Lasso Security

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.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- AI
- LLM
- GenAI Security
- Prompt Injection
- Guardrails
- MCP
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: lasso-security:classify-threat-detection-api
  name: Lasso Classify / Threat Detection API
  tags:
  - Classify
  - Threat Detection
  - Guardrails
  - PII
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.lasso.security/platform/lasso-for-applications
  baseURL: https://server.lasso.security/gateway/v3
  properties:
  - url: https://www.lasso.security/platform/lasso-for-applications
    type: Documentation
  - url: https://docs.litellm.ai/docs/proxy/guardrails/lasso_security
    type: APIReference
  - url: openapi/lasso-security-openapi.yml
    type: OpenAPI
  - url: collections/lasso-security.postman_collection.json
    type: PostmanCollection
  - url: collections/lasso-security.opencollection.json
    type: OpenCollection
  description: REST API that classifies LLM prompts and completions for security violations -
    prompt injection, jailbreaks, harmful content, custom policies, and PII - via POST
    /classify, returning structured deputy findings with BLOCK / WARN / AUTO_MASKING
    action levels and severity. POST /classifix additionally returns PII-masked messages.
- aid: lasso-security:llm-gateway-deputy
  name: Lasso LLM Gateway (Deputy)
  tags:
  - Gateway
  - Deputy
  - LLM Firewall
  - Runtime Protection
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.lasso.security/platform/lasso-for-applications
  baseURL: https://server.lasso.security/gateway/v3
  properties:
  - url: https://www.lasso.security/platform/lasso-for-applications
    type: Documentation
  - url: openapi/lasso-security-openapi.yml
    type: OpenAPI
  description: Runtime LLM firewall / gateway powered by Lasso Intent Deputies that inspects
    every prompt and response at the intent layer - decoding obfuscation techniques and
    detecting prompt injection, goal manipulation, and data leakage. Deployed in front of
    LLM applications via Gateway, API, or SDK and backed by the same /classify scoring engine.
- aid: lasso-security:mcp-gateway
  name: Lasso MCP Gateway
  tags:
  - MCP
  - Gateway
  - Security Scanner
  - Open Source
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://github.com/lasso-security/mcp-gateway
  baseURL: https://server.lasso.security/gateway/v3
  properties:
  - 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
    type: Documentation
  - url: openapi/lasso-security-openapi.yml
    type: OpenAPI
  description: Open-source (MIT, Python) plugin-based gateway that proxies and orchestrates
    Model Context Protocol (MCP) servers, intercepting requests and responses to mask secrets
    and PII, block prompt injection, scan server reputation, and enforce custom policies via
    the Lasso v3 classify API using a LASSO_API_KEY.
common:
- 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
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com