Lasso Security

Lasso Security is a GenAI security platform that protects every LLM and AI agent touchpoint. Its Deputy gateway inspects LLM and MCP traffic in real time, and the Classify / Threat Detection API scores prompts and completions for prompt injection, jailbreaks, PII, and harmful content, returning structured BLOCK / WARN / AUTO_MASKING findings.

Lasso Security publishes 1 API on the APIs.io network: Classify API. Tagged areas include Artificial Intelligence, LLM, GenAI Security, Prompt Injection, and Guardrails.

Lasso Security’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.5/100 thin ▬ flat Agent 28/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers

Artificial Intelligence LLMGenAI SecurityPrompt Injection Guardrails MCP

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

Classify

POST /classify

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 35.5/100 · thin

Contract Quality 9.3 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.4 / 15

Operational Transparency 3.0 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/lasso-security: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Lasso Security Classify API

The Classify API from Lasso Security — 2 operation(s) for classify.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Lasso Security / Threat Detection Classify API

OPEN COLLECTION

Lasso Security / Threat Detection Classify Masking API

OPEN COLLECTION

Lasso Security Classify / Threat Detection API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Lasso Security MCP Server

Remote MCP server at mcp.lasso.security over HTTP.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Lasso Security Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Lasso Security Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Lasso Security Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Lasso Security Authentication

apiKey · 1 scheme

SECURITY

Lasso Security Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Lasso Security Agentic Access

2 operations · 2 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: lasso-security
url: https://raw.githubusercontent.com/api-evangelist/lasso-security/refs/heads/main/apis.yml
name: Lasso Security
kind: company
description: Lasso Security is a GenAI security platform that protects every LLM and AI agent touchpoint. Its Deputy gateway
  inspects LLM and MCP traffic in real time, and the Classify / Threat Detection API scores prompts and completions for prompt
  injection, jailbreaks, PII, and harmful content, returning structured BLOCK / WARN / AUTO_MASKING findings.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/lasso-security.png
tags:
- Artificial Intelligence
- LLM
- GenAI Security
- Prompt Injection
- Guardrails
- MCP
tags_raw:
- AI
- LLM
- GenAI Security
- Prompt Injection
- Guardrails
- MCP
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: lasso-security:lasso-security-classify-api
  name: Lasso Security Classify API
  description: The Classify API from Lasso Security — 2 operation(s) for classify.
  humanURL: https://www.lasso.security/platform/lasso-for-applications
  baseURL: https://server.lasso.security/gateway/v3
  tags:
  - Classify
  properties:
  - type: OpenAPI
    url: openapi/lasso-security-classify-api-openapi.yml
  - type: Documentation
    url: https://www.lasso.security/platform/lasso-for-applications
  - type: APIReference
    url: https://docs.litellm.ai/docs/proxy/guardrails/lasso_security
  - type: PostmanCollection
    url: collections/lasso-security.postman_collection.json
  - type: OpenCollection
    url: collections/lasso-security.opencollection.json
  - type: Documentation
    url: https://github.com/lasso-security/mcp-gateway
  - type: Documentation
    url: https://www.lasso.security/resources/lasso-releases-first-open-source-security-gateway-for-mcp
common:
- type: CapabilityMap
  url: capabilities/lasso-security-capability-edges.yml
  name: Lasso Security Business Capability Map
- type: AgenticAccess
  url: agentic-access/lasso-security-agentic-access.yml
- type: DomainSecurity
  url: security/lasso-security-domain-security.yml
- type: Authentication
  url: authentication/lasso-security-authentication.yml
- type: GitHubOrganization
  url: https://github.com/lasso-security
- type: LinkedIn
  url: https://www.linkedin.com/company/lasso-security
- type: Website
  url: https://www.lasso.security/
- type: Documentation
  url: https://www.lasso.security/platform/lasso-for-applications
- type: Plans
  url: plans/lasso-security-plans-pricing.yml
- type: RateLimits
  url: rate-limits/lasso-security-rate-limits.yml
- type: FinOps
  url: finops/lasso-security-finops.yml
- type: Blog
  url: https://www.lasso.security/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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