barcode-get-base64

barcode-get-base64 is a skill for Claude Code from bobadilla-tech/requiems-api-skills. It costs 28 tokens per session (415 once invoked), scanned A, original, MIT.

An API that turns text or numbers into barcode images and returns the image as base64-encoded PNG data. Base64 is a text format for carrying binary files such as images.

In plain words
What is it for?
Generating Code 128, Code 93, Code 39, EAN-8, or EAN-13 barcodes for use in applications or documents.
Why use it?
It avoids having to create and encode barcode images yourself.

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 Generating Code 128, Code 93, Code 39, EAN-8, or EAN-13 barcodes for use in applications or documents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bobadilla-tech/requiems-api-skills/barcode-get-base64
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 barcode-get-base64
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 barcode-get-base64

README.md
[![agentmods](https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64/github.svg)](https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64)
Your own site
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64/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 barcode-get-base64

Your own site · 80×15
<a href="https://agentmods.dev/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64"><img src="https://agentmods.dev/badge/skills/bobadilla-tech/requiems-api-skills/barcode-get-base64.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 415 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 $0.00028 $0.00415
Opus 5 $0.00014 $0.00208
Sonnet 5 $0.00006 $0.00083
Haiku 4.5 $0.00003 $0.00042

Measured 10d ago against content hash 846cbb17fda3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

barcode-get-base64 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 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.

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/barcode-get-base64/SKILL.md · 54 lines

What it actually says

Endpoint

GET https://requiems.xyz/v1/technology/barcode/base64

Generate Barcode (Base64 JSON)

Returns a JSON envelope containing the barcode as a base64-encoded PNG string, along with its type and dimensions.

Parameters

Name Type Required Location Description
data string yes query The text or numeric string to encode in the barcode
type string yes query Barcode format: code128, code93, code39, ean8, ean13

Response Example

{
  "data": {
    "image": "<base64-encoded PNG data>",
    "type": "code128",
    "width": 300,
    "height": 100
  },
  "metadata": {
    "timestamp": "2026-01-01T00:00:00Z"
  }
}

Response Fields

Field Type Description
image string Base64-encoded PNG image data
type string The barcode format that was used
width integer Width of the generated image in pixels
height integer Height of the generated image in pixels

Errors

  • undefined 400 — Missing or invalid parameters (e.g. data not provided, unsupported type)
  • undefined 422 — Data is invalid for the chosen barcode type (e.g. wrong digit count for EAN-8/EAN-13, non-numeric EAN data)
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 · 54 lines · 28 tokens per session scan A 846cbb17fda3

Subscribe to this mod's changes

barcode-get-base64 is a skill published in the GitHub repository bobadilla-tech/requiems-api-skills (2 stars, last pushed 3d ago), licensed MIT. It adds 28 tokens to every session and 415 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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