Postproxy

Product Introduction

1. Definition: Postproxy is a unified social media publishing API (technical category: API-as-a-Service for social automation). It consolidates cross-platform publishing into one RESTful endpoint.
2. Core Value Proposition: Eliminates fragmented social platform integrations by providing deterministic publishing infrastructure for developers automating content at scale, with explicit state handling and built-in failure recovery.

Main Features

1. Unified Publishing Endpoint:
   • How it works: Accepts standardized JSON payloads via POST /v1/posts, then transforms content per platform rules (e.g., truncating text for Twitter, resizing media for Instagram). Uses internal adapters for Facebook Graph API, Instagram Graph API, TikTok API, etc.
   • Technologies: REST API architecture, OAuth 2.0 token management, platform-specific SDK abstraction.
2. Explicit State & Retry Engine:
   • How it works: Returns granular status codes (e.g., queued, published, failed:rate_limit) for each profile. Automatically retries transient errors (rate limits, timeouts) via exponential backoff.
   • Technologies: Idempotency keys, Redis job queues, platform error-code mapping.
3. Cross-Platform Validation:
   • How it works: Pre-validates media dimensions, text length, and link formats against each platform’s rules before publishing. Rejects invalid requests early (e.g., "Instagram carousel requires 2–10 images").
   • Technologies: Rule engines using platform policy datasets, dynamic schema validation.

Problems Solved

1. Pain Point: Fragmented platform integrations requiring separate SDKs, OAuth flows, and error handling for each social network.
   • Keywords: social media API fragmentation, cross-platform publishing complexity.
2. Target Audience:
   • Developers building automated content pipelines (e.g., AI-generated posts via LLMs).
   • Marketing operations teams managing multi-brand/multi-region accounts.
   • SaaS platforms embedding social publishing (e.g., CMS, analytics tools).
3. Use Cases:
   • AI agents publishing generated content to 10+ platforms simultaneously.
   • CI/CD pipelines triggering product launch announcements on LinkedIn/Twitter.
   • Multi-language campaigns routing localized posts to region-specific accounts.

Unique Advantages

1. Differentiation: Unlike social media management tools (Hootsuite, Buffer), Postproxy is API-first—no UI, designed for server-to-server integration. Competitors lack deterministic state handling (e.g., "silent failures" in webhooks).
2. Key Innovation: Treats publishing as infrastructure—abstracts platform volatility via:
   • State Machine Architecture: Every publish operation transitions through explicit states (e.g., pending → published/failed), enabling programmatic recovery.
   • Quota-Aware Scheduler: Dynamically queues posts based on real-time platform rate limits.

Frequently Asked Questions (FAQ)

1. How does Postproxy handle social platform API changes?
   Postproxy maintains platform adapters that abstract API version updates, ensuring backward compatibility without client code changes.
2. Can Postproxy publish to private LinkedIn or Facebook groups?
   Yes, via granular OAuth scopes. Supports Pages, Groups, Profiles, and Business Accounts across all integrated platforms.
3. What happens if Instagram’s API rejects a post after 3 retries?
   Postproxy returns a failed state with platform-specific error codes (e.g., policy_violation) and logs diagnostic metadata for debugging.
4. Does Postproxy support video and carousel posts?
   Yes, via media array in payloads. Automatically converts formats/resolutions per platform specs (e.g., TikTok MP4 requirements).
5. How to integrate Postproxy with n8n or Zapier?
   Use the HTTP Request node to call POST /v1/posts, mapping workflow data to Postproxy’s schema. Prebuilt n8n templates are available in documentation.