Base64 Decoder

Overview

You pass a Base64 string (inline or via file reference); we decode it per RFC 4648 with alphabet validation and a bounded decoded-byte ceiling. Return decoded text (UTF-8 or your chosen encoding) or re-encoded standard Base64 for binary-safe transport. Do not use this to encode data or decrypt ciphertext. Accepts file input via file_ref — no need to extract file content first.

You meet Base64 everywhere — API responses, embedded certificates, config values — and decoding it by hand invites alphabet and padding mistakes. We decode it with a size ceiling so a huge payload cannot exhaust memory.

When to use it

Scope

Non-goals

• Does not encode data (use platform.base64_encode)
• Does not decrypt or verify signatures
• Does not handle streaming or chunked decoding

Properties

Capabilities

Cost & billing

Flat rate per invocation

File handling

File limits

Constraints this skill applies to your input and generated files. The “Limited by” column shows the static source of each cap; none of these can be raised by upgrading your plan.

How we handle your data

Input schema

Output schema

API contract

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"platform.base64_decode","input":{"encoded":"SGVsbG8sIFdvcmxkIQ==","outputFormat":"text"}}'

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("platform.base64_decode", {"encoded":"SGVsbG8sIFdvcmxkIQ==","outputFormat":"text"});

Errors

Other limits

Limitations

• Does not encode data (use platform.base64_encode)
• Does not decrypt or verify signatures
• Does not handle streaming or chunked decoding
• Encoding data to Base64
• Processing encrypted data
• Decoding very large blobs beyond the size limit

How to call

POST /v1/execute (requires authentication)

{
  "skillKey": "platform.base64_decode",
  "input": {
    "encoded": "SGVsbG8sIFdvcmxkIQ==",
    "outputFormat": "text"
  }
}

Examples

{
  "encoded": "SGVsbG8sIFdvcmxkIQ==",
  "outputFormat": "text"
}

{
  "alphabet": "base64",
  "decodedBytes": 13,
  "textEncoding": "UTF-8",
  "text": "Hello, World!",
  "outputFormat": "text"
}

{
  "encoded": "aGVsbG8=",
  "outputFormat": "base64"
}

{
  "decodedBytes": 5,
  "outputFormat": "base64",
  "dataBase64": "aGVsbG8=",
  "alphabet": "base64"
}

Recommended use cases

• Decode Base64 payloads received from APIs
• Extract text from Base64-encoded content
• Validate Base64 integrity before processing
• Convert Base64-encoded configuration values to plaintext

Avoid for

• Encoding data to Base64
• Processing encrypted data
• Decoding very large blobs beyond the size limit

Related skills

Composable with

Safety & privacy

• Runs without calling any external service.
• Your payloads are never stored permanently.
• Telemetry captures metadata only — never your payload contents.
• We never train models on your payloads.
• No human reviews your payloads.

Tags