REST API for line items, rollups, and anomalies. Webhooks push anomaly alerts to your systems. Integrate cloud and AI cost data into dashboards, ticketing, or automation.
StackSpend provides a cost monitoring API and webhooks for line items, rollups, and anomaly alerts. Use it for API cost monitoring and API billing analytics across OpenAI, Anthropic, Twilio, and other usage-based providers. Integrate cost data into dashboards, ticketing systems, and internal workflows.
Why this spend is hard to control
Cost data lives inside yet another dashboard. Your team already uses internal tools, ticketing systems, and operational dashboards. Manually copying numbers is slow and error-prone.
Anomaly alerts arrive in Slack or email, but your on-call flow lives in PagerDuty. Your CFO wants cost data in the board deck. Your eng team wants spend in Linear. Nothing talks to each other.
Building custom integrations means scraping screens or waiting for CSVs. You need programmatic access — pull when you need it, push when something spikes.
What StackSpend shows
StackSpend REST API provides line items, daily rollups, and anomaly alerts. Create an API key in Settings. Use scoped permissions (e.g. read-only for reporting). Download the Postman collection to get started.
Webhooks deliver anomaly.created events to your endpoint via HTTP POST. Configure a URL and secret in Settings → Webhooks. When we detect a spend spike, we POST the payload. You route it to PagerDuty, a Slack bot, or your internal dashboard.
Combine API polling for dashboards and reports with webhooks for real-time anomaly alerts. No more manual aggregation or delayed discovery.
What we track
Common cost triggers
Real scenarios that cause spend to spike — often silently.
An anomaly fires in PagerDuty hours late because the only integration polls manually
The CFO asks for total AI spend and the answer requires pulling from four separate dashboards
A spend spike triggers a webhook that automatically opens an incident in Linear before anyone notices
Weekly cost reports require manual CSV exports from every provider before they can be assembled
Provider billing APIs (direct integration per provider)
Native tools are built for investigation. StackSpend is built for prevention.
Provider billing APIs (direct integration per provider)
- Each provider requires a separate integration with a different schema and auth model
- No normalized cost data — comparing AWS and OpenAI spend requires custom mapping
- Push notifications require custom polling or native webhook setup for each provider separately
- CSV exports are the only option for reporting from most provider billing portals
StackSpend
- Single API for all provider cost data with a consistent normalized schema
- One anomaly.created webhook covers all providers — one integration for every alert
- Line items, rollups, and anomalies available programmatically with scoped API keys
- No more manual CSV exports — pull or push based on your workflow
Who this is for
Teams that need cost data inside internal dashboards, ticketing systems, or incident workflows.
Engineers who want to pull line items and rollups programmatically instead of exporting CSVs.
Organizations routing anomaly alerts into PagerDuty, Slack bots, or custom automation.
What you get when you connect
Line items, rollups, and anomaly endpoints with scoped API keys.
Webhook delivery for anomaly.created events into your own systems.
Postman collection and simple HTTP endpoints for fast implementation.
Pull for dashboards, push for incidents, no CSV handoffs required.
Frequently asked
Which providers does StackSpend support for cost monitoring api & webhooks?
How is StackSpend different from native billing dashboards for cost monitoring api & webhooks?
How long does cost monitoring api & webhooks setup take?
Can I get alerts when cost monitoring api & webhooks costs spike?
Start seeing your full stack spend.
Connect cost monitoring api & webhooks in under 5 minutes. 90 days of history loaded automatically. Daily signals from day one.