INVOICE PROCESSING
Detect Silent Subscription Price Hikes in Vendor Invoice Emails
Watches your invoices inbox, extracts the line-item totals from each incoming vendor invoice, compares them against the last invoice from the same vendor.
How it runs
The automated pipeline, trigger to output.
- TriggerNew email in invoices inboxGmail
- ActionExtract vendor, total, and periodOpenAI
- ActionLook up last invoice total for vendorPostgres
- LogicContinue only if increase exceeds threshold
- ActionStore new total as latest baselinePostgres
- OutputPost price-hike alert to finance channelSlack
What it does
Vendors raise prices quietly between billing cycles and bury the change in a PDF. This workflow reads every invoice that lands in your billing inbox, parses the amount and vendor, and checks it against the previous invoice from that same vendor stored in Postgres. If the new total is higher with no corresponding usage change, it posts an alert showing the old price, new price, and the delta as a dollar amount and percentage.
When to use it
Run this if you pay recurring vendors by emailed invoice (SaaS tools, hosting, agencies) and want a tripwire on creeping renewal prices before finance pays them on autopilot.
How it works
- 1A new email arrives in the labeled invoices inbox.
- 2An OpenAI extraction step pulls vendor name, invoice total, and billing period from the body and attachment.
- 3The flow queries Postgres for the last recorded total from that vendor.
- 4A logic step computes the delta and continues only if the increase exceeds a set threshold.
- 5The new total is written back to Postgres as the latest baseline.
- 6A Slack message posts the vendor, old vs new amount, and percent change to the finance channel.
Set it up
What you configure once, before turning it on.
- 1Connect GmailRead, draft, send, label.
- 2Connect OpenAIModels, embeddings, files.
- 3Connect PostgresAny Postgres URL — query, write, migrate.
- 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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Run it inside a business
This workflow drops into a full company template. Import the org, and this is one of the playbooks its agents run.
Run this workflow in your colony.
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