Discover / chemistry-calc.x402tookit.com

Chemistry Calculators

■ Challenge detected

Bond type between two elements from the Pauling electronegativity difference: nonpolar covalent, polar covalent or ionic.

Listed price
$0.02
Challenge detected
1 of the last check
Median response
1147 ms
Last checked
21 Oct, 00:26 UTC
In our index since
21 Oct 2026

Endpoint

curl -i https://chemistry-calc.x402tookit.com/bond-polarity
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
11 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://chemistry-calc.x402tookit.com

  • GET/limiting-reagentNo price listedLimiting reagent, theoretical yield and leftover excess for a balanced reaction from reactant masses; optional percent yield.
  • GET/molarityNo price listedMolarity of a solution from solute grams and volume, or the grams of solute needed to make a target molarity and volume.
  • GET/half-lifeNo price listedRadioactive decay: remaining fraction after a time, time to reach a fraction (carbon dating), decay constant and mean life.
  • GET/element-lookupNo price listedPeriodic table lookup by symbol, name or atomic number: weight, configuration, electronegativity, melting and boiling points.
  • GET/empirical-formulaNo price listedEmpirical formula from percent or gram composition by element, and the molecular formula if you give the molar mass.
  • GET/bond-polarityNo price listedBond type between two elements from the Pauling electronegativity difference: nonpolar covalent, polar covalent or ionic.
  • GET/ideal-gasNo price listedIdeal gas law PV = nRT: give any three of pressure, volume, moles and temperature and solve the fourth, in common units.
  • GET/molar-massNo price listedMolar mass and percent composition by element for a formula, including brackets and hydrates such as CuSO4.5H2O.
  • GET/ph-calcNo price listedpH and pOH for a strong or weak acid or base, a hydrogen-ion concentration, or a buffer (Henderson-Hasselbalch).
  • GET/mole-convertNo price listedConvert between grams, moles and molecule counts for a chemical formula using Avogadro's number.
  • GET/dilutionNo price listedDilution equation C1 x V1 = C2 x V2: give any three values and get the fourth, plus solvent to add and the dilution factor.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 11 of 11 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/chemistry-calc.x402tookit.com

Recent checks

21 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.21 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
21 Oct, 00:26 UTCChallenge detected4021147ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 00:26 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Chemistry Calculators?

Its listed price is $0.02.

What payment terms does Chemistry Calculators advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Chemistry Calculators listed?

In x402 Bazaar. Superstables first indexed it on 21 Oct 2026.

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