aid: dottxt
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dottxt.png
name: dottxt
description: >-
  dottxt (styled .txt) is the company behind Outlines, the open-source
  structured-generation library for LLMs with 65M+ downloads. Its hosted
  platform API (api.dottxt.ai) is an OpenAI-compatible Chat Completions endpoint
  that guarantees 100% schema-compliant model output by construction using
  constrained decoding: pass a JSON Schema via `response_format` and the model
  produces exactly that shape — no retries, no validation loops, no defensive
  parsing. Output can be streamed as token deltas (SSE) or field-by-field as RFC
  6902 JSON Patch events. dottxt also ships self-hosted, drop-in replacements for
  vLLM, SGLang and TensorRT-LLM inference servers, and composable libraries
  (dotjson for JSON Schema, dotgrammar for context-free grammars, dotlambda for
  function calling). Backed by EQT Ventures and Seedcamp.
url: https://raw.githubusercontent.com/api-evangelist/dottxt/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- eqt-ventures
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Artificial Intelligence
- LLM
- Structured Outputs
- JSON Schema
- Machine Learning
- Developer Tools
- Constrained Decoding
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: dottxt:dottxt-chat-api
  name: dottxt Chat API
  description: OpenAI-compatible chat completions with structured output.
  humanURL: https://docs.dottxt.ai/api/overview
  baseURL: https://api.dottxt.ai/v1
  tags:
  - Chat
  properties:
  - type: OpenAPI
    url: openapi/dottxt-chat-api-openapi.yml
  - type: Documentation
    url: https://docs.dottxt.ai
  - type: APIReference
    url: https://docs.dottxt.ai/api/overview
- aid: dottxt:dottxt-models-api
  name: dottxt Models API
  description: Models available to your API key.
  humanURL: https://docs.dottxt.ai/api/overview
  baseURL: https://api.dottxt.ai/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/dottxt-models-api-openapi.yml
  - type: Documentation
    url: https://docs.dottxt.ai
  - type: APIReference
    url: https://docs.dottxt.ai/api/overview
common:
- type: DeveloperPortal
  url: https://docs.dottxt.ai
- type: Documentation
  url: https://docs.dottxt.ai
- type: APIReference
  url: https://docs.dottxt.ai/api/overview
- type: GettingStarted
  url: https://docs.dottxt.ai/quickstart
- type: SignUp
  url: https://h1xbpbfsf0w.typeform.com/to/fwQNWmS8
- type: Blog
  url: https://blog.dottxt.ai/
- type: GitHubOrganization
  url: https://github.com/dottxt-ai
- type: TermsOfService
  url: https://dottxt.ai/terms-of-service
- type: PrivacyPolicy
  url: https://dottxt.ai/privacy-policy
- type: Authentication
  url: authentication/dottxt-authentication.yml
- type: Conventions
  url: conventions/dottxt-conventions.yml
- type: ErrorCatalog
  url: errors/dottxt-problem-types.yml
- type: Lifecycle
  url: lifecycle/dottxt-lifecycle.yml
- type: Conformance
  url: conformance/dottxt-conformance.yml
- type: Packages
  url: packages/dottxt-packages.yml
- type: SDKs
  url: packages/dottxt-packages.yml
- type: MCPServer
  url: mcp/dottxt-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/dottxt-llms.txt
- type: DataModel
  url: data-model/dottxt-data-model.yml
- type: DomainSecurity
  url: security/dottxt-domain-security.yml
- type: AgenticAccess
  url: agentic-access/dottxt-agentic-access.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence