{"uid":"cap_0NZmjQUr79JgqMhN07vbq","slug":"coco-token-estimator-97b2324e","name":"CoCo Token Estimator","description":"Zach Riehn's lab: an about-me and portfolio, a news desk, The Atelier for AI experiments, Launch Lab for XRP research, and Fracture for games.","url":"https://cocoeatsai.com/area4/agent/tools/token-estimate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"const":"http"},"method":{"enum":["GET"]},"queryParams":{"type":"object","properties":{"text":{"type":"string"},"price_per_million":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type","example"],"properties":{"type":{"const":"json"},"example":{"type":"object","required":["chars"],"properties":{"chars":{"type":"number"}}}}}}},"responseSchema":{"type":"json","example":{"note":"Heuristic (~4 chars/token English); exact counts depend on the model tokenizer.","chars":51,"words":11,"tokens_estimate":15,"cost_estimate_usd":null},"exampleNote":"Computed offline with demonstration inputs; time/random values are illustrative."},"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_oIXs70sHWHERu-wFYBBkn","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 token count and optional cost for a given text string using a heuristic (~4 chars/token) approximation","exampleAgentPrompt":"How many tokens is this text roughly: 'The quick brown fox jumps over the lazy dog near the riverbank at dusk'? And what would it cost at $2.00 per million tokens?","exampleUseCases":[{"title":"Pre-flight prompt token check","prompt":"Before I send this to the model, can you estimate how many tokens this system prompt uses: 'You are a helpful assistant specialized in tax law. Always cite your sources and explain in plain language.'"},{"title":"LLM cost budgeting for a batch job","prompt":"I have a block of text I want to run through GPT-4 at $10 per million tokens — can you estimate the token count and what it'll cost? The text is: 'Artificial intelligence is transforming industries ranging from healthcare to logistics, enabling automation and insight at unprecedented scale.'"},{"title":"Context window fit check","prompt":"Does this paragraph fit comfortably under 100 tokens? 'Our quarterly earnings exceeded analyst expectations driven by strong performance in the cloud division and record subscriber growth in emerging markets.'"}],"resultDescription":"Returns a JSON object with the character count, word count, heuristic token estimate (~4 chars/token for English), and optionally a cost estimate in USD if price_per_million is provided. Includes a note clarifying the heuristic nature of the estimate and that exact counts vary by model tokenizer.","failureModes":["Missing required 'text' query parameter results in incomplete or null estimates","Very non-English or code-heavy text will produce inaccurate estimates due to the fixed 4-chars/token heuristic","cost_estimate_usd returns null if price_per_million is not supplied","Extremely long text strings may hit query parameter length limits","Non-numeric price_per_million values may cause cost_estimate_usd to be null or error"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap heuristic token estimate without calling a full tokenizer library or LLM API. Ideal for pre-flight checks, cost budgeting, or validating prompt length before submitting to a model. Not suitable when exact token counts are required (e.g., when operating near a hard context-window limit) — in those cases prefer model-native tokenizer APIs like tiktoken.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:44:25.066Z","isFirstParty":false,"canonicalSlug":"coco-token-estimator-97b2324e"}