Observed arrival · 2026-09-26
Context Armor puts a checkpoint in front of LLMs
A prompt-injection screening service that checks text before it reaches an LLM, with a public demo and a documented API.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams building LLM or agent applications
- Worth noticing
- Its OWASP matrix marks input-path detection separately from areas such as sensitive-data disclosure and tool misuse, which it lists as not covered.
Field notes
The documented flow runs deterministic rules before escalating uncertain text to a model, then returns a bounded verdict rather than free-form prose. Its OWASP matrix distinguishes input detection from uncovered areas including sensitive-data disclosure and tool misuse. The site says prompts are forwarded to inference providers and not stored by this service; it names Cloudflare, OpenRouter, and OpenAI/Microsoft as subprocessors.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue