Invariant Guardrails
Open-source rule engine that checks LLM messages and MCP tool calls against Python-style policies, run locally or through a proxy
By Invariant Labs AG (Snyk) · invariantlabs.ai
Package download activity
Invariant Guardrails has no PyPI or npm package that maps to it (SDK not mapped (its registry metadata does not link the vendor's domain or GitHub organisation)). This is not a zero.
Packages not measured
The vendor's docs name these packages, but their registry metadata does not link the vendor's domain or GitHub organisation, so under our mapping rule they are not counted. No download number is shown for them.
- PyPI
invariant-ai: registry metadata has no project/repository/homepage link (registry metadata, checked 2026-10-07)
GitHub stars
invariantlabs-ai/invariant: 467 stars (rank 36). Stars are a point-in-time count of a repository's bookmarks, not people using the tool.
Series starts 2026-W40 (467).
Facts
| Categories | Guardrails & safety | |
|---|---|---|
| Status | Generally available | |
| Licence | Apache-2.0 | source, checked 2026-10-07 |
| Self-host | Yes | source, checked 2026-10-07 |
| OpenTelemetry | Unknown | source, checked 2026-10-07 |
| Pricing model | free | |
| Entry price | Free; Open-source library and Gateway are free; the vendor's hosted Guardrails platform page only offers an early-access signup, no price | source, checked 2026-10-07 |
| Free tier | Yes | |
| Measurability | SDK not mapped (its registry metadata does not link the vendor's domain or GitHub organisation) |
Facts last verified 2026-10-07 on first-party pages. Prices as published, taxes excluded; non-USD prices are not converted.
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