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PayAI Infrastructure Cost Diff Estimator
x402
PayAI Infrastructure Cost Diff Estimator is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Estimates the monthly cost delta of an infrastructure change by comparing a baseline and proposed config (or Terraform plan), returning before/after totals, per-resource line items, FinOps findings, and a budget verdict.
Price / call$0.05
Success—
StatusUnknown
How this service works
Estimate the monthly cost DELTA of an infrastructure change before you apply it: pass a Terraform plan (its resource changes) or a baseline and a proposed config and get total before, total after, the monthly delta, per-resource added / removed / modified line items, FinOps findings and a budget verdict (pass, caution, block). AWS and Azure common resources. Cost estimate, not a bill.
Output
Returns a structured cost comparison including: total monthly cost before the change, total monthly cost after, the net monthly delta (positive or negative), per-resource line items categorized as added, removed, or modified, FinOps findings highlighting potential waste or misconfigurations, and a budget verdict of pass, caution, or block. This is a cost estimate, not an actual bill.
Example use cases
Pre-deployment Terraform cost gate
“I'm about to run terraform apply on a plan that adds an RDS db.r5.large instance and a new NAT gateway — can you estimate the monthly cost delta and tell me if it's a pass, caution, or block against a $1,000/month budget?”
Cloud migration cost comparison
“We're migrating from Azure Standard_D4s_v3 VMs to AWS m5.xlarge instances — what's the monthly cost difference between the baseline Azure config and the proposed AWS config, and are there any FinOps concerns I should know about?”
Autoscaling group resize impact
“I want to scale our autoscaling group from 3 to 8 t3.large nodes — what's the monthly cost before and after, what's the delta, and will this flag any budget warnings?”
Technical details
Endpoint
POSThttps://payai.agentstools.dev/cost/diffWhen to prefer
Choose this endpoint when you need a pre-flight cost impact analysis of an infrastructure change before applying it, especially in CI/CD pipelines where automated budget gating (pass/caution/block) is needed. Prefer this over generic cloud pricing calculators when you have a Terraform plan diff or explicit before/after resource configs and need FinOps-aware per-resource line items rather than manual price lookups. Best suited for AWS and Azure common resources.
Side effects
- Unsupported resource types (non-AWS/Azure or niche services) may be omitted from estimates
- Incomplete or malformed Terraform plan JSON may cause parsing errors
- Missing baseline config when no Terraform plan is provided results in incomplete delta
- Reserved instance or savings plan discounts not accounted for, leading to overstated costs
- Rate limit or payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| usage | object | Optional usage hints for usage-based items |
| format | string | Config format for baseline/proposed, or auto |
| region | string | Cloud region for pricing (default us-east-1) |
| baseline | string | Baseline config text (use with proposed instead of plan_json) |
| proposed | string | Proposed config text (use with baseline) |
| plan_json | string | A terraform plan JSON with resource_changes (before/after) — the one-file diff input |
| budget_monthly | number | Optional monthly USD budget for the verdict |
Tags
x402
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