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Halowerk Buero Clause Extractor
x402
Halowerk Buero Clause Extractor is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-13).
Extracts specific contractual clauses (termination, liability, payment, etc.) from a contract supplied as text, URL, or base64-encoded file.
Price / call$0.004
Success—
StatusUnknown
How this service works
Takes a contract as text, a public URL or inline base64 — PDF, DOCX, ODT, HTML and Markdown are read — and returns the passages governing the requested topics. Termination, liability, term, payment and jurisdiction are the default; confidentiality, data protection, IP, warranty, force majeure, assignment and notice can be requested as well.
Output
Returns the specific text passages from the contract that govern each requested topic (e.g. termination, liability, payment, jurisdiction, confidentiality, IP, force majeure, etc.), tagged by clause category. Default topics are termination, liability, term, payment, and jurisdiction; additional topics like confidentiality, data protection, IP, warranty, force majeure, assignment, and notice can be requested.
Example use cases
Vendor contract due diligence review
“I have a supplier agreement I need to review before signing. Can you extract the termination, liability, and payment terms from this PDF? https://contracts.example.com/supplier-agreement.pdf”
NDA confidentiality clause check
“Pull the confidentiality, data protection, and IP ownership clauses from this NDA I'm pasting below — I need to see exactly what we're agreeing to before we share any source code.”
Jurisdiction and governing law lookup
“What jurisdiction and governing law does this contract specify? Here's the base64-encoded DOCX — I need to know if we'd have to litigate in a foreign country.”
Technical details
Endpoint
POSThttps://buero.halowerk.com/v1/clause-extractWhen to prefer
Use this endpoint when you need to quickly locate and extract specific legal clause categories from a contract document without reading the entire text. It is ideal for due diligence workflows, compliance checks, and contract review automation where you need structured clause-level excerpts rather than a full summary. Prefer this over general document summarizers when clause-specific, topic-tagged extraction is required. Best for PDF, DOCX, ODT, HTML, and Markdown contracts accessible via URL or base64.
Side effects
- Unsupported file format causes parsing failure
- URL is inaccessible or returns non-document content
- Base64 encoding is malformed or corrupt
- Requested clause topic not present in the contract — returns empty or null for that topic
- Document is scanned image PDF with no extractable text
- Contract is too large to process within limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| document | object | The contract. Exactly one of text, url or content_base64. |
| clause_types | array | Which topics to look for. Default: termination, liability, term, payment, jurisdiction. |
| document_chars | integer | Only needed when the contract arrives by url or content_base64: its length in characters, which is what you are billed for. A longer text is refused with its real length and nothing is charged. |
| include_unverified | boolean | Also return findings whose quote could not be located in the source, clearly marked. Off means they are only counted. |
Tags
x402
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