Documents in, structured JSON out. You name the fields, one API call returns them typed.
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Fieldcast Overview
Fieldcast is an LLM-native document extraction API. Instead of computer-vision templates or a fixed invoice schema, it reads the document and returns exactly the fields you asked for. You pass a list of field names with the request, up to 40 per call, named however your own database already names them, so a layout nobody has seen before needs no new configuration. The constraint that matters most: it never invents a value. A field absent from the source comes back null, which is what makes it safe for accounting work. An x402 endpoint is live on Base Sepolia for agents that pay per call. Free tier: 50 extractions a month, no card.
How to evaluate Fieldcast for ai docs agents workflows
Fieldcast is listed as a freemium ai docs agents AI agent with api access. Use this page to compare its core capabilities, practical use cases, pricing model, and alternatives before adding it to your workflow.
A strong first-fit use case is Extracting supplier, totals, VAT and dates from invoices into accounting systems, especially if your team is shortlisting ai docs agents tools for a specific operational need.
Best-fit checks before choosing:
- Confirm that freemium pricing matches your expected usage volume.
- Compare Fieldcast with similar ai docs agents AI agents in the alternatives section.
- Validate the key capability: No templates to configure - field names travel with each request.
Fieldcast Key Features
No templates to configure - field names travel with each request
Returns null for missing fields instead of fabricating a value
Typed output: numbers as numbers, dates normalised to ISO-8601
Up to 40 fields per call, named to match your own schema
x402 endpoint so agents can pay per call without an account
Fieldcast Use Cases
Extracting supplier, totals, VAT and dates from invoices into accounting systems
Pulling merchant, amount and date from expense receipts
Reading effective dates, counterparties and notice periods from contracts
Giving an AI agent a one-call tool to read a document without loading it into context
Agencies onboarding a new client by changing a field list rather than building a parser
Quick Facts
CategoryAI Docs Agents
IndustryHorizontal
AccessAPI
Pricing
Freemium
StatusStandard · New
ListedAug 29, 2026
Popularity12%
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