cf-temp-mail-agent-mail

cf-temp-mail-agent-mail is a skill for Claude Code from SummerSec/SumSec-Skills. It costs 133 tokens per session (1,979 once invoked), scanned A, original, Apache-2.0.

An agent skill for using a Cloudflare temporary-mail inbox with a user-provided Address JWT and API address.

In plain words
What is it for?
Listing inbox messages, fetching a specific message, and sending email through the service's mail API.
Why use it?
It provides a defined way to access, retrieve, and send parsed mail when the required mailbox credentials are available.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Codex; built for openclaw.

Part of the cloudflare-email plugin — 1 skill shipped together

Good fit Listing inbox messages, fetching a specific message, and sending email through the service's mail API.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/summersec/sumsec-skills/cf-temp-mail-agent-mail
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.

Any agent
npx skills add SummerSec/SumSec-Skills --skill cf-temp-mail-agent-mail
Clone the repo
git clone --depth 1 https://github.com/SummerSec/SumSec-Skills

Made for: Claude Code.

Or install cloudflare-email, the plugin that ships this one along with the rest of its 1 skill.

Wrote 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.

agentmods badge for cf-temp-mail-agent-mail

README.md
[![agentmods](https://agentmods.dev/badge/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail/github.svg)](https://agentmods.dev/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail)
Your own site
<a href="https://agentmods.dev/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail"><img src="https://agentmods.dev/badge/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail/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.

agentmods 80×15 button for cf-temp-mail-agent-mail

Your own site · 80×15
<a href="https://agentmods.dev/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail"><img src="https://agentmods.dev/badge/skills/summersec/sumsec-skills/cf-temp-mail-agent-mail.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,979 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00133 $0.01979
Opus 5 $0.00067 $0.00989
Sonnet 5 $0.00027 $0.00396
Haiku 4.5 $0.00013 $0.00198

Measured 10d ago against content hash ee9be3def040, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cf-temp-mail-agent-mail scanned grade A 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 10d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "$BASE/api/settings" -H "Authorization: Bearer $JWT"
cloudflare-email/skills/cf-temp-mail-agent-mail/SKILL.md · 199 lines

How it starts

The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Temp-Mail Agent Usage

Prerequisites

The user must first open the frontend (e.g. https://mail.example.com) in a browser and create or log into a mailbox address. This step may require passing a Turnstile CAPTCHA that agents cannot complete. After that, the Address JWT is displayed in the frontend UI and can be copied directly.

Inputs the user must provide

  • BASE - API base URL, e.g. https://mail.example.com.
  • JWT - Address JWT, visible and copyable from the frontend UI after creating or logging into a mailbox.
  • (optional) SITE_PASSWORD - only if the deployment enabled x-custom-auth.

If anything is missing, ask the user before making requests.

Credential persistence

To avoid asking every time, save credentials to ~/.cf-temp-mail/credentials.json:

{
  "base": "https://mail.example.com",
  "jwt": "<ADDRESS_JWT>",
  "site_password": ""
}

On first use, if the file exists, read and use it. If not, ask the user and save for next time. Before each request, validate the JWT via GET /api/settings - if it returns 401, inform the user the JWT is expired and ask for a fresh one, then update the file.

Required headers

  • Authorization: Bearer <JWT> - on every /api/* request.
  • x-custom-auth: <SITE_PASSWORD> - only when the site requires it.
  • x-lang: en or zh - optional, error-message language.

Do not send the Address JWT as x-user-token - that is a different JWT type and will yield 401 InvalidAddressCredentialMsg.

Primary path: parsed endpoints

Task Method Path Returns
Address info GET /api/settings { address, send_balance }
List parsed mails GET /api/parsed_mails'limit=&offset= { results: [parsedMail], count }
Get one parsed mail GET /api/parsed_mail/:id parsedMail

Read the full file on GitHub · 199 lines

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. 10d ago First seen · 199 lines · 133 tokens per session scan A ee9be3def040

Subscribe to this mod's changes

cf-temp-mail-agent-mail is a skill published in the GitHub repository SummerSec/SumSec-Skills (8 stars, last pushed 26d ago), licensed Apache-2.0. It adds 133 tokens to every session and 1,979 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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