# PromptArmor

**Canonical:** https://apis.io/providers/prompt-armor/  
**Website:** https://www.promptarmor.com/  
**APIs profiled:** 2

PromptArmor (YC W24) is an LLM application security platform that detects and blocks enterprise-grade threats - indirect prompt injection, data exfiltration, phishing, and system manipulation - in production AI applications. A real-time detection API analyzes LLM inputs and outputs against a continuously updated set of threat detectors before a completion is acted on, returning a fast verdict (for example containsInjection) so applications can block or allow content.

## Kin Score — 32.7 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 32.7).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 55.8 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| 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 |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (2)

- **PromptArmor Analyze API** — Analyze LLM input and output through the detector engine.
- **PromptArmor Content Check API** — Single-call content verdict against the detection engine.

## Agentic access (1)

- **Prompt Armor Agentic Access** — 3 operations · 3 acting

## Security (3)

- **Prompt Armor Authentication** — apiKey · 1 scheme
- **Prompt Armor Domain Security** — TLSv1.3 · HSTS · DMARC
- **Prompt Armor Vulnerability Disclosure** — disclosure policy published

## Plans (1)

- **Prompt Armor Plans Pricing**

## Tags

Artificial Intelligence, LLM, Security, Prompt Injection, Threat Detection

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