Postcron

Postcron is a social media scheduling and publishing tool that lets marketers, agencies, and small businesses plan, schedule, and automatically publish content across Instagram, Facebook, X (Twitter), LinkedIn, Pinterest, and TikTok from a single dashboard. It supports bulk uploading up to 1,000 posts from Excel or Google Docs, multi-account and team management, automatic image watermarking, a browser extension, and mobile apps for iOS and Android. Originally a Y Combinator / 500 Global-backed startup, Postcron is a consumer- and SMB-facing publishing product; it exposes an internal application API used by its own clients but does not publish a documented public developer API, OpenAPI specification, SDKs, or a developer portal.

Postcron is profiled on the APIs.io network. Tagged areas include Company, Social-Media, Social Media Scheduling, Publishing, and Marketing.

Postcron’s developer surface includes engineering blog, pricing, signup flow, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

16.4/100 emerging ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Social-MediaSocial Media SchedulingPublishing Marketing Content Management Software-as-a-Service

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 16.4/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 8.9 / 20

Operational Transparency 0.3 / 13

Contract Governance 0.0 / 12

Discoverability 5.7 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/postcron: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

Postcron Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Postcron Rate Limits

0 limits

RATE LIMITS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Postcron Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

Source (apis.yml)

aid: postcron
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/postcron.png
name: Postcron
description: Postcron is a social media scheduling and publishing tool that lets marketers, agencies, and small businesses
  plan, schedule, and automatically publish content across Instagram, Facebook, X (Twitter), LinkedIn, Pinterest, and TikTok
  from a single dashboard. It supports bulk uploading up to 1,000 posts from Excel or Google Docs, multi-account and team
  management, automatic image watermarking, a browser extension, and mobile apps for iOS and Android. Originally a Y Combinator
  / 500 Global-backed startup, Postcron is a consumer- and SMB-facing publishing product; it exposes an internal application
  API used by its own clients but does not publish a documented public developer API, OpenAPI specification, SDKs, or a developer
  portal.
url: https://raw.githubusercontent.com/api-evangelist/postcron/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Social-Media
- Social Media Scheduling
- Publishing
- Marketing
- Content Management
- Software-as-a-Service
tags_raw:
- Company
- Social Media
- Social Media Scheduling
- Publishing
- Marketing
- Content Management
- SaaS
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://postcron.com
- type: Blog
  url: https://postcron.com/en/blog
- type: BlogRSS
  url: https://postcron.com/en/blog/feed
- type: Pricing
  url: https://postcron.com/en/pricing
- type: SignUp
  url: https://postcron.com/app/
- type: HelpCenter
  url: https://postcron.com/en/faqs
- type: TermsOfService
  url: https://postcron.com/en/terms_conditions_privacy_policy
- type: PrivacyPolicy
  url: https://postcron.com/en/terms_conditions_privacy_policy
- type: GitHubOrganization
  url: https://github.com/postcron
- type: DomainSecurity
  url: security/postcron-domain-security.yml
- type: LLMsTxt
  url: llms/postcron-llms.txt
- type: Plans
  url: plans/postcron-plans-pricing.yml
- type: RateLimits
  url: rate-limits/postcron-rate-limits.yml
x-enrichment:
  date: '2026-08-13'
  status: minimal
  artifacts_added: 4
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: Postcron ships only an end-user scheduling app — there is no developer portal, API reference, spec, SDK or webhook
    surface anywhere on postcron.com, and the two hosts that do answer (postcron.com/api/ and api.postcron.com/api/v1/) are
    the web app's own undocumented backends, which reject every unauthenticated call with "You need send a token".
  evidence:
  - url: https://postcron.com/en/api
    status: 404
  - url: https://postcron.com/api/
    status: 401
  - url: https://api.postcron.com/openapi.json
    status: 404
  - url: https://postcron.com/.well-known/agent-card.json
    status: 404
  checked: '2026-08-13'

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