Science And Education x402 offerings

Scientific unit conversion for pressure, energy, and molarity using exact conversion factors.

Lookup of standard physical constants (speed of light, gravitational constant, Planck constant, elementary charge, Avogadro number, Boltzmann constant, gas constant, electron mass) with exact publish…

Matrix operations: multiply, transpose, determinant, and invert, for matrices up to 20x20. Uses the ml-matrix library's LU decomposition (LuDecomposition) for determinant and inversion, with a numeri…

Solves a system of linear equations (Ax = b) using the ml-matrix library's LU decomposition (LuDecomposition), with a near-singularity guard beyond the library's exact-singular check, for systems up …

Generates customized practice problems and solutions tailored to a learner's level, topics, and preferences for targeted skill improvement.

Primality check. Call for teaching demos, ID heuristics, or lightweight number filters (bounded integers). Returns whether n is prime with a clear boolean field. $0.001 USDC per successful call via x402 on Base or Solana—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Calculate composition, molecular mass and model-based charge descriptors from supplied protein sequences. For dataset analysis; not a folding or function prediction.

Check a supplied single-qubit complex density matrix for unit trace, Hermiticity and positive semidefiniteness with explicit tolerance; no hardware validation. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.

Check a supplied single-qubit complex density matrix for unit trace, Hermiticity and positive semidefiniteness with explicit tolerance; no hardware validation.

Interpolates a caller-supplied start and end temperature across a bounded number of steps using either a linear or geometric rule. It does not run an annealer, optimize a problem Hamiltonian or tune a schedule from hardware measurements.

Compare caller-declared qubit count, connectivity and gate-duration requirements with supplied architecture capability records. No verified best-platform recommendation.

Fit a bounded damped Rabi/Ramsey trace by frequency-decay grid search; report residuals, resolution, aliasing refusal and edge hits. No parameter confidence interval.

Match supplied Raman peak positions by nearest unused reference within an absolute tolerance. No linewidth analysis or unique material identification.

Use when an agent needs something true to say and must not repeat itself across a session: one curious fact, in English or Spanish, by topic: science, computing, history or nature. Takes parameters, returns an id so you can avoid repeats across a session, and accepts a seed for a reproducible answer.

Fit supplied randomized-benchmarking decay observations with residuals and protocol-bound error estimates. Not a platform-independent quantum-computer ranking.

Invert a supplied single-qubit readout calibration and report sensitivity and nonphysical corrected fractions without clipping. Calibration uncertainty not estimated.

Verify a citation: does it exist, is it retracted, and do the given title/authors/year/journal match the canonical record? Checked against Crossref (retraction data included) with OpenAlex as a fallback when no DOI is given.

Literature review and related-paper discovery. Given a seed paper (arXiv id, DOI, or OpenAlex id) or a topic query, returns semantically similar and recommended scholarly papers to expand a reading list or systematic review, via Semantic Scholar recommendations with an OpenAlex related-works fallback. Keyless.

Prepare a reproducible research handoff from supplied public or synthetic artifact contents, dependencies, algorithm version, seed and Supplied-record analysis, not independent certification. Full contract at the free describe URL.

Searches OpenAlex and Crossref for publications and returns each with its DOI, authors and their affiliations, publication year, venue, abstract, citation count and, where one exists, a direct link to a legally free full text with the licence it is offered under. OpenAlex stores abstracts as an inverted word index rather than text; it is reconstructed here, because the raw structure is unusable. Results can be filtered by year and restricted to open access.

RFC 1035: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

RFC 1945: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

RFC 2326: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

RFC 2865: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.