{"uid":"cap_3JqhlHhvUysEOVyv4srKG","slug":"trollbridge-prompt-cost-estimator-39201a50","name":"TrollBridge Prompt Cost Estimator","description":"The insurance booth for AI agents, with Mini's Agent Supply Store on the side of the road. One hundred checkpoints: pre-transaction safety lanes (honeypot, approval-risk, rug-score, receipt-check, tx-dryrun, permit-scan, airdrop-verdict, deployer-history, wallet-watch, secret-scan at $0.02 USDC per call; the protection tier — /contract-check, /approval-screen, /tx-plain-english, /honeypot-check, /tx-simulate, /redteam, /skill-scan, /verdict, /egress-audit, /tool-gate, /airlock, /repo-scan, /prove, /task-scope — at $0.10; the one-call /shield don't-get-rugged screen at $0.25; the full /preflight bundle at $0.05), bounty intel (bounties, fresh, verdicts, deadlines, sweepstakes, opportunities) at $0.02 USDC per call, trader intel (/prices and /quant at $0.02; /enrich and /token-check at $0.05; /contract-check and /honeypot-check at $0.10; /sec-facts at $0.05), market intel (/markets and /search at $0.05; /grants at $0.02), DeFi intel (/yields and /new-pairs at $0.05; /gas and /defi at $0.02), AI intel (/models at $0.02), agent-ops intel (/prompt-cost, /model-picks, /rpc-speed, /terms-tldr, /scrape, /gigs, /retry-verify, /idempotency, /verify-independent at $0.02; /site-watch, /wallet-check, /code-run, /regulatory-pack, /sage, /cron-watch, /caveat-check, /tripwire, /escrow, /trust, /bridge-fees, /dao-votes, /dev-activity, /dex-arb, /dydx-perps, /funding-rates, /gas-predict, /hack-tracker, /long-short-ratio, /lp-yields, /mev-scan, /open-interest, /perp-basis, /polymarket-odds, /rwa-watch, /sentiment, /stablecoin-flows, /tokenomics, /top-movers, /whale-watch, and /yield-stable at $0.05; /approval-screen, /tx-plain-english, /tx-simulate, and /task-scope at $0.10; /scam-scan deep scan at $5.00 or 30-day subscription at $30.00), supply store (/road-pack combo meal at $0.05; curated datasets, the /audit-prep pre-audit review, and the /prove-state symbolic-execution run at $1.00; the /audit AI-agent audit at $25.00). Every lane answers before money moves — heuristic verdicts, not audits. Don't get rugged.","url":"https://mini-tollbooth.onrender.com/prompt-cost?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["text"],"properties":{"text":{"type":"string","description":"The prompt to estimate token cost for (max 50,000 chars)."},"model":{"type":"string","description":"Optional model id (substring match) — cost for just that model."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"lane":"/prompt-cost","cheapest":{"id":"openai/gpt-4o-mini","est_cost_usd":0.0000042},"description":"Prompt cost estimator — paste a prompt, get a heuristic token estimate and what it would cost across every model in the /models catalog, cheapest first. Heuristic estimate, not an exact tokenizer count.","estimated_tokens":28}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-Gh75c8ZZZhwzj7XHdyKS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates the token count and USD cost of a given prompt across all supported AI models, returning a cheapest-first ranked list","exampleAgentPrompt":"Estimate how many tokens this system prompt is and what it would cost across every model — just paste the text: 'You are a helpful assistant that answers questions about crypto security and DeFi protocols. Always be concise and cite sources when possible.'","exampleUseCases":[{"title":"Pre-flight prompt cost check","prompt":"Before I send this 3,000-word research document as context to an LLM, can you estimate how many tokens it is and what it would cost across all models? I want to pick the cheapest one that still does a good job."},{"title":"Budget optimization for agent system prompts","prompt":"I'm designing a system prompt for my AI agent and I need to know how much it'll cost per call on GPT-4o-mini specifically — here's the prompt text: 'You are a financial compliance assistant. Your job is to review transaction descriptions and flag any that look suspicious based on regulatory guidelines.'"},{"title":"Model selection for cost-sensitive pipeline","prompt":"Compare the inference cost for this prompt across all available models so I can decide which one fits our $50/month budget: 'Summarize the following news article in three bullet points and assign a sentiment score from -1 to 1.'"}],"resultDescription":"Returns estimated token count for the prompt (heuristic, not exact tokenizer), plus a list of models from the /models catalog sorted cheapest-first with estimated USD cost per call. If a model filter is supplied, returns cost only for that model.","failureModes":["Prompt text exceeds 50,000 character limit — request rejected","Missing required 'text' query parameter — validation error","Model substring provided but no matching model found — may return empty or full list","Heuristic token estimate may diverge from actual tokenizer counts for models with unusual tokenization","Service unavailable on Render free tier during cold start — slow or timeout response","Payment not attached or insufficient USDC — 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a quick, cross-model cost comparison before committing to an LLM API call — especially useful for long prompts, budget-constrained agent pipelines, or when selecting the cheapest viable model for a given task. Prefer this over manually querying each model's pricing page when you want a unified, ranked view. Not suitable when you need exact token counts from the model's native tokenizer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:47:38.862Z","isFirstParty":false,"canonicalSlug":"trollbridge-prompt-cost-estimator-39201a50"}