical guides on social media API integration, multi-platform publishing, and automation workflows. Engineering notes from the team building Postproxy.

**April 23, 2026**  
**Making errors actually useful**  
Why Postproxy stopped translating platform errors and started propagating them raw, with hints when they need one.  
[Link](/content/blog/useful-error-messages/index.html)

**April 20, 2026**  
**Salesforce went headless. Social media is next.**  
Salesforce Headless 360 turns the platform into APIs, MCP tools, and CLI commands. Postproxy runs the same pattern for social media publishing.  
[Link](/content/blog/salesforce-headless-360-and-headless-social-media-marketing/index.html)

**April 13, 2026**  
**BYOK Social Media APIs: The Hidden Cost**  
BYOK social media APIs are cheap upfront — but platform verification eats weeks per feature. Here's what the pricing doesn't tell you.  
[Link](/content/blog/byok-social-media-api-hidden-cost-of-bring-your-own-keys/index.html)

**April 2, 2026**  
**Fix Instagram and Facebook Media Fetch**  
How to fix Instagram's 'media could not be fetched from this URI', 'only photo or video accepted', and Facebook's 403 robots.txt errors.  
[Link](/content/blog/instagram-media-not-fetched-facebook-403-robots-txt-errors/index.html)

**April 1, 2026**  
**How to Schedule Posts via API**  
Schedule social media posts via API using timed publishing and queue-based scheduling. Code examples for both approaches with Postproxy.  
[Link](/content/blog/schedule-posts-via-api/index.html)

**March 31, 2026**  
**Social Media Comments API: List, Reply & Hide**  
Manage Instagram, Facebook, and Threads comments programmatically — list, reply, delete, hide, and moderate with a single API.  
[Link](/content/blog/social-media-comments-api-manage-instagram-facebook-comments/index.html)

**March 26, 2026**  
**How to Build a Social Media SaaS Product**  
How to build a social media SaaS: multi-tenant data models, OAuth delegation, scheduled publishing, webhooks, and using a publishing API instead of eight.  
[Link](/content/blog/how-to-build-a-social-media-saas/index.html)

**March 24, 2026**  
**Social Media Aggregator API: Build a Feed**  
Build a social media aggregator API pulling feeds from Instagram, X, LinkedIn, TikTok, YouTube, and Facebook into one view, paired with publishing.  
[Link](/content/blog/social-media-aggregator-api/index.html)

**March 19, 2026**  
**Social Media Monitoring API: Brand Alerts**  
Build social media monitoring and brand listening via API: native search endpoints, the monitoring tool landscape, and closing the loop to automated publishing.  
[Link](/content/blog/social-media-monitoring-api/index.html)

**March 17, 2026**  
**Best MCP Servers in 2026: Developer Guide**  
The best MCP servers in 2026 across dev tools, databases, search, productivity, cloud, and social media — what each does and when to use it.  
[Link](/content/blog/best-mcp-servers-2026/index.html)

**March 13, 2026**  
**Facebook Graph API Posting: Developer Guide**  
Guide to the Facebook Graph API for Page publishing — permissions, token lifecycle, posts, photos, videos, Reels, rate limits, and app review.  
[Link](/content/blog/facebook-graph-api-posting-guide/index.html)

**March 13, 2026**  
**Instagram Reels API Publishing Guide (2026)**  
Instagram Reels API: container creation, video specs, cover images, audio limits, and common errors. Step-by-step with Meta's Content Publishing API.  
[Link](/content/blog/instagram-reels-api-publishing-guide/index.html)