Batchsign provides server-side, Adobe AATL-compliant PDF signing via API. Finance teams, law firms, and compliance departments can sign approval workflows, contracts, and regulatory filings at scale — with a tamper-proof audit receipt for each document.
# Response for one document in batch { "document_id": "doc-2025-0892", "status": "signed", "certificate": "AATL · CN=Cloak Signing CA", "signed_url": "https://…/doc-2025-0892.pdf", "receipt": { "operation": "BATCH_SIGN", "actor": "finance-agent@acme.com", "doc_hash": "sha256:8b3f…", "cert_serial": "0x1A2B3C4D", "timestamp": "2025-06-14T10:05:33Z", "signature": "eyJhbGciOiJFUzI1NiJ9…" } }
If you sign more than 10 PDFs a week, manual signing is a bottleneck. Batchsign eliminates it.
Sign approval workflows, payment authorisations, and remittance advice at scale. Integrate with your ERP or AP system via API. Every signed document gets a receipt your auditors can verify offline.
Automate signing of NDAs, engagement letters, terms, and settlement agreements. The AATL certificate ensures signatures are recognised in Adobe Reader worldwide — no plugin required for verification.
Sign regulatory filings, compliance attestations, and board resolutions at the moment of submission. The receipt proves who signed what and when — in a format your regulator can verify without calling you.
The Adobe Approved Trust List (AATL) is the certificate authority list that Adobe Reader trusts by default. A document signed with an AATL certificate displays a blue "Signature valid" badge in Adobe Reader — with no extra configuration needed by the recipient.
Batchsign uses AATL-compliant certificates for all signatures. On Enterprise plans, you can use a dedicated AATL certificate in your organisation's name — so the signing identity in Adobe Reader shows your company, not a generic CA.
No SDK lock-in. One REST call per batch. AI agents can trigger signing too.
POST a PDF or array of PDFs to /sign/batch. Get signed PDFs and receipts back in one response. Works from any language or system.
AI agents call sign_pdf via MCP. Human-authorized policy controls which documents the agent can sign, what cert to use, and how many per session.
Trigger Batchsign from any workflow automation tool using the REST API. Sign documents on a schedule, on approval, or when a record is created in your CRM or ERP.
10 free signatures per month on any account. Pay for volume, not seats.
500 signatures / month
5,000 signatures + audit receipts
Unlimited · dedicated AATL cert
Free account. 10 signatures included. Full REST and MCP access from day one.
Create free account →Governed by the OMMAU Charter — humans authorize, agents execute, receipts prove it.