email-normalize-post-normalize

email-normalize-post-normalize is a skill for Claude Code from bobadilla-tech/requiems-api-skills. It costs 27 tokens per session (497 once invoked), scanned A, original, MIT.

A web endpoint that converts one valid email address into a canonical form and reports the changes made.

In plain words
What is it for?
Use it to standardize email addresses, separate their local and domain parts, and inspect transformations such as lowercasing or removing provider-specific tags.
Why use it?
Different spellings of the same address can create duplicate records or inconsistent lookups; normalization gives them one consistent representation.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the requiems-api-skills plugin — 127 skills shipped together

Good fit Use it to standardize email addresses, separate their local and domain parts, and inspect transformations such as lowercasing or removing provider-specific tags.

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Install with agentmods
npx agentmods add skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize
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 bobadilla-tech/requiems-api-skills --skill email-normalize-post-normalize
Clone the repo
git clone --depth 1 https://github.com/bobadilla-tech/requiems-api-skills

Made for: Claude Code.

Or install requiems-api-skills, the plugin that ships this one along with the rest of its 127 skills.

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 email-normalize-post-normalize

README.md
[![agentmods](https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize/github.svg)](https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize)
Your own site
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize/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 email-normalize-post-normalize

Your own site · 80×15
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/email-normalize-post-normalize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 497 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00027 $0.00497
Opus 5 $0.00014 $0.00249
Sonnet 5 $0.00005 $0.00099
Haiku 4.5 $0.00003 $0.00050

Measured 8d ago against content hash c84f2c63f847, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

email-normalize-post-normalize 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 8d 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.

skills/email-normalize-post-normalize/SKILL.md · 69 lines

What it actually says

Endpoint

POST https://requiems.xyz/v1/text/normalize

Normalize Email

Normalizes a single email address and returns the canonical form together with a breakdown of all transformations applied.

Parameters

Name Type Required Location Description
email string yes body The email address to normalize. Must be a syntactically valid address.

Request Example

{
  "email": "[email protected]"
}

Response Example

{
  "data": {
    "original": "[email protected]",
    "normalized": "[email protected]",
    "local": "testuser",
    "domain": "gmail.com",
    "changes": [
      "lowercased",
      "removed_dots",
      "removed_plus_tag",
      "canonicalised_domain"
    ]
  },
  "metadata": {
    "timestamp": "2026-01-01T00:00:00Z"
  }
}

Response Fields

Field Type Description
original string The email address exactly as supplied in the request body
normalized string The canonical form of the address after all transformations
local string The local part (before @) of the normalized address
domain string The domain part (after @) of the normalized address
changes array Ordered list of transformations applied. Possible values: lowercased, trimmed_whitespace, removed_dots, removed_plus_tag, canonicalised_domain. Empty array when no changes were needed.

Errors

  • 422 validation_failed — The email field is missing or not a valid email address format.
  • 400 bad_request — The request body is missing, not valid JSON, or contains unknown fields.
  • 500 internal_error — Unexpected server error.
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. 8d ago First seen · 69 lines · 27 tokens per session scan A c84f2c63f847

Subscribe to this mod's changes

email-normalize-post-normalize is a skill published in the GitHub repository bobadilla-tech/requiems-api-skills (2 stars, last pushed yesterday), licensed MIT. It adds 27 tokens to every session and 497 once invoked, about $0.0001 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.