# .txt

**Canonical:** https://apis.io/providers/txt/  
**Website:** https://dottxt.ai  
**APIs profiled:** 6

.txt (dottxt) is the structured-generation company behind the open-source Outlines library (65M+ downloads). Its hosted platform, the dottxt API at api.dottxt.ai, is an OpenAI-compatible pay-per-token API whose defining contract is schema enforcement: a JSON Schema passed in response_format is compiled and enforced by constrained decoding, so model outputs are guaranteed valid — including field-by-field RFC 6902 JSON Patch streaming, Open Responses support, embeddings, and JSONL batch processing. Founded by the Outlines maintainers and backed by Seedcamp; inference is operated with launch partner Doubleword.

## Kin Score — 42.7 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 42.7).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 57.0 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 63.7 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

## Agent readiness — 46.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | documented |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (6)

- **.txt batches API** — Process large volumes of requests asynchronously. Batch processing is ideal when you: - Have many requests that don't need immediate responses - Want to process data in bulk (e....
- **.txt chat API** — Create model responses for chat conversations. Supports: - **Multi-turn dialogue** with conversation history - **System prompts** to control model behavior - **Tool calling** fo...
- **.txt embeddings API** — Generate vector representations of text. Use embeddings for: - **Semantic search** - find content by meaning, not just keywords - **Clustering** - group similar documents togeth...
- **.txt files API** — Upload and manage JSONL files for batch processing. Each line in the file should be a JSON object with: - `custom_id` - your identifier for tracking the request - `method` - HTT...
- **.txt models API** — List and retrieve information about available models. Use these endpoints to discover which models you have access to and their capabilities.
- **.txt responses-api API** — Create model responses with enhanced capabilities. Open Responses compatible endpoint providing advanced features: - **Reasoning models** - Control computational effort with `re...

## MCP servers (1)

- **.txt MCP Server** — .txt (dottxt) publishes a hosted, unauthenticated MCP server for its documentation via Mintlify: the manifest at docs.dottxt.ai/.well-known/mcp.json (saved verbatim in well-know...

## Agentic access (1)

- **Txt Agentic Access** — 20 operations · 10 acting

## Security (2)

- **Txt Authentication** — http-bearer · 1 scheme
- **Txt Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Artificial Intelligence, LLM, Structured Outputs, JSON-Schema, Inference, Developer Tools, Machine-Learning

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/txt/). Scores are computed from the provider's own public artifacts under a published rubric.