{"uid":"cap_R_Q_-9IJkaA6KQPZcfMdj","slug":"token-count-api-a7416037","name":"Token Count API","description":"Pure computation endpoints paid per call via x402 ($0.001 USDC on Base).","url":"https://compute-api-production-245d.up.railway.app/token-count?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string"},"model":{"type":"string","description":"Accepted for compatibility; the estimate is model-independent"}}},"responseSchema":{"type":"object","properties":{"chars":{"type":"integer"},"words":{"type":"integer"},"tokens":{"type":"integer"}}},"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_ZeIcR-JRw4clOLnTGi287","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":"Estimates the character count, word count, and token count for a given text string","exampleAgentPrompt":"How many tokens, words, and characters are in this text: 'The quick brown fox jumps over the lazy dog. This is a sample sentence for estimation purposes.'?","exampleUseCases":[{"title":"Pre-flight LLM prompt sizing","prompt":"Before I send this system prompt to GPT, can you count how many tokens it uses so I know if it fits within 4096 tokens? Here's the text: 'You are a helpful assistant specialized in customer support for e-commerce platforms. Always be polite, concise, and escalate unresolved issues to a human agent.'"},{"title":"Document chunking for RAG pipeline","prompt":"I need to split this article into chunks under 512 tokens each — can you count the tokens in this paragraph first so I know how to size the splits? The paragraph is: 'Retrieval-augmented generation is a technique that combines large language models with external knowledge bases to produce more accurate and up-to-date responses.'"},{"title":"Cost estimation before batch LLM job","prompt":"I'm about to run 1000 rows of customer feedback through an LLM and want to estimate the token cost — can you count the tokens in this sample review: 'The product arrived two days late and the packaging was damaged, but the item itself works perfectly and customer service was very responsive.'"}],"resultDescription":"Returns a JSON object with three integer fields: chars (total character count), words (total word count), and tokens (estimated token count) for the submitted text. The token estimate is model-independent.","failureModes":["Missing required 'text' field returns a validation error","Extremely long texts may time out or hit payload size limits","Token estimate is model-independent and approximate — may differ slightly from model-specific tokenizers like tiktoken","Payment failure via x402 prevents the call from being processed"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap, model-agnostic token estimate without calling a full LLM API. Ideal for pre-flight checks before expensive LLM calls, document chunking logic, or validating that text fits within a context window. Prefer this over tiktoken or similar libraries when you need a hosted, pay-per-call service that integrates into an automated pipeline via x402 payments on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:31:37.611Z","isFirstParty":false,"canonicalSlug":"token-count-api-a7416037"}