Grades & Study Calc
grades-calc.x402tookit.com · 8 paid endpoints · listed 2026-11-02
Pages per day to finish a reading assignment by the due date, daily minutes at your pace, and a day-by-day page schedule.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | grades-calc.x402tookit.com/final-grade-needed Score needed on a final exam (or any remaining work) to reach a target class grade, from current grade and its weight. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/gpa GPA on the 4.0 scale from letter grades and credits, with optional honors (+0.5) and AP/IB (+1.0) weighting. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/grade-curve Curve test scores by adding points, scaling so the top score is 100, or the square-root method, with before and after averages. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/percent-to-letter Letter grade and 4.0 GPA points for a percentage on the common US scale, with plus/minus, and points to the next grade. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/percentile-rank Percentile rank of a score in a class list (mean-rank method), with rank from the top, mean, median and z-score. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/reading-planner Pages per day to finish a reading assignment by the due date, daily minutes at your pace, and a day-by-day page schedule. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/study-time Weekly study hours from credit hours using the 2 to 3 hours per credit rule, with total weekly workload and a daily plan. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | grades-calc.x402tookit.com/weighted-grade Overall class grade from categories or assignments with scores, maximums and weights, normalizing weights that do not total 100. | $0.02 | Polygon, Arbitrum, Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| Not checked yet. | ||||
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
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x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/grades-calc.x402tookit.com