Forecast cloud cost commitment exposure

Forecast cloud commitment waste, uncovered on-demand cost, savings distribution, probability of negative savings, and CVaR loss over aligned demand paths.

What it's for

Shows the board how much a cloud commitment could save, waste, or leave exposed across demand futures instead of presenting one utilization average.

What you give it

Inputs split into evidence read from your connected systems, calibration your team owns, and numerical controls that affect precision but never the result's meaning.

Field Type Role Required
commitment_unit_cost number > 0 Your calibration Yes
committed_capacity_per_period array of number ≥ 1 item Evidence Yes
max_detail_rows integer ≥ 1, ≤ 500 Numerical control Optional
maximum_negative_savings_probability number ≥ 0, ≤ 1 Your calibration Optional
on_demand_unit_cost number > 0 Your calibration Yes
scenarios array of objects (3 fields) ≥ 2 items Evidence Yes
tail_probability number ≥ 0.001, ≤ 0.5 Your calibration Optional

Each scenarios record

Field Type Required
id string (non-empty) Yes
probability number (≥ 0, ≤ 1) Yes
usage_units array of number (≥ 1 item) Yes
Example input
{
  "commitment_unit_cost": 0.6,
  "committed_capacity_per_period": [
    100,
    100,
    100,
    100
  ],
  "on_demand_unit_cost": 1,
  "scenarios": [
    {
      "id": "low",
      "probability": 0.2,
      "usage_units": [
        50,
        60,
        70,
        80
      ]
    },
    {
      "id": "base",
      "probability": 0.5,
      "usage_units": [
        90,
        100,
        110,
        120
      ]
    },
    {
      "id": "high",
      "probability": 0.3,
      "usage_units": [
        120,
        140,
        150,
        160
      ]
    }
  ],
  "tail_probability": 0.1
}

What you get back

This is the actual output of running the example above — computed by the same function the platform calls, not an illustration.

Example output
{
  "assumptions": [
    "Usage paths preserve workload, region, service, family, tenancy, and eligibility constraints that determine whether committed capacity can actually offset usage.",
    "Rates include effective discounts, fees, credits, taxes, term timing, exchange, and opportunity cost consistently; the on-demand path is a comparable counterfactual.",
    "The forecast is conditional on represented joint demand paths and excludes resale, contract modification, and provider behavior unless encoded explicitly."
  ],
  "configuration": {
    "commitment_unit_cost": 0.6,
    "maximum_negative_savings_probability": 0.2,
    "on_demand_unit_cost": 1,
    "tail_probability": 0.1
  },
  "decision": "cloud_commitment_exposure_within_tolerance",
  "method": "cloud_commitment_joint_path_exposure_v1",
  "scenario_diagnostics": [
    {
      "committed_bill": 240,
      "on_demand_counterfactual": 260,
      "probability": 0.2,
      "savings": 20,
      "scenario_id": "low",
      "uncovered_on_demand_cost": 0,
      "unused_commitment_cost": 84,
      "utilization_rate": 0.65
    },
    {
      "committed_bill": 270,
      "on_demand_counterfactual": 420,
      "probability": 0.5,
      "savings": 150,
      "scenario_id": "base",
      "uncovered_on_demand_cost": 30,
      "unused_commitment_cost": 6,
      "utilization_rate": 0.975
    },
    {
      "committed_bill": 410,
      "on_demand_counterfactual": 570,
      "probability": 0.3,
      "savings": 160,
      "scenario_id": "high",
      "uncovered_on_demand_cost": 170,
      "unused_commitment_cost": 0,
      "utilization_rate": 1

Truncated for display — the full payload is 59 lines.

How it works

Forecasting & survival — Estimate when something completes or fails, with censoring and unresolved work handled honestly rather than dropped.

  1. 1 Freeze the eligible service/region/family boundary, commitment capacity schedule and effective rate, comparable on-demand counterfactual, horizon, and aligned joint usage paths.
  2. 2 For each path price paid commitment, unused capacity, uncovered on-demand usage, counterfactual cost, utilization, and savings without netting incompatible workloads.
  3. 3 Aggregate expected and tail savings, expose negative-savings probability and worst paths, then stress portability, exchange, fees, credits, and demand before a purchase decision.

Before you trust it

Every tool in the catalog ships with the conditions under which its answer is meaningful — and the conditions under which it should abstain instead of guessing.

Assumptions & guardrails

  • Training examples precede their outcomes, censoring and unresolved work are represented, and deployment populations remain comparable to validation cohorts.
  • Committed capacity is fungible only where the contract permits and every usage path preserves provider, service, region, family, platform, tenancy, and timing eligibility.
  • A predictive interval or risk estimate is not a deadline promise, causal explanation, or individual-performance judgment.
  • Modeled savings are conditional on demand and contract assumptions; they are not guaranteed invoice savings and must not treat incompatible usage as fungible.

Minimum evidence

  • committed_capacity_per_period: at least 1 rows/items
  • scenarios: at least 2 rows/items
  • commitment_unit_cost: required and organization-defined
  • on_demand_unit_cost: required and organization-defined

How to validate it

Use chronological train/calibration/test windows, compare proper scores and decision value with a simple baseline, and recalibrate only from outcomes resolved after prediction time.

Calibrating it to your org

Same for everyone

The mathematical kernel, validation rules, method version, and JSON output semantics are organization-independent; no tenant-trained coefficients or company benchmark is embedded in the function.

Specific to you

  • eligibility-preserving joint usage paths aligned to one commitment capacity schedule and comparable on-demand counterfactual
  • fungibility/eligibility, effective rates, term/horizon, demand scenarios/probabilities, exchange, fees/taxes/credits, opportunity cost, tail level, and downside tolerance

Calibration workflow

  1. 1 Define the management decision, target outcome, aggregate unit, privacy boundary, cadence, and prediction/intervention horizon for this organization.
  2. 2 Build a tenant-scoped historical cohort using only information available before each prediction or decision; preserve zero periods, censoring, assignment probabilities, and unresolved outcomes when the method requires them.
  3. 3 Estimate statistical parameters on training history, but obtain costs, utilities, risk tolerance, practical-effect thresholds, capacity, and policy constraints from accountable decision owners.
  4. 4 Validate on later time windows or held-out aggregate units at the deployment grain, against a simple baseline and the function-specific validation strategy.
  5. 5 Deploy only if the returned decision clears evidence, overlap, calibration, robustness, and guardrail checks; warning, unsupported, schema-gap, and fallback decisions are abstentions.
  6. 6 Monitor realized outcomes, data drift, coverage, and decision regret; recalibrate at a governed cadence or after a detected regime/definition change, never merely because a stakeholder dislikes the result.

Call it from your AI

You don't wire up 388 tools in your MCP client. The GitRevio MCP server exposes 18 tools, three of which let an agent search the catalog, read a tool's schema, and run it — so the assistant finds this one on its own.

gitrevio_capabilities_search
  { "q": "forecast cloud commitment waste uncovered ondemand" }
  → finds "forecast_cloud_cost_commitment_exposure"

gitrevio_capability_describe
  { "capability_id": "forecast_cloud_cost_commitment_exposure" }
  → returns the input schema and agent guidance shown on this page

gitrevio_capability_run
  { "capability_id": "forecast_cloud_cost_commitment_exposure", "arguments": { ... } }
  → returns the result shown above

Works in Claude Desktop, Claude Code, Cursor, Cline, Continue.dev, Goose and Aider. See the MCP server.

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