Operations
Nightly at 3:00amNightly data quality checks
Runs your invariants against production every night and emails the on-call analyst which rows broke and since when.
5,000 free credits to start.
The prompt
The workflow prompt
Copy this prompt into a new workflow, connect the listed integrations, and configure its trigger.
Every night at 3am, run our data quality checks against the production Postgres replica.Check that no order has a null currency, every account's plan is one of the four values in our enum, no invoice has a total below zero, every user row has a matching account, and the events table has received rows in each of the last 24 hours.For every failing check, find how many rows are affected, identify the earliest affected row and its timestamp, and look at what changed upstream around that time.Email the on-call analyst through Resend with only the failures, the affected row counts, the first occurrence, and the query you ran.When everything passes, send nothing.
Trigger
What starts this workflow
Runs on a schedule. Describe the cadence in plain words and Helios writes the cron expression. Schedules run in UTC.
Example output
What you get back
Every run keeps its full transcript. The steps the agent took, each tool call, and the result.
2 checks failed
- `orders.currency` null on 41 rows since 02:10
- `accounts.plan` has 3 values outside the enum
- 12 checks passed
New to Helios? Start with Run your first workflow.
Guides
Set it up step by step
10 min
Connect a database
Give a workflow Postgres, MySQL, or ClickHouse. It reads the schema, writes real SQL, and checks the results in its own sandbox.
10 min
Attach an MCP server
Point Helios at a remote MCP server, choose which of its tools workflows may call, and use Helios itself over MCP from other clients.
8 min
Use secrets and variables
Keep the values a task needs out of the prompt. Variables hold configuration. Secrets hold credentials. The agent never sees a secret in plain text.
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Run Nightly data quality checks on your tools.
Connect the integrations, paste the prompt, and pick the trigger.