class-intercom

A command-line tool for reading Peninsula School District’s Class Intercom data and preparing social-media drafts. Class Intercom is a school communications platform; the tool does not publish or schedule posts.

In plain words
What is it for?
Use it to read feeds, channels, moderation data, reports, tasks, holidays, and filters, and to create unsent social-post drafts.
Why use it?
It gives an authenticated user a way to inspect school communications data and prepare posts without accidentally publishing them.

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/psd401/psd-claude-plugins/class-intercom
Any agent
npx skills add psd401/psd-claude-plugins --skill class-intercom
Clone the repo
git clone --depth 1 https://github.com/psd401/psd-claude-plugins

Made for: Claude Code, Codex.

Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,350 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 $0.00131 $0.01350
Opus 5 $0.00066 $0.00675
Sonnet 5 $0.00026 $0.00270
Haiku 4.5 $0.00013 $0.00135

Measured 2d ago against content hash d554aae6a9cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

class-intercom 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.

plugins/psd-productivity/skills/class-intercom/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Class Intercom CLI

A self-contained CLI for Peninsula School District's Class Intercom (social media / school comms platform), generated with Printing Press from the live web app and hand-extended for PSD. Read-focused (content feed, channels, social feed, moderation, reports, tasks); the only write is create-draft, which can only create an unsent draft.

Built for PSD's Class Intercom workspace. Auth is your own browser session, so it works for whatever the authenticated account can access.

Setup (one-time)

1. Resolve the binary

The binary is not committed to the repo. Resolve it once — this downloads the prebuilt binary for your platform from the repo's GitHub Release (or builds it from cli/ if you have Go and no network):

BIN="$(bash scripts/ensure-binary.sh)"   # run from this skill's directory
"$BIN" --version

Use "$BIN" for every command below. It caches under ~/.cache/classintercom-pp-cli/, so this is a one-time cost.

2. Authenticate (Chrome cookie)

Auth is a Class Intercom session cookie read from Chrome. Install the cookie extractor once, then log in:

uv tool install pycookiecheat          # one-time; the CLI shells out to it
# Be logged into app.classintercom.com in Chrome, then:
"$BIN" auth login --chrome              # approve the macOS Keychain prompt if shown
"$BIN" auth status                      # should print "Authenticated"

Re-run auth login --chrome if the session expires.

Global flags

Every command supports --json, --csv, --compact, --agent (all agent-friendly defaults), --dry-run, and --select <fields>. Framework commands sync (mirror to local SQLite), search, and api (browse all endpoints) are also available.

Read commands

Channels

"$BIN" channels --json          # social channels with their UUIDs (value), network, label

The value field is the channel UUID you pass to create-draft --channel.

Content / activities (content <cmd>)

Read the full file on GitHub · 111 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 111 lines · 131 tokens per session scan A d554aae6a9cd

Subscribe to this mod's changes

class-intercom is a skill published in the GitHub repository psd401/psd-claude-plugins (2 stars, last pushed 9d ago), licensed MIT. It adds 131 tokens to every session and 1,350 once invoked, about $0.0007 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 2026-08-31.

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