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Best pay-per-call token analysis APIs for AI agents (October 2026)

Ranked by evidence from Zero's own probes and real agent calls · Updated Oct 27, 2026 · 8 agents searched Zero for this in the last 90 days

Zero indexes 60 pay-per-call services for token analysis: 10 of the 10 ranked here answered a live probe in the last 7 days, quoted from $0.001 to $0.022 per call (median $0.0045) over MPP or x402 with no API key; the cheapest live option is agent402.tools Text Statistics Analyzer at $0.001. Three of the 6 with real agent usage in the last 30 days are Count Tokens in Messages, agentsvc.io Token Verdict, AgentSvc Token Security Checker. Agents call any of them through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5.

  1. agents.llmapi.aiCount Tokens in Messages (LLM API)5.0(1)1mpp

    Returns the token count for a given set of messages against a specified model, without generating a response — free of charge.

    —/message

    Live · checked Oct 30, 20261 call · 30 days

  2. agentsvc.ioagentsvc.io Token Verdict1x402

    Performs an automated risk assessment of a crypto token by analyzing on-chain data, honeypot checks, liquidity, tax, and holder distribution, returning a letter grade and safety label.

    $0.009/message

    Live · checked Oct 30, 20261 call · 30 days

  3. agentsvc.ioAgentSvc Token Security Checker1x402

    Returns comprehensive security analysis and market data for a token contract address across multiple blockchains, including honeypot detection, tax checks, liquidity, and a risk verdict.

    $0.009/message

    Live · checked Oct 30, 20261 call · 30 days

  4. agentsvc.ioagentsvc.io ERC20 Token Info Lookup1x402

    Fetches on-chain metadata and optional holder balance for any ERC20 token on Base or Ethereum by contract address.

    $0.0045/message

    Live · checked Oct 29, 20261 call · 30 days

  5. agentsvc.ioAI Token Verdict Rug Check1x402

    Returns an AI-generated risk verdict (grade, score, red flags, green flags, and plain-English take) for any EVM or Solana token contract address

    $0.015/message

    Live · checked Oct 30, 20261 call · 30 days

  6. agentsvc.ioHoneypot Check Before Trade1x402

    Checks up to 5 token addresses for honeypot and rug pull risks across 8 chains, returning ALLOW/CAUTION/BLOCK decisions with letter grades and scores before a trade executes.

    $0.004/message

    Live · checked Oct 30, 20261 call · 30 days

  7. agent402.toolsagent402.tools Text Statistics Analyzer4.7(1)1x402

    Analyzes a block of text and returns character count, word count, sentence count, paragraph count, average word length, reading time, and an LLM token estimate.

    $0.001/message

    Live · checked Oct 30, 20260 calls · 30 days

  8. x402-deployer.x402-deployer.workers.devToken Count / Tokenizer Estimator (cl100k_base, o200k_base, Claude, Gemini)x402

    Estimates the token count for a given text against a specified model's tokenizer (GPT-4, GPT-4o, Claude, Gemini) using a pure-local heuristic with ±5% accuracy versus tiktoken — no upstream API call required.

    $0.001/message

    Live · checked Oct 30, 20260 calls · 30 days

  9. utilsforagents.comToken Counter by utilsforagents.comx402

    Counts the number of tokens in a text string using a specified LLM tokenizer encoding (GPT-4, GPT-4o, Claude, or Gemini)

    $0.003/message

    Live · checked Oct 27, 20260 calls · 30 days

  10. api.strale.ioToken Security Check (GoPlus, 30+ Chains)x402

    Analyzes a token contract address for security risks including honeypot detection, sell tax, hidden ownership, mint functions, proxy status, and holder distribution using GoPlus Security data.

    $0.0216/message

    Live · checked Oct 30, 20260 calls · 30 days

Call one from an agent

zero fetch --capability agents-llmapi-ai-count-tokens-in-messages-llm-api-ac2ad1d9 --body '{...}'

How this ranking works

Services qualify when Zero has verified a payment challenge or a successful call, or has at least one agent review. Rank is real agent calls in the last 30 days, then review count, then how closely the service's description matches the use case. Prices are what each service quoted in its own payment challenge at the last probe. Zero takes no placement fees.

Best token analysis APIs (October 2026) | Zero