Compare · Prompt Armor

TapPass vs Prompt Armor. An injection shield, or full governance.

Prompt Armor protects against prompt injection and jailbreak attacks. TapPass is end-to-end AI agent governance, where injection defence is one capability of many.

✓Free for one person · No credit card needed

Prompt Armor · Injection shield“Is this a jailbreak?”

Prompt Armor focuses on jailbreak and injection defence, and is effective for that purpose.

jailbreakinjection
TapPass · authority layer“May this agent do this, and can you prove it later?”

Injection defence is one step of many in TapPass, next to PII protection, the record, compliance, tool governance and human oversight, in one pipeline.

allowholdredactblockon the record
01An honest choice

When to choose Prompt Armor. When to choose TapPass.

This comparison is about scope, not quality. Prompt Armor does its job well. The question is which job you need done.

Choose Prompt Armor whenAttacks are your main worry.
  • Jailbreak and injection attacks are what you need to stop.
  • A focused shield in front of the model is enough.
  • You already have a record and data protection elsewhere.
Choose TapPass whenYour CISO needs the whole story.
  • Indirect injection through tool results needs scanning too.
  • You need a record, PII scanning and EU AI Act documentation.
  • Tool permissions, approvals and self-hosting in one layer.
02Side by side

TapPass and Prompt Armor, capability by capability.

CapabilityTapPassPrompt Armor
Prompt injection detectionYes: Multi-layer, indirect and tool resultsYes: Jailbreak and injection shield
Indirect injection through tool resultsYes: Multi-layer tool result scanningPartly: Limited
PII detection and redactionYes: With tokenisationNo: Not available
Data classificationYes: Multi-level classificationNo: Not available
Tamper-evident audit trailYes: Cryptographically chainedNo: Not available
Tool and function call governanceYes: Permissions, zones, scanningNo: Not available
Human approval gatesYes: Configurable workflowsNo: Not available
Behavioural drift detectionYes: Statistical anomaly detectionNo: Not available
Session-scoped taint trackingYes: Cross-request detectionNo: Not available
EU AI Act complianceYes: Art. 9, 12, 13, 14No: Not available
Self-hosted deploymentYes: Docker and HelmNo: Cloud only

Scroll the table sideways to see both products.

YesPartlyNot offered or not the focus

Based on public product information as we understood it when we wrote this page. Products change quickly: if something about Prompt Armor is out of date, tell us and we will correct it.

03The difference

A shield and a layer. One capability, or the whole pipeline.

Prompt ArmorAn injection shield

Prompt Armor focuses on jailbreak and injection defence. Effective for that purpose, and a single capability in a larger governance story.

TapPassComplete governance

TapPass sits between agents and models as a complete governance layer. Injection defence is one step, next to PII, the record, compliance, tool governance and human oversight.

ComplianceWhat is left to build

An injection shield stops attacks. Your CISO still needs a record, PII scanning and EU AI Act documentation. With TapPass, they are included.

04How they work together

Keep the shield. Add the layer that decides.

An injection shield and an authority layer answer different questions. If you already run Prompt Armor, TapPass sits in front of it rather than replacing it.

Your agentsLangChain, CrewAI, MCP clients, your own code
TapPassDecides, holds for a person, records every callauthority layer
Prompt ArmorShields the model from jailbreaksInjection shield
Models and toolsOpenAI, Anthropic, Mistral, MCP servers
All comparisonsDetection APIs, libraries, monitoring and supply chain tools, next to TapPass.
Questions

TapPass and Prompt Armor, in plain answers.

Something else on your mind? Talk to our team.

Do we have to choose between Prompt Armor and TapPass?

No. If you already run Prompt Armor, TapPass sits in front of it rather than replacing it, and adds rules, approvals and a record.

Does TapPass catch indirect injection?

Yes. Tool results are scanned before the agent uses them, and session-scoped taint tracking follows untrusted content across requests.

What else does TapPass do?

It redacts personal data, classifies data and routes it, permissions individual tools, holds risky calls for a person, detects drift and keeps a hash-chained record.

How current is this comparison?

It reflects public product information about Prompt Armor as we understood it when we wrote it. Products change quickly. If something here is out of date, tell us and we will correct it.

AI security is more than injection defence. Govern the whole call.

Connect one agent and see every call TapPass would have held, stopped or routed elsewhere. Nothing is blocked while you learn.

✓ Free for one person✓ No credit cardBacked by Start it @KBCVLAIO✓ EU hosted✓ Built in Belgium✓ Your own model keys✓ Encrypted at rest and in transit✓ DPA on request