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.
npx skills add perasyudha/Nyxora --skill imessagegit clone --depth 1 https://github.com/perasyudha/NyxoraWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/perasyudha/nyxora/imessage)<a href="https://agentmods.dev/skills/perasyudha/nyxora/imessage"><img src="https://agentmods.dev/badge/skills/perasyudha/nyxora/imessage.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00019 | $0.00665 |
| Opus 5 | $0.00010 | $0.00332 |
| Sonnet 5 | $0.00004 | $0.00133 |
| Haiku 4.5 | $0.00002 | $0.00067 |
Grade A, and why
imessage 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 7d 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.
This is a copy
84% identical to imessage — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
iMessage
Use imsg to read and send iMessage/SMS via macOS Messages.app.
Prerequisites
- macOS with Messages.app signed in
- Install:
brew install steipete/tap/imsg - Grant Full Disk Access for terminal (System Settings → Privacy → Full Disk Access)
- Grant Automation permission for Messages.app when prompted
When to Use
- User asks to send an iMessage or text message
- Reading iMessage conversation history
- Checking recent Messages.app chats
- Sending to phone numbers or Apple IDs
When NOT to Use
- Telegram/Discord/Slack/WhatsApp messages → use the appropriate gateway channel
- Group chat management (adding/removing members) → not supported
- Bulk/mass messaging → always confirm with user first
Quick Reference
List Chats
imsg chats --limit 10 --json
View History
# By chat ID
imsg history --chat-id 1 --limit 20 --json
# With attachments info
imsg history --chat-id 1 --limit 20 --attachments --json
Send Messages
# Text only
imsg send --to "+14155551212" --text "Hello!"
# With attachment
imsg send --to "+14155551212" --text "Check this out" --file /path/to/image.jpg
# Force iMessage or SMS
imsg send --to "+14155551212" --text "Hi" --service imessage
imsg send --to "+14155551212" --text "Hi" --service sms
Watch for New Messages
imsg watch --chat-id 1 --attachments
Service Options
--service imessage— Force iMessage (requires recipient has iMessage)--service sms— Force SMS (green bubble)--service auto— Let Messages.app decide (default)
Rules
- Always confirm recipient and message content before sending
- Never send to unknown numbers without explicit user approval
- Verify file paths exist before attaching
- Don't spam — rate-limit yourself
Example Workflow
User: "Text mom that I'll be late"
# 1. Find mom's chat
imsg chats --limit 20 --json | jq '.[] | select(.displayName | contains("Mom"))'
# 2. Confirm with user: "Found Mom at +1555123456. Send 'I'll be late' via iMessage?"
# 3. Send after confirmation
imsg send --to "+1555123456" --text "I'll be late"
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.
- 7d ago First seen · 103 lines · 19 tokens per session scan A f9c8f9fb690d
imessage is a skill published in the GitHub repository perasyudha/Nyxora (5 stars, last pushed 7d ago), licensed MIT. It adds 19 tokens to every session and 665 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 84% identical to imessage, differing in 6 lines, and is treated as a copy.
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