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 Creativestefan/mailbridge-mcp --skill manage-accountsgit clone --depth 1 https://github.com/Creativestefan/mailbridge-mcpWrote 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/creativestefan/mailbridge-mcp/manage-accounts)<a href="https://agentmods.dev/skills/creativestefan/mailbridge-mcp/manage-accounts"><img src="https://agentmods.dev/badge/skills/creativestefan/mailbridge-mcp/manage-accounts/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/creativestefan/mailbridge-mcp/manage-accounts"><img src="https://agentmods.dev/badge/skills/creativestefan/mailbridge-mcp/manage-accounts.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 | $0.00069 | $0.00722 |
| Opus 5 | $0.00034 | $0.00361 |
| Sonnet 5 | $0.00014 | $0.00144 |
| Haiku 4.5 | $0.00007 | $0.00072 |
Grade B, and why
manage-accounts scanned grade B with 1 finding 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 11d 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.
Subtle steeringmediumPrompt injection
Instructions that bias recommendations or shape behaviour without the user noticing.
**Always call the tool directly — never tell the user they need to switch accounts first.** How it starts
The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Use the mailbridge account tools to manage accounts. Passwords are stored in
your OS credential store (macOS Keychain, Windows Credential Manager, or Linux Keyring) — never in any file.
Opening the Setup Portal
To connect an account or add a new one, call open_setup. This opens a browser
form where the user fills in their email and password. Credentials go straight
to the OS credential store on submit — nothing passes through chat.
Use this when the user says:
- "connect my email", "add an account", "open setup", "reconnect my email"
- Or whenever
check_connectionreturns "No email account connected"
Adding via Chat (Fallback)
If the user prefers to add an account directly, use add_account. Warn them first:
"Your password will be passed through this chat to be saved in your credential store. The setup portal (browser form) is more private — would you prefer that instead?"
If they proceed, collect: name, email, password, and provider (icloud/gmail/outlook/yahoo).
For iCloud, remind them:
- Go to appleid.apple.com → Sign-In & Security → App-Specific Passwords → +
- Name it "Mailbridge" — copy the
xxxx-xxxx-xxxx-xxxxpassword - Their main Apple ID password will NOT work
Listing Accounts
Call list_accounts — show results with ✅ marking the active account.
Switching Accounts
Call list_accounts first to show what's available.
If the account they want already exists, call switch_account. Confirm with: "Switched to [label]."
If the account doesn't exist yet, say:
"That account isn't set up yet. Want me to open the setup so you can add it?"
If they say yes, call open_setup.
No Account Connected
If any tool returns "No email account connected", respond:
"Your email isn't connected yet. Want me to open the setup so you can connect it? It only takes a moment."
If they say yes, call open_setup.
Removing Accounts
Always call the tool directly — never tell the user they need to switch accounts first.
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.
- 11d ago First seen · 77 lines · 69 tokens per session scan B 9c9abb82b0e1
manage-accounts is a skill published in the GitHub repository Creativestefan/mailbridge-mcp (2 stars, last pushed 2mo ago), licensed MIT. It adds 69 tokens to every session and 722 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (subtle steering). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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