Getting started
Overview
Calibrated decisions and document understanding behind one API key.
Nace Console is the API for deciding about text and reading documents, and for answering questions from your own files. Drex answers typed questions about any text or JSON with a calibrated probability for every answer. Perception, powered by NDI (Nace Document Intelligence), turns PDFs, spreadsheets, scans and other files into Markdown, structured fields and exact citations. Workspaces hold the files you want answers from: search them or ask an agent about them, and every answer comes with the passages it rests on. Drex and Perception run on the same API key and the same balance.
What you can build:
- Triage and routing that labels support tickets, emails or events, and acts only when the model is sure enough.
- Review queues that send low-confidence answers to a person and automate the rest.
- Document intake that classifies a packet, splits it into documents and routes each one.
- Structured extraction from invoices, contracts and statements into your JSON schema, with citations for every field.
- Retrieval pipelines fed with layout-aware Markdown and chunks from any document.
- Evidence checks that find exactly where a quote appears in its source.
- Answers from your files: a workspace of contracts, ledgers or reports you search, or ask an agent about, with the passages behind every answer.
- Shared reviews of a deal room or an audit file, with people you invite from outside your account.
Products
Drex
A decision model. Send state and named questions (yes/no, multiple choice or a scale) and get every answer in one call, each with its probabilities.
Perception
Five document tools at POST /v1/documents/{tool}, each a job you can wait on or poll.
Workspaces
Upload your files once, then search them or ask an agent about them. Every answer comes with the passages it rests on.
Perception's tools
Each tool is its own endpoint, and they chain: parse a file once, then pass the parse to Split, Extract or Ground so it isn't parsed and paid for again.
Parse
Markdown, text, layout blocks or chunks from any page.
Extract
Fill a JSON schema, with a status and citations for each field.
Classify
Label a document, or each page, with your classes.
Split
Cut a packet into documents, each with a class.
Ground
Find where each quote appears, with its exact location.
Perception reads PDFs, Word documents, spreadsheets, presentations, images, HTML, Markdown, JSON and more. See Format support.
Workspaces
A workspace holds the files you want answers from: contracts, ledgers, reports, spreadsheets, emails, recordings.
Search
One question, answered once from a workspace's files, with the evidence for it.
Sharing
Invite people from outside your account into a workspace.
Workspaces API
Create workspaces, upload files, ingest them and search, from your own code.
How to use it
Dashboard
Try Drex in the Playground and run Perception's tools on your own files, with the code for each request.
API reference
Plain HTTP with a Bearer key. Every route with its parameters and responses, and a playground to send a request.
SDKs
The Python and TypeScript SDKs, with typed answers, retries and errors.
CLI
nace asks questions and runs document jobs from your shell.
Remote MCP server
Connect an agent to Drex's decide and list_models tools with one URL. No installation; try it without an API key within the free limits.
Local MCP server
Run nace-mcp for decisions, documents, cloud browser automation, workspaces and search. Requires a Nace API key.
One key, one balance
Drex evaluations, Perception jobs and Drex Search draw from the same account balance. A new account gets $5.00 of signup balance once a person is behind it; after that, top up or pay as you go. See Pricing.
Documents stay yours: an owner or admin can turn on zero retention, so each result is returned once and never stored.
Drex Search pricing
Drex Search costs $0.10 per million input tokens and $0.50 per million output tokens across its models and tools. For example, 800,000 input tokens and 200,000 output tokens cost $0.18. The account starting the search pays, including in an invited workspace. Cached input counts once; answer-cache hits, failed and cancelled searches are free. See Drex Search pricing for details.