Head to head · Guard injection · October 2026 research run

LlamaFirewall vs Prisma AIRS AI Runtime Security API

Prisma AIRS AI Runtime Security API scores 62.8 (B) on agent readiness against LlamaFirewall's 50.8 (D), and leads in 6 of 7 scored categories. LlamaFirewall leads on payments & pricing. Both do guard injection.

LlamaFirewallMeta · Agent framework D50.8/100#682 of 841 Prisma AIRS AI Runtime Security APIPalo Alto Networks, Inc. · HTTP API B62.8/100#379 of 841

Which one, for what

LlamaFirewall D

Good for A Python agent team that wants injection, hidden-character and generated-code checks in process, is willing to pin dependencies or install from main, and can get the gated weights.

Ahead on

Payments & pricing, 50 against 0

Also in its favour

No key needed to call it
Open source

Watch for

No PyPI release since 1.0.3 on 29 May 2025, and no changelog, tags or deprecation notes were found

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 53
Schema & documentation, 68 against 49
Agent ergonomics, 65 against 60
Security & auth, 85 against 56
Maintenance & community, 31 against 15
Transparency & trust, 71 against 58

Also in its favour

A hosted endpoint, with nothing to install

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 this run	LlamaFirewall	Prisma AIRS AI Runtime Security API	Edge
Reliability	16%20	53	87	Prisma AIRS AI Runtime Security API +34
Performance	10%pending	pending	pending	not scored in this run
Schema & documentation	13%16.2	49	68	Prisma AIRS AI Runtime Security API +19
Agent ergonomics	13%16.2	60	65	Prisma AIRS AI Runtime Security API +5
Security & auth	14%17.5	56	85	Prisma AIRS AI Runtime Security API +29
Payments & pricing	10%12.5	50	0	LlamaFirewall +50
Task success	10%pending	pending	pending	not scored in this run
Maintenance & community	7%8.8	15	31	Prisma AIRS AI Runtime Security API +16
Transparency & trust	7%8.8	58	71	Prisma AIRS AI Runtime Security API +13
Negative events	≤15	0	0
Total		50.8 · D	62.8 · B

Facts side by side

Fact	LlamaFirewall	Prisma AIRS AI Runtime Security API
Kind	Agent framework	HTTP API
Vendor	Meta	Palo Alto Networks, Inc.
Hosted endpoint	no (local only)	`https://service.api.aisecurity.paloaltonetworks.com/v1/scan/sync/request`
Transports		HTTP
Auth	None	OAuth or key
Pricing	Free	Paid
x402	no	no
Licence	MIT (library). The Prompt Guard 2 weights it downloads are under the Llama 4 Community Licence	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	2025-05-29	2026-05-15
Terms last updated	no document linked
Privacy policy last updated	no document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity	4.4k stars, 1k PyPI/wk	10 stars, 999 PyPI/wk

Verdicts

LlamaFirewall

One scan() call runs several checks on the owner's machine and returns a short typed result. The last PyPI release is 1.0.3 from 29 May 2025, and its Prompt Guard loader imports a huggingface_hub class that current versions no longer export, so a fresh install needs older pins. The classifier weights also need Meta's manual approval.

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

LlamaFirewall

Pin huggingface_hub below 1.0 and a matching transformers 4.x before importing the Prompt Guard scanner from the 1.0.3 wheel, or install from main
Get access to meta-llama/Llama-Prompt-Guard-2-86M and set a Hugging Face token first. Without one the loader prompts for a login and a headless run stalls
Call scan_async inside a running event loop. scan() wraps asyncio.run and fails there. scan_async returns score 0.0 and reason default on every allow
Split text longer than 512 tokens yourself before a Prompt Guard scan. The library truncates and does not chunk
Do not feed a block reason back to the model. The Prompt Guard reason quotes the full scanned text, and the hidden ASCII reason decodes the hidden payload

Prisma AIRS AI Runtime Security API

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
Put earlier turns first in contents. Only the last element is scanned, and the rest is context
Read action (allow or block) and category, then check timeout and error, because a detector that failed is reported in errors with a 200
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
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, LlamaFirewall or Prisma AIRS AI Runtime Security API?

Prisma AIRS AI Runtime Security API scores 62.8 (B) on agent readiness against LlamaFirewall's 50.8 (D), and leads in 6 of 7 scored categories. LlamaFirewall leads on payments & pricing.

Can an agent call LlamaFirewall and Prisma AIRS AI Runtime Security API without installing anything?

No hosted endpoint is listed for LlamaFirewall. Prisma AIRS AI Runtime Security API has a hosted endpoint at https://service.api.aisecurity.paloaltonetworks.com/v1/scan/sync/request.

Are LlamaFirewall and Prisma AIRS AI Runtime Security API open source?

LlamaFirewall is open source (MIT (library). The Prompt Guard 2 weights it downloads are under the Llama 4 Community Licence). No open-source release is listed for Prisma AIRS AI Runtime Security API.

Other comparisons with LlamaFirewall or Prisma AIRS AI Runtime Security API

Machine-readable

This page as Markdown /compare/llamafirewall-vs-prisma-airs.md · slim .min.md · JSON .json (or send Accept: text/markdown)
Each listing in full /api/v1/tools/llamafirewall.json · /api/v1/tools/prisma-airs.json
From a terminal anchor compare llamafirewall prisma-airs (the CLI)
Over MCP compare_tools {"a": "llamafirewall", "b": "prisma-airs"} at /mcp, no key

Which one, for what

Score by category

Facts side by side

Verdicts

LlamaFirewall

Prisma AIRS AI Runtime Security API

Before you call either

LlamaFirewall

Prisma AIRS AI Runtime Security API

Questions

Which is better for AI agents, LlamaFirewall or Prisma AIRS AI Runtime Security API?

Can an agent call LlamaFirewall and Prisma AIRS AI Runtime Security API without installing anything?

Are LlamaFirewall and Prisma AIRS AI Runtime Security API open source?

Other comparisons with LlamaFirewall or Prisma AIRS AI Runtime Security API

Machine-readable

Do agents find, use and choose your tools?