Discover / physics-calc.x402tookit.com

Physics Calculators

■ Challenge detected

Blackbody radiation: Wien peak wavelength and frequency, Stefan-Boltzmann power per area, and total power for an area or sphere.

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

Endpoint

curl -i https://physics-calc.x402tookit.com/blackbody
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
12 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://physics-calc.x402tookit.com

  • GET/blackbodyNo price listedBlackbody radiation: Wien peak wavelength and frequency, Stefan-Boltzmann power per area, and total power for an area or sphere.
  • GET/inclineNo price listedBlock on an incline: weight components, normal force, static friction limit, whether it slips, acceleration and slide time.
  • GET/relativityNo price listedSpecial relativity: Lorentz factor, time dilation, length contraction, total and kinetic energy and momentum at a given speed.
  • GET/kinematicsNo price listedConstant-acceleration motion: give any three of displacement, start speed, end speed, acceleration, time; get the other two.
  • GET/orbitNo price listedCircular orbit speed, escape speed and period at an altitude or radius around the Sun, a planet, the Moon or a custom mass.
  • GET/snellNo price listedSnell's law: refracted angle between two media (names or indices), critical angle and total internal reflection check.
  • GET/oscillatorNo price listedPeriod and frequency of a simple pendulum (exact for large swings) or a mass on a spring.
  • GET/work-energyNo price listedWork (force x distance x cos angle), kinetic and potential energy, and power, with joule, kWh, calorie and horsepower units.
  • GET/collision-1dNo price listedHead-on collision of two masses: velocities after impact, momentum and kinetic energy lost, elastic to perfectly inelastic.
  • GET/wave-dopplerNo price listedWave speed, frequency and wavelength, plus the Doppler-shifted frequency for sound (moving source or observer) or light.
  • GET/projectileNo price listedProjectile motion without drag: range, max height, flight time, impact speed and angle from launch speed, angle and height.
  • GET/lens-mirrorNo price listedThin lens or mirror equation: give two of focal length, object and image distance, get the third plus magnification.

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

Showing 12 of 12 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/physics-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 detected402704ms

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 Physics Calculators?

Its listed price is $0.02.

What payment terms does Physics 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 Physics Calculators listed?

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

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