Calculate Weighted Average Life

fixed_income.weighted_average_life

ProductionBounded custom (Class B)Deterministicstrictfastv1.0.0

No network

Overview

Perform bounded weighted average life with explicit fixed-income inputs. All prices, cash flows, conventions, schedules, and factors are explicit.

Exact bounded fixed-income evidence avoids hidden market assumptions in fixed_income.weighted_average_life.

Reliability

For fixed_income.weighted_average_life, DECIMAL_INVALID means a decimal is malformed. FIXED_INCOME_INPUT_INVALID means shape, ordering, profile, or domain is invalid. ZERO_DENOMINATOR means a required divisor is zero. ITEM_LIMIT_EXCEEDED means a collection exceeds its published bound.

Context footprint

The compact receipt replaces repeated prompt arithmetic. A successful call costs 1 execution credit.

When to use it

When principal cash flows and times must become weighted-average life in a chosen time unit.

When you need Macaulay or modified duration rather than principal-weighted life.

Scope

Note

Perform bounded weighted average life with explicit fixed-income inputs

Non-goals

Does not source curves, rates, prices, schedules, or market data.
Does not infer settlement, accounting, tax, or regulatory policy.

Properties

IdempotentRetry safeStreaming supportedFile input supportedRequires external service

Capabilities

analysismath

Cost & billing

Flat rate per invocation

MetercallsBillable onsuccessCost per call1 credit

File handling

Accepts file_refProduces file_refMax input64 KB

How we handle your data

Sensitive input, safe output

What this means

This skill may receive sensitive content, but it does not target sensitive data and returns only a structured non-sensitive result.

Squillify guarantees

Runs inside Squillify
This skill runs inside Squillify.
Payloads are not sent to an external service by this skill.
Squillify does not permanently store submitted payloads.
Telemetry records metadata only, not submitted content.
Submitted payloads are not used for training.
Submitted payloads are not reviewed by humans.
This skill does not target sensitive data.
The response does not contain submitted content.

Your responsibility

Squillify does not determine whether submitted content is sensitive. Your application is responsible for deciding what data it is allowed to submit. Your application is responsible for securing the response.

Read the Microskill Data Handling Policy

Input schema

Field	Type	Required	Description
principalCashFlows	array	Yes	Closed bounded principalCashFlows field documented by the canonical contract.
times	array	Yes	Closed bounded times field documented by the canonical contract.
timeUnit	string	Yes	Closed bounded timeUnit field documented by the canonical contract.

Output schema

Field	Type	Required	Description
weightedAverageLife	string	Yes	Output receipt field weightedAverageLife produced under the canonical bounded fixed-income contract.
totalPrincipal	string	Yes	Output receipt field totalPrincipal produced under the canonical bounded fixed-income contract.
count	integer	Yes	Output receipt field count produced under the canonical bounded fixed-income contract.
timeUnit	string	Yes	Output receipt field timeUnit produced under the canonical bounded fixed-income contract.

API contract

POST /v1/execute

curl

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"fixed_income.weighted_average_life","input":{"principalCashFlows":["100","100"],"times":["1","3"],"timeUnit":"YEARS"}}'

Integrations

TypeScript SDK

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("fixed_income.weighted_average_life", {"timeUnit":"YEARS","principalCashFlows":["100","100"],"times":["1","3"]});

Errors

Code	HTTP	Retryable	Description
VALIDATION_ERROR	400	No	The request payload failed schema validation.
UNAUTHORIZED	401	No	Missing or invalid API key.
SKILL_NOT_ACCESSIBLE	403	No	The API key is not granted access to this skill.
SKILL_NOT_AVAILABLE_FOR_PLAN	403	No	This skill is not included in your current plan.
PLAN_ELIGIBILITY_UNAVAILABLE	503	Yes	Plan eligibility could not be decided. Retry after backoff.
SKILL_NOT_FOUND	404	No	The requested skill or version does not exist.
TENANT_RATE_LIMITED	429	Yes	Request rate limit exceeded. Retry after backoff.
QUOTA_EXCEEDED	429	Yes	Plan quota exhausted. Retryable once the quota period resets.
EXECUTION_TIMEOUT	504	Yes	Execution exceeded the allowed time budget.
DECIMAL_INVALID	400	No	The request payload failed this skill's input validation.
FIXED_INCOME_INPUT_INVALID	400	No	The request payload failed this skill's input validation.
ZERO_DENOMINATOR	400	No	The request payload failed this skill's input validation.
ITEM_LIMIT_EXCEEDED	429	No	A size, quota, rate, or time limit was exceeded.

Other limits

Limit	Value
Recommended inline bytes	32 KiB

Limitations

Does not source curves, rates, prices, schedules, or market data.
Does not infer settlement, accounting, tax, or regulatory policy.
Market-data sourcing or convention inference.

How to call

POST /v1/execute (requires authentication)

Request bodyjson

{
  "skillKey": "fixed_income.weighted_average_life",
  "input": {
    "timeUnit": "YEARS",
    "principalCashFlows": [
      "100",
      "100"
    ],
    "times": [
      "1",
      "3"
    ]
  }
}

Examples

Verified contract vector

Inputjson

{
  "timeUnit": "YEARS",
  "principalCashFlows": [
    "100",
    "100"
  ],
  "times": [
    "1",
    "3"
  ]
}

Expected outputjson

{
  "count": 2,
  "timeUnit": "YEARS",
  "weightedAverageLife": "2",
  "totalPrincipal": "200"
}

Tip

Deterministic W17/W19 vector.

Repeated deterministic vector