Understudy Labs

aid: understudy-labs
name: Understudy Labs
description: Understudy Labs (YC S26) is an LLM gateway and model-optimization platform that helps teams move repeated production
  LLM workloads onto open-weight models they own. The Understudy gateway is a drop-in replacement for the Anthropic and OpenAI
  API endpoints that captures request/response traces by project and workload, routes measured slices of traffic to managed
  open models, and falls back safely. A REST control plane manages keys, projects, workloads, routing, captures, evaluation
  cohorts, and reporting, while the MIT-licensed understudy-agent-tools repo ships a CLI, a coding-agent skill library, a
  local MCP server, and Understudy Desktop with a documented loopback OpenAPI 3.1 contract.
url: https://raw.githubusercontent.com/api-evangelist/understudy-labs/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://bookface-images.s3.amazonaws.com/small_logos/034b1bab6d92bd99439aee47bf2312630046798c.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profile
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Artificial Intelligence
- LLM Gateway
- Machine Learning
- Open Source
- Model Routing
- Evaluations
- Fine-Tuning
- AI Infrastructure
- Developer Tools
apis:
- aid: understudy-labs:understudy-gateway-api
  name: Understudy Gateway API
  description: Anthropic- and OpenAI-compatible LLM proxy at api.understudylabs.com. POST /v1/messages (Anthropic Messages),
    POST /v1/chat/completions (OpenAI Chat Completions), POST /v1/messages/count_tokens, GET /v1/models (public managed-model
    catalog), and GET /healthz. Supports bring-your-own-key passthrough and managed catalog models, capture of request/response
    evidence, canary routing with fallback, and x-understudy-* scoping, tagging, and legibility headers.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - LLM Gateway
  - Proxy
  - Model Routing
  properties:
  - type: Documentation
    url: https://docs.understudylabs.com/reference/proxy-endpoints
  - type: APIReference
    url: https://docs.understudylabs.com/reference/request-headers
- aid: understudy-labs:understudy-control-plane-api
  name: Understudy Control Plane API
  description: REST surface behind the dashboard and CLI, served from the gateway host under /admin/v1 and /customer/v1, org-scoped
    and authenticated with sk_* bearer keys. Covers API key mint/list/revoke, project CRUD by slug, workload CRUD, the model
    catalog, route writes with traffic percentages, capture listing and envelope fetch, evaluation capture catalogs with frozen
    cohorts and audited short-lived exports, and reporting endpoints for routing status, provider health, workload status,
    and usage summaries.
  humanURL: https://docs.understudylabs.com/reference/control-plane
  baseURL: https://api.understudylabs.com
  tags:
  - Control Plane
  - API Keys
  - Routing
  - Evaluations
  properties:
  - type: Documentation
    url: https://docs.understudylabs.com/reference/control-plane
  - type: APIReference
    url: https://docs.understudylabs.com/reference/control-plane/keys
- aid: understudy-labs:understudy-labs-capabilities-api
  name: Understudy Labs Capabilities API
  description: The Capabilities API from Understudy Labs — 1 operation(s) for capabilities.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Capabilities
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-capabilities-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-conversations-api
  name: Understudy Labs Conversations API
  description: The Conversations API from Understudy Labs — 1 operation(s) for conversations.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Conversations
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-conversations-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-downloads-api
  name: Understudy Labs Downloads API
  description: The Downloads API from Understudy Labs — 3 operation(s) for downloads.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Downloads
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-downloads-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-feedback-api
  name: Understudy Labs Feedback API
  description: The Feedback API from Understudy Labs — 1 operation(s) for feedback.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-feedback-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-metrics-api
  name: Understudy Labs Metrics API
  description: The Metrics API from Understudy Labs — 1 operation(s) for metrics.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-metrics-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-models-api
  name: Understudy Labs Models API
  description: The Models API from Understudy Labs — 2 operation(s) for models.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-models-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-residency-api
  name: Understudy Labs Residency API
  description: The Residency API from Understudy Labs — 6 operation(s) for residency.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Residency
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-residency-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-runs-api
  name: Understudy Labs Runs API
  description: The Runs API from Understudy Labs — 2 operation(s) for runs.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Runs
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-runs-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-status-api
  name: Understudy Labs Status API
  description: The Status API from Understudy Labs — 1 operation(s) for status.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-status-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
- aid: understudy-labs:understudy-labs-supervision-api
  name: Understudy Labs Supervision API
  description: The Supervision API from Understudy Labs — 1 operation(s) for supervision.
  humanURL: https://docs.understudylabs.com/reference/proxy-endpoints
  baseURL: https://api.understudylabs.com
  tags:
  - Supervision
  properties:
  - type: OpenAPI
    url: openapi/understudy-labs-supervision-api-openapi.yml
  - type: Documentation
    url: https://docs.understudylabs.com/open-source/desktop-task-models
common:
- type: AgenticAccess
  url: agentic-access/understudy-labs-agentic-access.yml
- type: Authentication
  url: authentication/understudy-labs-authentication.yml
- type: DomainSecurity
  url: security/understudy-labs-domain-security.yml
- type: Website
  url: https://understudylabs.com
- type: DeveloperPortal
  url: https://docs.understudylabs.com
- type: Documentation
  url: https://docs.understudylabs.com
- type: APIReference
  url: https://docs.understudylabs.com/reference/proxy-endpoints
- type: GettingStarted
  url: https://docs.understudylabs.com/quickstart
- type: Login
  url: https://app.understudylabs.com
- type: Support
  url: https://understudylabs.com/contact
- type: Blog
  url: https://understudylabs.com/research
- type: GitHubOrganization
  url: https://github.com/understudylabs
- type: TermsOfService
  url: https://understudylabs.com/terms
- type: PrivacyPolicy
  url: https://understudylabs.com/privacy
- type: LLMsTxt
  url: llms/understudy-labs-llms.txt
- type: WellKnown
  url: well-known/understudy-labs-well-known.yml
- type: MCPServer
  url: mcp/understudy-labs-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/understudy-labs-problem-types.yml
- type: Conventions
  url: conventions/understudy-labs-conventions.yml
- type: Lifecycle
  url: lifecycle/understudy-labs-lifecycle.yml
- type: Conformance
  url: conformance/understudy-labs-conformance.yml
- type: Packages
  url: packages/understudy-labs-packages.yml
- type: CLI
  url: cli/understudy-labs-cli.yml
- type: ChangeLog
  url: changelog/understudy-labs-changelog.yml
- type: DataModel
  url: data-model/understudy-labs-data-model.yml
- type: Arazzo
  url: arazzo/understudy-labs-download-warm-and-chat.yml
  name: Download, warm, and chat with a local model on Understudy Desktop
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 24
  pass: local-v1