Guardrails AI
Open-source guardrails framework plus the Guardrails Hub of validators that detect policy violations, hallucinations and data leakage in LLM and agent outputs at runtime. Harvey announced its acquisition of Guardrails AI on Sep 8, 2026.
Acquired · Verified 2026-10-29 · fresh as of 2026-10-29 · 15 cited facts, 1 with a third-party source · 2 recorded changes · Suggest a correction
At a glance
- Tier
- T3
- Section
- Guardrails & AI security
- Created
- 2023-01-29 repo fix
- Latest release
- last commit 2026-08-26 repo fix
- License
- Apache-2.0 vendor fix
- Pricing
- searched not found fix
- Funding
- Acquired by Harvey (2026-09-09; terms undisclosed) third-party fix
- Freshness
- 2026-10-29 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source vendor fix
- SDK languages
- python, typescript repo fix
- Protocols
- openai-compatible repo fix
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
The guardrails framework for building, governing, and scaling production GenAI across any LLM and deployment environment.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- searched not found
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- searched not found
- A2A
- searched not found
- OpenTelemetry
- searched not found
Similar systems
Other guardrails & ai security in the catalog, ranked by inbound references.
- Azure AI Content Safety Prompt Shields T3
Azure AI Content Safety API that detects user prompt attacks and indirect (document) prompt injection aimed at manipulating a model's behavior, alongside groundedness, protected-material and task-adherence checks.
- Amazon Bedrock Guardrails T3
Configurable safeguards that filter harmful text and image content, redact sensitive information, block denied topics and detect hallucinations. They apply consistently across foundation models in Amazon Bedrock and self-hosted or third-party models.
- Google Cloud Model Armor T3
Runtime security service that screens AI prompts, responses and agent interactions for prompt injection, jailbreaks, malicious URLs, sensitive-data leaks and harmful content, with adjustable confidence thresholds.
- CrowdStrike Falcon Guardian (formerly Pangea AI Guard) T3
AI detection and response product that discovers, governs and secures AI agents at runtime across endpoint, cloud and SaaS. It is built on Pangea, which CrowdStrike agreed to acquire in September 2025, and pangea.cloud's AI Guard page now redirects here.
- Presidio T3
Open-source framework for detecting, redacting, masking and anonymizing PII in text, images and structured data, commonly used to scrub prompts and responses around LLMs. Originally a Microsoft project, it has transitioned to community ownership under Data Privacy Stack.
- Prompt Security (SentinelOne) T3
AI security platform that controls employee AI tool usage, protects homegrown AI apps and autonomous agents, and redacts sensitive data and enforces policy across AI services. It is now offered by SentinelOne, and prompt.security links to SentinelOne's product page.
Sources (14 cited facts, 1 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Framework vendor
- What it does & what's distinct Open-source guardrails framework plus the Guardrails Hub of validators that detect polic… vendor
- Claims / benefits The guardrails framework for building, governing, and scaling production GenAI across an… vendor
- Created 2023-01-29 repo
- Latest release last commit 2026-08-26 repo
- License Apache-2.0 vendor
- GitHub https://github.com/guardrails-ai/guardrails (7568★) repo
- Mindshare 7568 GitHub stars repo
- Funding Acquired by Harvey (2026-09-09; terms undisclosed) third-party
- Project & sources https://guardrailsai.com/ ; https://github.com/guardrails-ai/guardrails vendor
- licensing-bucket open-source vendor
- taxonomy-three-layer-rollup agent-infra repo
- sdk-languages python,typescript repo
- protocol-support openai-compatible repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
Related systems
References (4)
- LangChain (framework) integrates with — Guardrails AI docs have a LangChain integration page. (verified 2026-10-29)
- LangSmith integrates with — Guardrails AI docs have a LangSmith integration section on its LangChain page. (verified 2026-10-29)
- LlamaIndex (framework) integrates with — Guardrails AI docs have a LlamaIndex integration page. (verified 2026-10-29)
- MLflow integrates with — Guardrails AI docs have an MLflow GenAI integration page. (verified 2026-10-29)
Referenced by (3)
- LiteLLM integrates with — LiteLLM docs have a Guardrails AI guardrail page. (verified 2026-10-29)
- NVIDIA NeMo Guardrails integrates with — NeMo Guardrails docs have a Guardrails AI third-party guardrail page. (verified 2026-10-29)
- TrueFoundry AI Gateway integrates with — TrueFoundry AI Gateway ecosystem lists a Guardrails AI integration page. (verified 2026-10-29)