Guardrails
Business capabilities this tag reaches
Information & Data Management 2
Variants seen in the corpus:
Guardrailsguardrails
Providers using this tag (35)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 2 Solid coverage with minor gaps
Developing 21 Usable, with meaningful gaps to close
Thin 7 Limited public surface area
Emerging 3 Early or largely undocumented
APIs with this tag (20)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Strong 1 Solid coverage with minor gaps
Developing 10 Usable, with meaningful gaps to close
Portkey Guardrails APICreate, List, Retrieve, Update, and Delete prompt Guardrails.Comet Guardrails APIGuardrails related resourcesTraefik AI GatewaySelf-hosted Kubernetes-native gateway for LLM traffic. OpenAI-compatible unified API in front of OpenAI, An...Opik Guardrails APIGuardrails related resourcesFiddler REST APIREST API (v3) for the Fiddler AI Observability platform — projects, models, applications, events, traces/se...Aleph Alpha Guardrails APICheck content against guardrail policies.H2O.ai Guardrails APIThe Guardrails API from H2O.ai — 4 operation(s) for guardrails.Tavus Guardrails APIThe Guardrails API from Tavus — 2 operation(s) for guardrails.W&B Weave (LLM Observability)LLM observability and evaluation platform providing tracing, output evaluation, cost estimation, prompt pla...AI Custom Guardrail PluginLets operators define custom guardrail logic for prompts and responses without writing a full Kong plugin.
Thin 6 Limited public surface area
AI Gateway Guardrails APIThe Guardrails API from AI Gateway — 1 operation(s) for guardrails.PortkeyPortkey is a production-grade AI gateway and control plane that fronts 1,600+ LLMs with unified routing, fa...Tetrate Agent Router ServiceTetrate Agent Router Service is an Envoy AI Gateway-as-a-service from the creators of Envoy, providing an a...Traefik AI GatewayTraefik AI Gateway is an enterprise, self-hosted, Kubernetes-native AI gateway with safety and governance (...Corridor Guardrails APIManage per-project security guardrails (reports) and packs.LiteLLM Guardrails APIProvides /guardrails/apply_guardrail endpoint for applying configured content filtering and safety guardrai...
Emerging 3 Early or largely undocumented
AI Firewall (Legacy)The Robust Intelligence AI Firewall provided runtime guardrails for LLM and ML applications, screening prom...Aporia Guardrails (Legacy)The original Aporia Guardrails product offered millisecond-latency policy enforcement on LLM prompts and re...Coralogix AI GuardrailsCoralogix AI Guardrails is the post-acquisition continuation of Aporia's guardrails product, intercepting p...
Score breakdown
Frequency
47.7
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
46.2
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor
Related tags
Red Teaming 8 co-occurrences
AI Observability 7 co-occurrences
LLM Security 7 co-occurrences
Prompt Injection 6 co-occurrences
LLM Evaluation 6 co-occurrences
Model Monitoring 5 co-occurrences
Prompts 7 co-occurrences
AI Security 9 co-occurrences
Where this tag comes from
Provider tag24
Api tag20
Openapi tag8
Openapi op tag25
Cohort brief
Auto-generatedThe 35 providers in the APIs.io catalog tagged Guardrails, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
35
all scored
Mean Kin Score
37.9
+17.2 vs catalog 20.7
Mean Agent Readiness
20.7
+11.0 vs catalog 9.7
Spread
8.7–54.7
median 40.1 · σ 12.3
How the 35 split by band
Exemplar 0Strong 2Developing 17Thin 10Emerging 4Minimal 2
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 40.8 | 17.9 | +22.9 | 35 |
| Contract Quality | 37.6 | 17.5 | +20.1 | 35 |
| Operational Transparency | 30.6 | 11.3 | +19.3 | 35 |
| Access Clarity | 39.1 | 22.3 | +16.8 | 35 |
| Discoverability | 72.4 | 60.4 | +12 | 35 |
| Contract Governance | 10.3 | 6.4 | +3.9 | 35 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 40% | 16% | +24 |
| MCP server (first-party) | 26% | 7% | +19 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 11% | 9% | +2 |
| Security | 100% | 88% | +12 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 17% | 13% | +4 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Civic 54.7
- 2 Fiddler Labs 54.4
- 3 H2O.ai 51.9
- 4 ActiveFence 51.6
- 5 Portkey 51.3
- 6 Comet 49
- 7 ArthurAI 48.4
- 8 Opik 48.2
- 9 Aleph Alpha 47.9
- 10 Vijil 47.6
Top by Agent Readiness
- 1 H2O.ai 46.9
- 2 ArthurAI 41.5
- 3 Galileo Technologies 37.9
- 4 Portkey 36
- 5 Comet 32.5
- 6 Arthur AI 31.5
- 7 ActiveFence 30.4
- 8 Aleph Alpha 29.9
- 9 Gray Swan 29.3
- 10 Vijil 29.1
All 35 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.