bin-lookup-get-{bin}

bin-lookup-get-{bin} is a skill for Claude Code from bobadilla-tech/requiems-api-skills. It costs 21 tokens per session (629 once invoked), scanned A, original, MIT.

A lookup for a card's BIN, the first 6–8 digits of a payment card number that identify its issuing range. It returns details such as the card network, type, issuer, country, and whether the prefix passes a basic check.

In plain words
What is it for?
Use it for payment form checks, card-type detection, issuer or country lookup, and fraud or risk workflows.
Why use it?
It lets payment-related software identify card metadata before processing or routing a transaction.

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 for payment form checks, card-type detection, issuer or country lookup, and fraud or risk workflows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bobadilla-tech/requiems-api-skills/bin-lookup-get-bin
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 bin-lookup-get-bin
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 bin-lookup-get-{bin}

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/bin-lookup-get-bin"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/bin-lookup-get-bin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 629 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 $0.00021 $0.00629
Opus 5 $0.00010 $0.00315
Sonnet 5 $0.00004 $0.00126
Haiku 4.5 $0.00002 $0.00063

Measured 11d ago against content hash 8ce880e849dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

bin-lookup-get-{bin} 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 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.

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/bin-lookup-get-{bin}/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Endpoint

GET https://requiems.xyz/v1/finance/bin/{bin}

BIN Lookup

Returns card metadata for the given 6–8 digit BIN prefix.

Parameters

Name Type Required Location Description
bin string yes path 6–8 digit Bank Identification Number. Dashes and spaces are stripped automatically.

Response Example

{
  "data": {
    "bin": "424242",
    "scheme": "visa",
    "card_type": "credit",
    "card_level": "classic",
    "issuer_name": "Chase",
    "issuer_url": "www.chase.com",
    "issuer_phone": "+18002324000",
    "country_code": "US",
    "country_name": "United States",
    "prepaid": false,
    "luhn_prefix_valid": true,
    "confidence": 0.92
  },
  "metadata": {
    "timestamp": "2026-01-01T00:00:00Z"
  }
}

Response Fields

Field Type Description
bin string The normalised BIN prefix used for the lookup
scheme string Card network: visa, mastercard, amex, discover, jcb, diners, unionpay, maestro, mir, rupay, private_label
card_type string credit, debit, prepaid, or charge
card_level string classic, gold, platinum, infinite, business, signature, or standard
issuer_name string Name of the card-issuing bank
issuer_url string Bank website URL
issuer_phone string Bank customer service phone number
country_code string ISO 3166-1 alpha-2 country code of the issuing bank (e.g. US, GB, DE)
country_name string Full country name of the issuing bank
prepaid boolean Whether the card is a prepaid card
luhn_prefix_valid boolean Whether the BIN prefix (not a full card number) passes the Luhn algorithm check
confidence number Data quality score (0.00–1.00). Multi-source confirmed records score higher.

Errors

  • 400 bad_request — BIN is not 6–8 digits or contains non-digit characters.
  • 404 not_found — BIN prefix not found in the database.
  • 500 internal_error — Unexpected server error.

Read the full file on GitHub · 70 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. 11d ago First seen · 70 lines · 21 tokens per session scan A 8ce880e849dd

Subscribe to this mod's changes

bin-lookup-get-{bin} is a skill published in the GitHub repository bobadilla-tech/requiems-api-skills (2 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 629 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.

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