email-validate-post-batch

email-validate-post-batch is a skill for Claude Code from bobadilla-tech/requiems-api-skills. It costs 0 tokens per session (727 once invoked), scanned A, original, MIT.

A batch email validator that checks up to 50 addresses for formatting, whether their domains can receive mail, disposable use, normalization, and likely typing mistakes.

In plain words
What is it for?
Use it to clean sign-up lists, find undeliverable addresses, identify temporary emails, and suggest corrections for typos.
Why use it?
It gives a separate result for every address, so one invalid email does not stop the rest from being checked.

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 clean sign-up lists, find undeliverable addresses, identify temporary emails, and suggest corrections for typos.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bobadilla-tech/requiems-api-skills/email-validate-post-batch
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-validate-post-batch
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-validate-post-batch

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/email-validate-post-batch"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/email-validate-post-batch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 727 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 $0.00000 $0.00727
Opus 5 $0.00000 $0.00364
Sonnet 5 $0.00000 $0.00145
Haiku 4.5 $0.00000 $0.00073

Measured 9d ago against content hash fbfcebdb5ad1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

email-validate-post-batch 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 9d 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-validate-post-batch/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Endpoint

POST https://requiems.xyz/v1/validation/email/batch

Validate Emails (Batch)

Validates up to 50 email addresses in a single request. Each email is processed independently and returns a full validation breakdown (syntax, MX record, disposable check, normalization, and typo suggestion). Invalid emails do not fail the request. Billing: 1 credit per email.

Parameters

Name Type Required Location Description
emails array yes body Array of email addresses to validate. Min: 1, Max: 50.

Request Example

{
  "emails": ["[email protected]", "[email protected]"]
}

Response Example

{
  "data": {
    "results": [
      {
        "email": "[email protected]",
        "valid": true,
        "syntax_valid": true,
        "mx_valid": true,
        "disposable": false,
        "normalized": "[email protected]",
        "domain": "gmail.com",
        "suggestion": null
      },
      {
        "email": "[email protected]",
        "valid": false,
        "syntax_valid": true,
        "mx_valid": false,
        "disposable": false,
        "normalized": "[email protected]",
        "domain": "gmial.com",
        "suggestion": "gmail.com"
      }
    ],
    "total": 2
  },
  "metadata": {
    "timestamp": "2026-01-01T00:00:00Z"
  }
}

Response Fields

Field Type Description
results array List of validation results for each email, preserving input order
results[].email string Original email input (null if invalid syntax)
results[].valid boolean Overall validity (syntax + MX record)
results[].syntax_valid boolean Whether the email is syntactically valid (RFC 5322)
results[].mx_valid boolean Whether the domain has valid MX records
results[].disposable boolean Whether the email comes from a disposable domain
results[].normalized string Canonical normalized email (lowercase, alias handling, etc.)
results[].domain string Extracted domain from email address
results[].suggestion string Suggested correction for common domain typos
total integer Number of emails processed in the batch

Read the full file on GitHub · 87 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. 9d ago First seen · 87 lines · 0 tokens per session scan A fbfcebdb5ad1

Subscribe to this mod's changes

email-validate-post-batch is a skill published in the GitHub repository bobadilla-tech/requiems-api-skills (2 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 727 tokens. 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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