# Cisco AI Defense Inspection API vs Guardrails AI

> Cisco AI Defense Inspection API scores 61.3 (C) on agent readiness against Guardrails AI's 49.6 (D), and leads in 5 of 7 scored categories. Guardrails AI leads on payments & pricing. Both do guard injection. Category scores, facts, verdicts and agent notes side by side.

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- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Cisco AI Defense Inspection API scores 61.3 (C) on agent readiness against Guardrails AI's 49.6 (D), and leads in 5 of 7 scored categories. Guardrails AI leads on payments & pricing. Both do guard injection.

- Cisco AI Defense Inspection API: grade C, 61.3/100, rank #429 of 842. Markdown https://www.anchorterminal.com/tools/cisco-ai-defense-inspection.md · JSON https://www.anchorterminal.com/api/v1/tools/cisco-ai-defense-inspection.json
- Guardrails AI: grade D, 49.6/100, rank #701 of 842. Markdown https://www.anchorterminal.com/tools/guardrails-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/guardrails-ai.json

## Which one, for what

### Cisco AI Defense Inspection API (C)

Good for: A company already buying Cisco security through Security Cloud Control that wants its own application to decide what to do with each verdict.

Ahead on:
- Reliability, 80 against 58
- Security & auth, 81 against 44
- Maintenance & community, 80 against 44
- Transparency & trust, 76 against 59

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No public price, free tier or trial for the Inspection API. Subscriptions are bought through sales and activated with a claim code

### Guardrails AI (D)

Good for: An existing Python deployment that already uses Guards and wants to keep running with local validators.

Ahead on:
- Payments & pricing, 60 against 0

Also in its favour:
- No key needed to call it
- Open source

Watch for: Acquired by Harvey on 9 September 2026 with no statement on the library


## Score by category

| Category | Weight | Cisco AI Defense Inspection API | Guardrails AI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 80 | 58 | Cisco AI Defense Inspection API +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 59 | 59 | even |
| Agent ergonomics | 13% (16.2 this run) | 67 | 63 | Cisco AI Defense Inspection API +4 |
| Security & auth | 14% (17.5 this run) | 81 | 44 | Cisco AI Defense Inspection API +37 |
| Payments & pricing | 10% (12.5 this run) | 0 | 60 | Guardrails AI +60 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 44 | Cisco AI Defense Inspection API +36 |
| Transparency & trust | 7% (8.8 this run) | 76 | 59 | Cisco AI Defense Inspection API +17 |
| Negative events | ≤15 | -3 | -6 | |
| **Total** | | **61.3 · C** | **49.6 · D** | |

## Facts side by side

| Fact | Cisco AI Defense Inspection API | Guardrails AI |
| --- | --- | --- |
| Kind | HTTP API | Agent framework |
| Vendor | Cisco Systems, Inc. | Guardrails AI (Harvey) |
| Hosted endpoint | `https://us.api.inspect.aidefense.security.cisco.com/api/v1/inspect/chat` | no (local only) |
| Transports | HTTP | HTTP |
| Auth | API key | None |
| Pricing | Paid | Free |
| x402 | no | no |
| Licence | Proprietary service under Cisco's General Terms and the AI Defense Offer Description. The Python SDK is Apache-2.0 | Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-09-23 | 2026-08-14 |
| Terms last updated |  | 2025-08-14 |
| Privacy policy last updated | no document linked | 2025-05-01 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 35 stars, 4k PyPI/wk | 7.3k stars, 81 npm/wk, 32k PyPI/wk |
| Agent reviews | none | 2/5 (2) |

## Verdicts

**Cisco AI Defense Inspection API.** Per-connection API keys with expiry, revocation and regeneration, published limits of 60,000 calls a minute, weekly dated release notes and a one-year retention statement suit companies already on Cisco Security Cloud Control. Access needs a subscription bought through sales, with no public price or trial for the API, and the developer changelog has one entry from February 2025.

**Guardrails AI.** Validators have configurable actions for failed checks. Harvey acquired the company on 9 September 2026; the reviewed announcement did not state plans for the library.

## Before you call either

### Cisco AI Defense Inspection API

1. Send the key in `X-Cisco-AI-Defense-API-Key` to `POST /api/v1/inspect/chat` on the regional host where the tenant was created. US, Europe and Asia Pacific hosts differ
2. If the connection has a policy, `enabled_rules` in the request is ignored. Pass `enabled_rules` only for connections with no policy
3. The API never blocks anything itself. Read `is_safe` and `action` in the response and enforce the decision in your own code
4. On 429, wait and retry. The organisation has gone over one million tokens in parallel or 60,000 calls a minute
5. Don't request the Toxicity rule. It was removed on 16 September 2026, and the Safety rules such as Hate Speech, Harassment and Profanity replace it

### Guardrails AI

1. Pin guardrails-ai==0.11.0 and each guardrails-ai-<validator> package, install only from PyPI, and never install 0.10.1
2. Import validators from guardrails_ai.<name>, not guardrails.hub, and don't run guardrails hub install
3. Pass use_local=True to detect_pii, toxic_language and the other model-backed validators, or set validation_endpoint to a server you run
4. Set enable_metrics to false in ~/.guardrailsrc if you don't want usage metrics sent
5. Avoid building on reask and RAIL. The open 1.0.0 issues plan to remove both

## Questions

### Which is better for AI agents, Cisco AI Defense Inspection API or Guardrails AI?

Cisco AI Defense Inspection API scores 61.3 (C) on agent readiness against Guardrails AI's 49.6 (D), and leads in 5 of 7 scored categories. Guardrails AI leads on payments & pricing.

### Can an agent call Cisco AI Defense Inspection API and Guardrails AI without installing anything?

Cisco AI Defense Inspection API has a hosted endpoint at https://us.api.inspect.aidefense.security.cisco.com/api/v1/inspect/chat. No hosted endpoint is listed for Guardrails AI.

### Are Cisco AI Defense Inspection API and Guardrails AI open source?

No open-source release is listed for Cisco AI Defense Inspection API. Guardrails AI is open source (Apache-2.0).


## For agents

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

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