🔗

AI Agent Dependency / Third-Party API Cost Calculator

Estimate the monthly cost of all third-party APIs your AI agent calls: search, maps, CRM, payment, weather, email, SMS, storage, and custom integrations. Includes retries, failures, and review overhead.

Scenario presets

Dependency economics

API category preset

Select a preset to load typical per-call cost, failure, and retry defaults.

Monthly agent tasks Distinct APIs per task Calls per API on average Cost per API call ($) Failure rate (%) Retry rate (% of failures) Retry cost multiplier Human review rate (%) Review hourly cost ($) Minutes to review one task Setup hours Setup hourly rate ($) Maintenance hours / month Projection (months)

Estimates are directional. Last updated: 2026-07-10. See notes.

Monthly API calls

—

Monthly API cost

—

Cost per task

—

Cost per 1k tasks

—

Failed calls / mo

—

Retry calls / mo

—

Human review hours / mo

—

All-in monthly cost

—

Setup cost

—

Projected 12-month cost

—

Monthly cost breakdown

Cost line	Monthly	Share
Base API calls	—	—
Retry cost	—	—
Human review labor	—	—
Maintenance	—	—

Verdict

—

Frequently asked questions

What counts as a third-party API dependency?

Any external SaaS or data API the agent invokes beyond the base LLM: web search, maps/geocoding, weather/market data, CRM actions, payment/billing, email/SMS, object storage, and custom partner or internal APIs.

Does this include LLM token cost?

No. This calculator focuses on the surrounding API surface area. Pair it with the Agent API Pricing Comparator, Workflow Cost Calculator, or Tool Call Cost Calculator for full agent run economics.

How are failure and retry costs calculated?

Failed API calls still incur the per-call cost. The retry rate determines what share of failures are retried, and the retry multiplier captures retries that hit pricier endpoints or require multiple attempts.

Why include human review cost?

External API failures and ambiguous responses often need a human to inspect, correct, or reconcile. The calculator estimates review labor based on review rate, minutes per task, and hourly cost.

How can I reduce dependency spend?

Cache lookup results, deduplicate queries, batch API calls, choose cheaper tiers for low-risk lookups, negotiate volume discounts, and collapse multiple calls into a single richer endpoint where possible.

Tool Call Cost Calc → MCP Cost Calc → API Pricing Comparator → Agent Output Value Calc →

Third-party API costs are based on typical public SaaS/API pricing and tiered rates. Replace defaults with your actual provider rates and negotiated discounts.