Chess Notation Tools
chess-notation.x402tookit.com · 8 paid endpoints · listed 2026-11-02
Classify a chess time control (bullet, blitz, rapid, classical) from base minutes and increment, with estimated length.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | chess-notation.x402tookit.com/fen-board Render a FEN position as an 8x8 ASCII board (White at the bottom) plus a piece-by-square list. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/fen-parse Validate a chess FEN: syntax of all six fields, king and pawn counts, castling and en passant consistency, piece totals. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/material-count Material balance from a FEN: standard 1-3-3-5-9 point totals per side, difference and piece lists. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/pgn-headers Parse PGN tag pairs, check the Seven Tag Roster, result token and date format, and count the moves in the movetext. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/piece-moves Squares a knight, bishop, rook, queen, king or pawn reaches from a square on an empty board, with the count. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/square-distance Distance between two chess squares as king moves, rook moves, bishop moves and knight moves on an empty board. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/square-info File, rank, light or dark colour, 0-63 index, diagonals and mirror squares for a chess square like e4. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chess-notation.x402tookit.com/time-control Classify a chess time control (bullet, blitz, rapid, classical) from base minutes and increment, with estimated length. | $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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<a href="https://logicnodes.io/observatory/p/chess-notation.x402tookit.com"><img src="https://logicnodes.io/observatory/badge/chess-notation.x402tookit.com.svg" alt="x402 status"></a>
Claim it for free with
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/chess-notation.x402tookit.com