ToolVet

Classic Ciphers and Encodings

10 x402 APIs served from text-ciphers.x402tookit.com

Every listing from Classic Ciphers and Encodings that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
10 x402 APIs
Passing at the latest check
8 of 10
Uptime, 30 days
63.9% on average across 10 listings
Price
$0.02 per call
Trust score
32 to 63, median 61
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 10 listings

Ranked by trust score.

  • 63trust
    Rail FenceClassic Ciphers and Encodings

    Rail fence (zigzag) transposition cipher encode or decode with 2 to 20 rails; letters and digits only by default.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 546 msPassing, checked 10 h ago
  • 63trust
    PlayfairClassic Ciphers and Encodings

    Playfair cipher encode or decode with a keyword; shows the 5x5 square and the digraphs. I and J are merged.

    x402 APIOther
    $0.02per call on Polygon
    68.4% uptime, 545 msPassing, checked 5 h ago
  • 63trust
    Encode TextClassic Ciphers and Encodings

    Convert text or bytes to and from binary, octal, hex, decimal, Base32 (RFC 4648), Base58 (Bitcoin) and Base64.

    x402 APIDeveloper tools
    $0.02per call on Polygon
    70.0% uptime, 515 msPassing, checked 4 h ago
  • 63trust
    BrailleClassic Ciphers and Encodings

    Grade 1 Braille text to Unicode Braille cells and back, with number sign, capital sign and dot numbers per cell.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 515 msPassing, checked 9 h ago
  • 61trust
    Number CiphersClassic Ciphers and Encodings

    A1Z26 (A=1) and Polybius square number ciphers, both ways, with optional keyword square and ADFGX labels.

    x402 APIOther
    $0.02per call on Polygon
    62.5% uptime, 517 msPassing, checked 3 h ago
  • 61trust
    NatoClassic Ciphers and Encodings

    Spell text in the NATO phonetic alphabet (Alfa, Bravo, Charlie) or decode NATO words back to letters and digits.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 534 msPassing, checked 4 h ago
  • 61trust
    MorseClassic Ciphers and Encodings

    Morse code encode or decode (ITU-R M.1677) with dot/dash timing in units and milliseconds at a chosen words per minute.

    x402 APIDeveloper tools
    $0.02per call on Polygon
    64.3% uptime, 540 msPassing, checked 3 h ago
  • 61trust
    Frequency AnalysisClassic Ciphers and Encodings

    Letter frequencies, index of coincidence and the most likely Caesar shift of a ciphertext using English statistics.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 506 msPassing, checked 5 h ago
  • 33trust
    Shift CiphersClassic Ciphers and Encodings

    Caesar, ROT13, ROT47, ROT5 and Atbash encode or decode for puzzles and learning. Not secure; keeps case and punctuation.

    x402 APIOther
    $0.02per call on Polygon
    53.9% uptime, 529 msFailing, checked 21 h ago
  • 32trust
    VigenereClassic Ciphers and Encodings

    Vigenere cipher encode or decode with a key, or estimate the key length of a ciphertext by index of coincidence.

    x402 APIOther
    $0.02per call on Polygon
    50.0% uptime, 533 msFailing, checked 19 h ago

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How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.