ForHosting KIT
Everything you need.
One Kit.
Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.
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The full catalog
Search or filter by category. Every capability is its own endpoint with a published price.
⚙️ Developer UtilitiesFree
Thue-Morse sequence bit
parity of ones in binary of n
A
POST /numth/thue-morse$0.002⚙️ Developer UtilitiesFree
Lower Wythoff sequence calculator
find the n-th term
F
POST /numth/wythoff-lower$0.002⚙️ Developer UtilitiesFree
Absolute value inequality solver
|ax+b| ⊙ c in interval notation
P
POST /algebra/absolute-value-inequality$0.002⚙️ Developer UtilitiesFree
Cubic inequality solver
roots, sign chart, and interval notation
B
POST /algebra/cubic-inequality$0.002⚙️ Developer UtilitiesFree
2x2 system elimination method calculator
exact solution
F
POST /algebra/system-2x2-elimination$0.002⚙️ Developer UtilitiesFree
Line and parabola intersection
0, 1 or 2 points by substitution
A
POST /algebra/system-nonlinear-line-parabola$0.002⚙️ Developer UtilitiesFree
Two-variable linear inequality calculator
boundary, style, half-plane
S
POST /algebra/two-variable-inequality$0.002⚙️ Developer UtilitiesFree
Factor difference of cubes calculator
exact binomial and trinomial
B
POST /algebra/factor-difference-of-cubes$0.002⚙️ Developer UtilitiesFree
Homogeneous linear system 2x2 calculator
parametric solution
K
POST /algebra/homogeneous-system-2x2$0.002⚙️ Developer UtilitiesFree
Polynomial composition calculator
f(g(x)) expanded, free
S
POST /algebra/polynomial-composition$0.002⚙️ Developer UtilitiesFree
Polynomial from roots calculator
expand factors to coefficients
P
POST /algebra/polynomial-from-roots$0.002⚙️ Developer UtilitiesFree
Polynomial subtraction calculator
combine like terms
F
POST /algebra/polynomial-subtract$0.002⚙️ Developer UtilitiesFree
FOIL method calculator
multiply two binomials step by step
K
POST /algebra/foil-method$0.002⚙️ Developer UtilitiesFree
Inverse function calculator
swap variables and solve
B
POST /algebra/function-inverse$0.002⚙️ Developer UtilitiesFree
Polynomial coefficients extractor
parse expression to coefficient list
S
POST /algebra/polynomial-coefficients$0.002⚙️ Developer UtilitiesFree
Polynomial degree calculator
highest power of a polynomial, free
A
POST /algebra/polynomial-degree$0.002⚙️ Developer UtilitiesFree
Polynomial standard form calculator
combine and order terms
F
POST /algebra/polynomial-standard-form$0.002⚙️ Developer UtilitiesFree
Difference quotient calculator
simplify [f(x+h)−f(x)]/h, free
A
POST /algebra/difference-quotient$0.002⚙️ Developer UtilitiesFree
Function evaluation calculator
f(x) at a point, domain-aware
P
POST /algebra/function-evaluate$0.002⚙️ Developer UtilitiesFree
Even or Odd Function Checker
Test Polynomial Symmetry
F
POST /algebra/function-even-odd$0.002⚙️ Developer UtilitiesFree
Function reflection calculator
reflect across the x-axis or y-axis
B
POST /algebra/function-reflection$0.002⚙️ Developer UtilitiesFree
Vertical asymptote calculator for rational functions
K
POST /algebra/rational-vertical-asymptote$0.002⚙️ Developer UtilitiesFree
Square root function domain calculator
√(ax+b) interval, free
S
POST /algebra/square-root-function-domain$0.002⚙️ Developer UtilitiesFree
Common logarithm calculator
calculate log base 10
F
POST /algebra/common-log$0.002⚙️ Developer UtilitiesFree
Doubling Time Calculator
Calculate Growth Time
B
POST /algebra/doubling-time$0.002⚙️ Developer UtilitiesFree
Function iteration calculator
generate an orbit from a starting value
K
POST /algebra/function-iteration$0.002⚙️ Developer UtilitiesFree
Logarithm quotient rule calculator
expand log(u/v) as difference of logs
A
POST /algebra/log-quotient-rule$0.002⚙️ Developer UtilitiesFree
Logarithmic to exponential form converter
log_b(x)=y → b^y=x
S
POST /algebra/log-to-exponential$0.002⚙️ Developer UtilitiesFree
One-to-one function checker
horizontal line test, free
P
POST /algebra/one-to-one-function-check$0.002⚙️ Developer UtilitiesFree
Complex number addition calculator
add a+bi and c+di
P
POST /algebra/complex-add$0.002⚙️ Developer UtilitiesFree
Complex modulus calculator
|z| = √(a²+b²) distance from origin
S
POST /algebra/complex-modulus$0.002⚙️ Developer UtilitiesFree
Complex number power calculator
De Moivre (a+bi)^n rectangular
A
POST /algebra/complex-power$0.002⚙️ Developer UtilitiesFree
Complex Square Root Calculator
Find Both Roots
B
POST /algebra/complex-square-root$0.002⚙️ Developer UtilitiesFree
Logarithmic inequality solver
domain and interval notation
K
POST /algebra/log-inequality$0.002⚙️ Developer UtilitiesFree
Simplify logarithmic expressions
exact log rules calculator
F
POST /algebra/log-simplify$0.002⚙️ Developer UtilitiesFree
Number of terms in an arithmetic sequence
calculator for n
A
POST /algebra/arithmetic-number-of-terms$0.002⚙️ Developer UtilitiesFree
Product of complex conjugates calculator
z·z̄ = |z|²
P
POST /algebra/complex-conjugate-product$0.002⚙️ Developer UtilitiesFree
Complex cube roots calculator
polar and rectangular forms
F
POST /algebra/complex-cube-roots$0.002⚙️ Developer UtilitiesFree
Imaginary part of a complex number calculator
rectangular or polar
K
POST /algebra/complex-imaginary-part$0.002⚙️ Developer UtilitiesFree
Square of a Complex Number Calculator
Rectangular Form
B
POST /algebra/complex-square$0.002⚙️ Developer UtilitiesFree
Common ratio calculator
find the multiplier from consecutive terms
K
POST /algebra/geometric-common-ratio$0.002⚙️ Developer UtilitiesFree
Nth roots of unity calculator
complex roots on the unit circle
S
POST /algebra/roots-of-unity$0.002⚙️ Developer UtilitiesFree
Arithmetic sequence missing term calculator
fill the blank
B
POST /algebra/arithmetic-missing-term$0.002⚙️ Developer UtilitiesFree
Geometric sequence first term calculator
find a1 from an, n, r
P
POST /algebra/geometric-first-term$0.002⚙️ Developer UtilitiesFree
Geometric mean of two numbers
√(a×b) calculator, free
A
POST /algebra/geometric-mean-two-numbers$0.002⚙️ Developer UtilitiesFree
Sigma Notation Sum Calculator
Evaluate Finite Series
K
POST /algebra/sigma-notation-sum$0.002⚙️ Developer UtilitiesFree
Sum of First n Natural Numbers Calculator
n(n+1)/2
F
POST /algebra/sum-of-natural-numbers$0.002⚙️ Developer UtilitiesFree
Sum of first n odd numbers calculator
total equals n squared
S
POST /algebra/sum-of-odd-numbers$0.002⚙️ Developer UtilitiesFree
Binomial coefficient calculator
compute n choose k exactly
B
POST /algebra/binomial-coefficient$0.002⚙️ Developer UtilitiesFree
Characteristic polynomial 2x2 calculator
coefficients
K
POST /algebra/matrix-characteristic-polynomial-2x2$0.002⚙️ Developer UtilitiesFree
2x2 determinant calculator
calculate ad minus bc
F
POST /algebra/matrix-determinant-2x2$0.002⚙️ Developer UtilitiesFree
Hadamard product calculator
element-wise matrix multiply, free
A
POST /algebra/matrix-hadamard$0.002⚙️ Developer UtilitiesFree
Matrix minor calculator
M_ij by deleting row and column, free
P
POST /algebra/matrix-minor$0.002⚙️ Developer UtilitiesFree
Matrix of cofactors calculator
signed minors online
B
POST /algebra/matrix-of-cofactors$0.002⚙️ Developer UtilitiesFree
Symmetric matrix checker
test A = Aᵀ and first mismatch
S
POST /algebra/matrix-symmetric-check$0.002⚙️ Developer UtilitiesFree
Absolute Value Expression Evaluator at a Given Input
K
POST /algebra/absolute-value-evaluate$0.002⚙️ Developer UtilitiesFree
Multinomial Coefficient Expansion Calculator
F
POST /algebra/multinomial-coefficient$0.002⚙️ Developer UtilitiesFree
Multiply rational expressions calculator
factor, cancel, excluded values
S
POST /algebra/multiply-rational-expressions$0.002⚙️ Developer UtilitiesFree
Direct rule of three calculator
find the fourth proportional
B
POST /algebra/rule-of-three-direct$0.002⚙️ Developer UtilitiesFree
Set-builder to interval notation converter
free
P
POST /algebra/set-builder-to-interval$0.002No capabilities match your search.
How it works
1
Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
Pay only for what you use
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Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
Top up your balance and spend it across web, API and the app. It never expires.