# Azure AI Content Safety (Prompt Shields) vs Prisma AIRS AI Runtime Security API

> Prisma AIRS AI Runtime Security API scores 62.8 (B) on agent readiness against Azure AI Content Safety (Prompt Shields)'s 60.7 (C), and leads in 2 of 7 scored categories. Azure AI Content Safety (Prompt Shields) leads on agent ergonomics, payments & pricing, maintenance &…

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- Updated: 2026-10-09

Prisma AIRS AI Runtime Security API scores 62.8 (B) on agent readiness against Azure AI Content Safety (Prompt Shields)'s 60.7 (C), and leads in 2 of 7 scored categories. Azure AI Content Safety (Prompt Shields) leads on agent ergonomics, payments & pricing, maintenance & community and transparency & trust. Both do guard injection.

- Azure AI Content Safety (Prompt Shields): grade C, 60.7/100, rank #449 of 842. Markdown https://www.anchorterminal.com/tools/azure-ai-content-safety.md · JSON https://www.anchorterminal.com/api/v1/tools/azure-ai-content-safety.json
- Prisma AIRS AI Runtime Security API: grade B, 62.8/100, rank #379 of 842. Markdown https://www.anchorterminal.com/tools/prisma-airs.md · JSON https://www.anchorterminal.com/api/v1/tools/prisma-airs.json

## Which one, for what

### Azure AI Content Safety (Prompt Shields) (C)

Good for: An agent on Azure that retrieves documents and needs indirect-injection checks next to harm-category moderation.

Ahead on:
- Agent ergonomics, 78 against 65
- Payments & pricing, 15 against 0
- Maintenance & community, 45 against 31
- Transparency & trust, 80 against 71

Watch for: Needs an Azure subscription with a card, a resource and a region that has the feature, before the first call

### Prisma AIRS AI Runtime Security API (B)

Good for: A company already buying Palo Alto Networks through Strata Cloud Manager that wants prompt, response and MCP tool scanning with DLP and URL filtering from the same vendor.

Ahead on:
- Reliability, 87 against 55
- Security & auth, 85 against 74

Watch for: No public price, free tier or trial. Capacity is bought as Software NGFW credits, in steps of 1 billion tokens a month, through sales


## Score by category

| Category | Weight | Azure AI Content Safety (Prompt Shields) | Prisma AIRS AI Runtime Security API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 87 | Prisma AIRS AI Runtime Security API +32 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 69 | 68 | Azure AI Content Safety (Prompt Shields) +1 |
| Agent ergonomics | 13% (16.2 this run) | 78 | 65 | Azure AI Content Safety (Prompt Shields) +13 |
| Security & auth | 14% (17.5 this run) | 74 | 85 | Prisma AIRS AI Runtime Security API +11 |
| Payments & pricing | 10% (12.5 this run) | 15 | 0 | Azure AI Content Safety (Prompt Shields) +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 45 | 31 | Azure AI Content Safety (Prompt Shields) +14 |
| Transparency & trust | 7% (8.8 this run) | 80 | 71 | Azure AI Content Safety (Prompt Shields) +9 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **60.7 · C** | **62.8 · B** | |

## Facts side by side

| Fact | Azure AI Content Safety (Prompt Shields) | Prisma AIRS AI Runtime Security API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Microsoft Azure | Palo Alto Networks, Inc. |
| Hosted endpoint | `https://{resource}.cognitiveservices.azure.com/contentsafety/text:shieldPrompt` | `https://service.api.aisecurity.paloaltonetworks.com/v1/scan/sync/request` |
| Transports | HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | none | Proprietary service under the Palo Alto Networks end user licence agreement. The Python SDK is under the PolyForm Internal Use licence 1.0.0, which is not an OSI licence |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-09-01 | 2026-05-15 |
| Terms last updated | couldn't be read |  |
| Privacy policy last updated | 2026-09-01 |  |
| Customer content may train models | yes |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 17k npm/wk, 218k PyPI/wk | 10 stars, 999 PyPI/wk |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Azure AI Content Safety (Prompt Shields).** Prompt Shields checks up to five retrieved documents for indirect injection, not only the user prompt. Needs an Azure subscription with a card, a resource and a region that has the feature, before the first call.

**Prisma AIRS AI Runtime Security API.** A public OpenAPI document, ten detection types in one call, tool-call scanning, a remote MCP server, rotating API keys and OAuth roles suit teams already on Strata Cloud Manager. Access needs Software NGFW credits bought through sales, with no public price, trial or self-serve signup, and payloads flagged malicious are kept for up to 10 years.

## Before you call either

### Azure AI Content Safety (Prompt Shields)

1. Send retrieved pages and tool results in the documents array of shieldPrompt, not in userPrompt, so document attacks are reported separately
2. Call text:shieldPrompt over REST with api-version=2024-09-01. The Python SDK 1.0.0 has no method for it
3. Keep each request under 10,000 characters across prompt and documents, and split long tool results
4. Create the resource in a region that lists Prompt Shields, since not every region has it
5. On F0 you get 5 requests a second. Queue checks or move to S0 before load testing

### Prisma AIRS AI Runtime Security API

1. Send `x-pan-token` and an `ai_profile` with `profile_name` or `profile_id` on every scan. Both come from Strata Cloud Manager, and a key works only in its own region
2. Put earlier turns first in `contents`. Only the last element is scanned, and the rest is context
3. Read `action` (allow or block) and `category`, then check `timeout` and `error`, because a detector that failed is reported in `errors` with a 200
4. Keep synchronous requests under 2 MB and asynchronous ones under 5 MB and 25 items, and fetch at most 5 scan or report IDs a call, 10 calls a minute
5. For MCP, connect to `/mcp` on the regional host with `x-pan-token` and `x-pan-profile` headers, and call `pan_inline_scan` yourself before and after generation

## Questions

### Which is better for AI agents, Azure AI Content Safety (Prompt Shields) or Prisma AIRS AI Runtime Security API?

Prisma AIRS AI Runtime Security API scores 62.8 (B) on agent readiness against Azure AI Content Safety (Prompt Shields)'s 60.7 (C), and leads in 2 of 7 scored categories. Azure AI Content Safety (Prompt Shields) leads on agent ergonomics, payments & pricing, maintenance & community and transparency & trust.

### Do Azure AI Content Safety (Prompt Shields) and Prisma AIRS AI Runtime Security API need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Azure AI Content Safety (Prompt Shields) and Prisma AIRS AI Runtime Security API without installing anything?

Yes. Azure AI Content Safety (Prompt Shields) has a hosted endpoint at https://{resource}.cognitiveservices.azure.com/contentsafety/text:shieldPrompt and Prisma AIRS AI Runtime Security API at https://service.api.aisecurity.paloaltonetworks.com/v1/scan/sync/request.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/azure-ai-content-safety-vs-prisma-airs.json, and with the fewest tokens: https://www.anchorterminal.com/compare/azure-ai-content-safety-vs-prisma-airs.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "azure-ai-content-safety", "b": "prisma-airs"}`. From a terminal: `anchor compare azure-ai-content-safety prisma-airs`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/azure-ai-content-safety.json and https://www.anchorterminal.com/api/v1/tools/prisma-airs.json

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