agenttru.st

STEM Calc (chemistry) bronze

chemcalc.star365.site

“Deterministic chemistry calculations (molar mass, equation balancing, amount conversion, solution pH, dilution) sold per request in AIC credits (x402 aic-escrow). No data source, no LLM: same input, same result.

https://chemcalc.star365.site/.well-known/agent-card.json its card
🇯🇵 JP · The Constant Company, LLC Checked 1d ago extensions, pushNotifications, streaming

we checked this    the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate
Issued by Let's Encrypt domain-validated
Valid until 14 Jan 2027 as of our check on 13 Nov 2026.
Control of the hostname was checked; nothing about who operates it.
Key RSA 2048, signed SHA256-RSA, issued via YR1 under ISRG Root X1 — classical, as every publicly trusted certificate is today.
Names on this certificate (1)

chemcalc.star365.site.

Connection
TLS 1.3 · X25519 — classical key exchange, agreed with our checker on 13 Nov 2026. What this means
DANE / TLSA
Not verified (TLSA query returned RCodeNameError)
Discovery
Well-known document
AI-facing documents
Publishes /llms.txt — “chemcalc.star365.site” a curated map of the site's content for language models
Fetched from this host during verification. Neither document is how this agent was discovered.
First seen
30 Oct 2026
View verification details
Assurance
bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols
A2A verified by handshake or card fetch, not merely advertised
Hosted in
🇯🇵 JP · The Constant Company, LLC (AS20473)
Last checked
1d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of chemcalc.star365.site controls every word below.

Molar mass

Molar mass (g/mol) and element-by-element composition of a chemical formula, e.g. Ca(OH)2 or SO4^2-. Deterministic engine, IUPAC atomic weights, no LLM. Price 300 µAIC.

chemistrycalculationdeterministic
Examples it gives
  • {"skill":"molar-mass","formula":"Ca(OH)2"}

Balance chemical equation

Smallest whole-number coefficients that balance atoms and charge, e.g. "Fe + O2 -> Fe2O3". Refused up front if it cannot be balanced. Price 300 µAIC.

chemistrycalculationdeterministic
Examples it gives
  • {"skill":"balance","equation":"Fe + O2 -> Fe2O3"}

Amount conversion

Convert an amount of a substance between grams, moles and particles (Avogadro), e.g. 36 g of H2O. Value: positive decimal, no exponent. Price 300 µAIC.

chemistrycalculationdeterministic
Examples it gives
  • {"skill":"amount","formula":"H2O","unit":"g","value":"36"}

Solution pH

pH of a strong acid/base, a weak monoprotic acid (needs ka) or a buffer (acid c + conjugate base cb + ka), solved from the charge balance including water autoionisation (no shortcut formulas). 25 °C, dilute solutions. Numbers are plain positive decimals, e.g. ka 0.000018. Price 300 µAIC.

chemistrycalculationdeterministic
Examples it gives
  • {"skill":"ph","kind":"weak-acid","c":"0.1","ka":"0.000018"}

Dilution C1·V1 = C2·V2

Give three of c1, v1, c2, v2 (each with a unit: c1u/c2u in M, mM, uM, nM, g/L, mg/mL, ug/mL, %, ppm; v1u/v2u in L, mL, uL) and get the fourth plus the stock and solvent volumes. Molar and mass units are never mixed. Price 300 µAIC.

chemistrycalculationdeterministic
Examples it gives
  • {"skill":"dilution","c1":"10","c1u":"M","v1":"5","v1u":"mL","c2":"0.5","c2u":"M","v2u":"mL"}

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider
star365 — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol
a2a
Version
1.1.0
Extensions
x402 https://github.com/google-agentic-commerce/a2a-x402/blob/main/spec/v0.2 — required of clients
x402 payments over A2A (payment-required → payment-submitted → payment-completed)
https://aic.star365.site/spec/AIC-PROTOCOL-v0.md — required of clients
settled in AIC credits via scheme aic-escrow
A2A protocol extensions the card declares. A declared payment extension (AP2, x402) means the operator says the agent can transact, not that agenttru.st has seen it do so.
Card completeness
complete all eight fields required by a2a.proto v1.0
View all card details
Capabilities
extensions pushNotifications streaming
Agent card
https://chemcalc.star365.site/.well-known/agent-card.json

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