# Chempirical

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

Chempirical (operated as Nitramine per the submission) publishes free tools for chemists and a free, keyless, read-only JSON API at chempirical.com/api covering compounds (names, formula, SMILES/InChI identifiers, molar mass, density, melting and boiling points, Antoine constants, azeotropes), substructure and similarity search, structure SVGs, reactions with participants and reaction scaling. CORS is open; the docs ask for a few requests per second.

## Kin Score — 26.2 / 100 (thin)

Scored 2026-10-09 under rubric 0.23.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 21.5 |
| Contract Governance | 22.0 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 11.9 |
| Access Clarity | 34.2 |

Regulatory layer — **Government & Public Sector**: 10.8 (matched via tags).

## Agent readiness — 18.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| 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 |

## APIs (1)

- **Chempirical (Nitramine) API** — Chempirical (Nitramine) API as documented publicly: 6 operations. Contract generated from the documentation by API Evangelist (2026-10-09); not the provider's own document.

## Security (1)

- **Chempirical Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Chempirical Plans Pricing**

## Tags

Company, Chemistry, Compounds, Reactions, Science, Open Data, JSON API

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