# Prompt Token Counter

**Canonical:** https://apis.io/providers/prompttokencounter/  
**Website:** https://prompttokencounter.com/  
**APIs profiled:** 1

Prompt Token Counter provides an online tool to count tokens for OpenAI models, helping users ensure prompts fit model limits. It offers token counts for various GPT models, professional prompt optimization services, and guidance on token management to control costs and improve prompt efficiency.

## Kin Score — 4.1 / 100 (minimal)

Scored 2026-10-23 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 53.6 |
| Contract Quality | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Energy & Utilities**: 4.6 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | na |

## APIs (1)

- **Prompt Token Counter API** — Provides token counting functionality for OpenAI models via a simple HTTP API.

## Security (1)

- **Prompttokencounter Domain Security** — TLSv1.3 · HSTS

## Tags

Company, Tokenization, OpenAI, PromptTools, Artificial Intelligence, Utility

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/prompttokencounter/). Scores are computed from the provider's own public artifacts under a published rubric.