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 benelser/imessage-tools --skill imessage-group-creategit clone --depth 1 https://github.com/benelser/imessage-toolsWrote 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/benelser/imessage-tools/imessage-group-create)<a href="https://agentmods.dev/skills/benelser/imessage-tools/imessage-group-create"><img src="https://agentmods.dev/badge/skills/benelser/imessage-tools/imessage-group-create/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/benelser/imessage-tools/imessage-group-create"><img src="https://agentmods.dev/badge/skills/benelser/imessage-tools/imessage-group-create.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00012 | $0.00280 |
| Opus 5.5 | $0.00005 | $0.00112 |
| Sonnet 5.5 | $0.00002 | $0.00056 |
| Haiku 4.5 | $0.00001 | $0.00028 |
Grade A, and why
imessage-group-create 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 1mo 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.
What it actually says
Create a new iMessage group chat interactively.
Step 1: Ask who should be in the group
Ask the user for names, phone numbers, or a mix. They can provide comma-separated values.
Step 2: Resolve contacts
Run:
imessage-tools create-group resolve $ARGUMENTS
Parse the JSON output and present a clean numbered list to the user:
- Show each resolved contact with name and number
- Flag any ambiguous matches and ask the user to pick
- Flag any not-found names and ask for corrections
Step 3: Confirm the roster
Show the final list and ask: "Look good? You can +Name to add or -Name to remove, or 'yes' to proceed." If they add/remove, re-resolve and show the updated list.
Step 4: Get the first message
Ask: "What should the first message be?"
Step 5: Create the group
Run:
imessage-tools create-group send "phone1,phone2,..." "message"
Show the result. Note: group naming must be done in Messages.app after creation.
IMPORTANT: Always confirm with the user before running the send step. Never create the group without explicit "yes" confirmation.
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.
- 1mo ago First seen · 37 lines · 12 tokens per session scan A a23a58529e47
imessage-group-create is a skill published in the GitHub repository benelser/imessage-tools (3 stars, last pushed 6d ago), licensed MIT. It adds 12 tokens to every session and 280 once invoked, about $0.0000 per session on Opus 5.5. 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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