{"uid":"cap_zzcIZfonHLWHyBIuTh-Gv","slug":"caesar-cipher-educational-84d49311","name":"Caesar Cipher (Educational)","description":"Caesar shift cipher. Handy for puzzle agents, CTF helpers, or reversible toy encoding—not for secrets. Returns shifted text; educational cipher only, not cryptographic protection. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.","url":"https://api.delx.ai/api/v1/x402/caesar-cipher","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":100000,"description":"Primary text input (max 100k chars). Processed first-party; not retained as a dataset."},"shift":{"type":"integer","description":"Optional Caesar cipher shift amount (integer). Default applied by the handler when omitted."}}},"responseSchema":{"type":"json","example":{"text":"uryyb ntrag jbeyq","shift":13,"schema":"delx/caesar-cipher/v1"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VdigzUR0Sct0252hXzM3w","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Applies a Caesar shift cipher to input text, shifting each alphabetic character by a specified integer amount, for use in puzzles, CTF challenges, or toy encoding scenarios.","exampleAgentPrompt":"Can you Caesar-cipher encode the text 'Hello World' with a shift of 13?","exampleUseCases":[{"title":"CTF challenge cipher decode","prompt":"I found this encoded CTF flag 'Uryyb PGS' — can you decode it using a Caesar cipher with a shift of 13?"},{"title":"Puzzle message encoding","prompt":"Encode the message 'Meet me at the park at noon' using a Caesar cipher with a shift of 5 for a scavenger hunt clue."},{"title":"Educational cipher demonstration","prompt":"Show me how a Caesar cipher works by shifting the text 'The quick brown fox' by 3 positions."}],"resultDescription":"Returns a JSON object containing the shifted/transformed text after applying the Caesar cipher with the specified shift amount to all alphabetic characters in the input.","failureModes":["Text exceeds 100,000 character limit — validation error returned, no charge","Shift value is not an integer — validation error, no charge","Missing required text field — structured validation error, no charge","Network timeout or service unavailability — HTTP 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a quick, deterministic, no-setup Caesar cipher transformation for puzzles, CTF competitions, educational demos, or reversible toy encoding. It requires no API key or subscription, charges only $0.001 USDC per successful call via x402 on Base, and returns first-party JSON. Prefer it over rolling your own cipher logic in an agent when you want a reliable, stateless, pay-per-use text shift operation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T19:02:34.576Z","isFirstParty":false}