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 aashari/ai-agent-skills --skill mail-contactsgit clone --depth 1 https://github.com/aashari/ai-agent-skillsWrote 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/aashari/ai-agent-skills/mail-contacts)<a href="https://agentmods.dev/skills/aashari/ai-agent-skills/mail-contacts"><img src="https://agentmods.dev/badge/skills/aashari/ai-agent-skills/mail-contacts/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/aashari/ai-agent-skills/mail-contacts"><img src="https://agentmods.dev/badge/skills/aashari/ai-agent-skills/mail-contacts.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 | $0.00067 | $0.00804 |
| Opus 5 | $0.00034 | $0.00402 |
| Sonnet 5 | $0.00013 | $0.00161 |
| Haiku 4.5 | $0.00007 | $0.00080 |
Grade A, and why
mail-contacts 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mail Contacts — Email Directory from Communication History
Query: $ARGUMENTS
Option A: Find a specific person's email address
DB="$HOME/Library/Mail/V10/MailData/Envelope Index"
NAME="<extracted from $ARGUMENTS>"
# Search senders
sqlite3 "$DB" "
SELECT DISTINCT a.address, a.comment as name, COUNT(*) as frequency
FROM messages m
JOIN addresses a ON m.sender = a.ROWID
WHERE (a.comment LIKE '%${NAME}%' OR a.address LIKE '%${NAME}%')
AND m.deleted=0
GROUP BY a.address ORDER BY frequency DESC LIMIT 10;" 2>/dev/null
# Search recipients (emails sent TO them)
sqlite3 "$DB" "
SELECT DISTINCT a.address, a.comment as name, COUNT(*) as frequency
FROM recipients r
JOIN addresses a ON r.address = a.ROWID
WHERE (a.comment LIKE '%${NAME}%' OR a.address LIKE '%${NAME}%')
GROUP BY a.address ORDER BY frequency DESC LIMIT 10;" 2>/dev/null
Option B: Top contacts directory
sqlite3 "$DB" "
SELECT a.address, a.comment as name,
COUNT(*) as emails_received,
MAX(datetime(m.date_received,'unixepoch','localtime')) as last_contact
FROM messages m
JOIN addresses a ON m.sender = a.ROWID
JOIN mailboxes mb ON m.mailbox = mb.ROWID
WHERE m.deleted = 0
AND mb.url NOT LIKE '%Spam%' AND mb.url NOT LIKE '%Sent%'
AND m.automated_conversation = 0
AND m.unsubscribe_type = 0
GROUP BY a.address
ORDER BY emails_received DESC LIMIT 50;" 2>/dev/null
Option C: All contacts from a company/domain
DOMAIN="<extracted from $ARGUMENTS>"
sqlite3 "$DB" "
SELECT DISTINCT a.address, a.comment as name, COUNT(*) as cnt
FROM messages m
JOIN addresses a ON m.sender = a.ROWID
WHERE a.address LIKE '%@${DOMAIN}%' AND m.deleted=0
GROUP BY a.address ORDER BY cnt DESC;" 2>/dev/null
Option D: Recent contacts (last 30 days)
SINCE=$(($(date +%s) - 2592000))
sqlite3 "$DB" "
SELECT DISTINCT a.address, a.comment,
MAX(datetime(m.date_received,'unixepoch','localtime')) as last_seen
FROM messages m
JOIN addresses a ON m.sender = a.ROWID
JOIN mailboxes mb ON m.mailbox = mb.ROWID
WHERE m.date_received >= ${SINCE} AND m.deleted=0
AND mb.url NOT LIKE '%Spam%'
AND m.automated_conversation = 0
AND m.unsubscribe_type = 0
GROUP BY a.address ORDER BY last_seen DESC LIMIT 30;" 2>/dev/null
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.
- 12d ago First seen · 90 lines · 67 tokens per session scan A aa8092e35f55
mail-contacts is a skill published in the GitHub repository aashari/ai-agent-skills (5 stars, last pushed 6mo ago), licensed MIT. It adds 67 tokens to every session and 804 once invoked, about $0.0003 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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