zernio

A command-line tool for scheduling and publishing social-media posts across multiple platforms from a terminal or AI agent.

In plain words
What is it for?
It is for connecting social accounts, creating scheduled posts, checking their status, and viewing post analytics when the analytics add-on is available.
Why use it?
It keeps users from needing separate publishing workflows for each connected social account.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/zernio-dev/zernio-cli/zernio-cli
Any agent
npx skills add zernio-dev/zernio-cli --skill zernio-cli
Clone the repo
git clone --depth 1 https://github.com/zernio-dev/zernio-cli

Made for: Claude Code, Codex.

Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,969 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00024 $0.02969
Opus 5 $0.00012 $0.01484
Sonnet 5 $0.00005 $0.00594
Haiku 4.5 $0.00002 $0.00297

Measured 2d ago against content hash 56196bcfa78a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

zernio scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

SKILL.md · 371 lines

How it starts

The opening of the file, as written. The whole thing — 371 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Zernio CLI

Schedule and publish social media posts across 13 platforms (Instagram, TikTok, X/Twitter, LinkedIn, Facebook, Threads, YouTube, Bluesky, Pinterest, Reddit, Snapchat, Telegram, Google Business) from any terminal or AI agent.

Setup

npm install -g @zernio/cli

# Log in via browser (recommended)
zernio auth:login

# Or set your API key manually
zernio auth:set --key "sk_your-api-key"

# Verify it works
zernio auth:check

Or set the env var directly: export ZERNIO_API_KEY="sk_your-api-key"

Core Workflow

The typical flow for scheduling a post:

# 1. See your profiles
zernio profiles:list

# 2. See connected social accounts
zernio accounts:list

# 3. Schedule a post
zernio posts:create --text "Hello world!" --accounts <accountId1>,<accountId2> --scheduledAt "2025-01-15T10:00:00Z"

# 4. Check post status
zernio posts:list --status scheduled

# 5. View analytics (requires analytics add-on)
zernio analytics:posts --profileId <profileId>

Output Format

All commands output JSON by default (for AI agents and piping). Add --pretty for indented output.

Errors always return: {"error": true, "message": "...", "status": 401}

Commands Reference

Authentication

# Log in via browser (opens browser, creates API key automatically)
zernio auth:login

# Or with a custom device name
zernio auth:login --device-name "my-server"

# Save API key manually
zernio auth:set --key "sk_your-api-key"

# Optionally set custom API URL
zernio auth:set --key "sk_..." --url "https://custom.api.url/api/v1"

# Verify key works
zernio auth:check

Profiles

# List all profiles
zernio profiles:list

# Create a profile
zernio profiles:create --name "My Brand"

# Get profile details
zernio profiles:get <profileId>

# Update profile
zernio profiles:update <profileId> --name "New Name"

# Delete profile (must have no connected accounts)
zernio profiles:delete <profileId>

Accounts (Social Media Connections)

# List all connected accounts
zernio accounts:list

# Filter by profile or platform
zernio accounts:list --profileId <id> --platform instagram

# Get single account
zernio accounts:get <accountId>

# Check health of all accounts (rate limits, token expiry)
zernio accounts:health

Read the full file on GitHub · 371 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 371 lines · 24 tokens per session scan A 56196bcfa78a

Subscribe to this mod's changes

zernio is a skill published in the GitHub repository zernio-dev/zernio-cli (24 stars, last pushed 1mo ago), licensed MIT. It adds 24 tokens to every session and 2,969 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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