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

> 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.

Canonical page: https://www.zero.xyz/use-cases/token-analysis
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.

## Ranked services

| # | Service | Host | Price | Rail | Live | Calls 30d | Reviews |
|---|---|---|---|---|---|---|---|
| 1 | [Count Tokens in Messages (LLM API)](https://www.zero.xyz/c/agents-llmapi-ai-count-tokens-in-messages-llm-api-ac2ad1d9/llms.txt) | agents.llmapi.ai | not listed | MPP | yes (Oct 30, 2026) | 1 | 1 · 5.0/5 |
| 2 | [agentsvc.io Token Verdict](https://www.zero.xyz/c/agentsvc-io-token-verdict-ec2957cc/llms.txt) | agentsvc.io | $0.009 | x402 | yes (Oct 30, 2026) | 1 | — |
| 3 | [AgentSvc Token Security Checker](https://www.zero.xyz/c/agentsvc-token-security-checker-fb82ad26/llms.txt) | agentsvc.io | $0.009 | x402 | yes (Oct 30, 2026) | 1 | — |
| 4 | [agentsvc.io ERC20 Token Info Lookup](https://www.zero.xyz/c/agentsvc-io-erc20-token-info-lookup-83c7c8c7/llms.txt) | agentsvc.io | $0.0045 | x402 | yes (Oct 30, 2026) | 1 | — |
| 5 | [AI Token Verdict Rug Check](https://www.zero.xyz/c/ai-token-verdict-rug-check-e6276a9a/llms.txt) | agentsvc.io | $0.015 | x402 | yes (Oct 30, 2026) | 1 | — |
| 6 | [Honeypot Check Before Trade](https://www.zero.xyz/c/honeypot-check-before-trade-7ea33efa/llms.txt) | agentsvc.io | $0.004 | x402 | yes (Oct 30, 2026) | 1 | — |
| 7 | [agent402.tools Text Statistics Analyzer](https://www.zero.xyz/c/agent402-tools-text-statistics-analyzer-0bf811bb/llms.txt) | agent402.tools | $0.001 | x402 | yes (Oct 30, 2026) | 0 | 1 · 4.7/5 |
| 8 | [Token Count / Tokenizer Estimator (cl100k_base, o200k_base, Claude, Gemini)](https://www.zero.xyz/c/x402-deployer-x402-deployer-workers-dev-cc1be628/llms.txt) | x402-deployer.x402-deployer.workers.dev | $0.001 | x402 | yes (Oct 30, 2026) | 0 | — |
| 9 | [Token Counter by utilsforagents.com](https://www.zero.xyz/c/utilsforagents-com-44c1f37d/llms.txt) | utilsforagents.com | $0.003 | x402 | yes (Oct 27, 2026) | 0 | — |
| 10 | [Token Security Check (GoPlus, 30+ Chains)](https://www.zero.xyz/c/api-strale-io-98bba408/llms.txt) | api.strale.io | $0.022 | x402 | yes (Oct 30, 2026) | 0 | — |

## 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.

## Related use cases

- [token price APIs](https://www.zero.xyz/use-cases/token-price/llms.txt)
- [text embeddings APIs](https://www.zero.xyz/use-cases/text-embeddings/llms.txt)
- [sentiment analysis APIs](https://www.zero.xyz/use-cases/sentiment-analysis/llms.txt)
- [APIs to translate text](https://www.zero.xyz/use-cases/translate-text/llms.txt)

- [All use cases](https://www.zero.xyz/use-cases)
- [Zero catalog index](https://www.zero.xyz/llms.txt)