DOCUMENT OPS
Verify uploaded contract hashes and quarantine tampered PDFs (Dropbox)
Watches a Dropbox contracts folder, recomputes each new PDF's SHA-256 against the registered baseline hash.
How it runs
The automated pipeline, trigger to output.
- TriggerNew PDF in Dropbox /contracts/inboundDropbox
- ActionDownload file and compute SHA-256 digestShell
- ActionLook up registered baseline hash by contract IDPostgres
- LogicCompare computed hash vs. baseline
- ActionMove to /verified or /quarantine in DropboxDropbox
- OutputAlert deal desk on mismatch in SlackSlack
What it does
Every time a signed contract lands in your Dropbox intake folder, this workflow recomputes its SHA-256 digest and compares it to the hash you registered when the document was originally sent for signature. Files that match pass silently; files whose bytes changed get pulled into a quarantine folder and flagged to your team so a tampered or corrupted PDF never reaches the archive of record.
When to use it
Run this when counterparties return signed PDFs to a shared Dropbox folder and you need a deterministic, byte-level integrity check before the document is treated as final. Ideal for legal ops and deal desks that maintain a hash registry of outbound contracts.
How it works
- 1A new PDF appears in the Dropbox `/contracts/inbound` folder and fires the trigger.
- 2The file is downloaded and its SHA-256 digest is computed in a shell step.
- 3The workflow looks up the expected baseline hash for that contract ID in the Postgres registry.
- 4A logic branch compares computed vs. expected. On match, the file is moved to `/contracts/verified`.
- 5On mismatch, the file is moved to `/contracts/quarantine` and a Slack alert names the file, both hashes, and the deal owner.
Set it up
What you configure once, before turning it on.
- 1Connect DropboxFiles and folders.
- 2Connect PostgresAny Postgres URL — query, write, migrate.
- 3Connect ShellRun sandboxed commands inside the workspace.
- 4Connect SlackChannels, DMs, threads, mentions.
- 5Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 6Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 7Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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