touchstone.locomot.io
15 resources listed under touchstone.locomot.io.
Source: https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources · last updated 2026-09-18
Resources
Deterministic time/timezone truth: DST-aware zone conversion, transiti
Deterministic time/timezone truth: DST-aware zone conversion, transition times, business-day & holiday math, epoch<->ISO. Free sample, no payment required: GET /play/time
Provably-fair draw from the drand beacon with the full verifiable rece
Provably-fair draw from the drand beacon with the full verifiable receipt + nonce-binding (the free draw is at GET /random).
Deterministic ephemeris snapshot (one location/time)
Deterministic ephemeris snapshot (one location/time). Free sample, no payment required: GET /play/sky
Recover who signed a message (ecrecover, EIP-191 personal_sign)
Recover who signed a message (ecrecover, EIP-191 personal_sign). For EIP-712 typed data use POST /verify/sig. Every answer signed.
Deterministic unit conversion reproducing NIST SP 811 exact factors (l
Deterministic unit conversion reproducing NIST SP 811 exact factors (length, mass, volume, energy, power, pressure, force, area, speed, data, angle, frequency + affine temperature). Every answer signed. Free sample, no payment required: GET /play/unit
Deterministic syntax validation — does this JSON/YAML/TOML/Python/rege
Deterministic syntax validation — does this JSON/YAML/TOML/Python/regex parse? Valid/invalid + error location from the canonical parser. For long source use POST. Free sample, no payment required: GET /play/syntax
Timelock encryption (tlock / encrypt-to-the-future): seal a payload to
Timelock encryption (tlock / encrypt-to-the-future): seal a payload toward a future drand round — undecryptable by anyone, including us, until that round lands; or open a landed seal. For sealed-bid auctions, commit-reveal, scheduled secrets, dead-man switches. age-armored, interoperable. Free zero-knowledge inspect at /sealed/inspect.
Verifiable timestamp (trustless proof-of-existence / freshness proof):
Verifiable timestamp (trustless proof-of-existence / freshness proof): bind a hash to a drand round for an anti-backdating receipt — proves data existed no earlier than a public instant, with no trusted timestamp authority. Privacy: stamp an opaque sha256 digest.
Deterministic phonetic rhyme (perfect + scored slant), pronunciation,
Deterministic phonetic rhyme (perfect + scored slant), pronunciation, syllables, scansion, homophones — from CMUdict. Free sample, no payment required: GET /play/prosody
Deterministic, rule-based proofreading flags — passive voice, adverbs,
Deterministic, rule-based proofreading flags — passive voice, adverbs, wordiness, filler, repeated words, whitespace, a/an, punctuation, sentence length, capitalization. Each flag carries an offset + suggestion. For long text use POST.
Exact structured diff
Exact structured diff. mode=text -> unified diff + line counts; mode=json -> an RFC 6902 JSON Patch (RFC 6901 pointers) that round-trips a->b; mode=words -> inline word-level opcodes. For large inputs use POST. Every answer signed. Free sample, no payment required: GET /play/diff
Deterministic readability scores (Flesch, Flesch-Kincaid, Gunning Fog,
Deterministic readability scores (Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI) over published formulas. For long text use POST. Signed.
Deterministic WMM2025 magnetic field (one location/date)
Deterministic WMM2025 magnetic field (one location/date). Free sample, no payment required: GET /play/field
Before you pay an x402 door, check it against its catalogue entry
Before you pay an x402 door, check it against its catalogue entry. A nightly probe of EVERY host in the x402 index (1,618 hosts, 15,227 listings, 100% coverage): the live 402's real payTo and price versus what the catalogue claims, plus dead and self-contradicting hosts. 28.6% of listings sit on a host the catalogue gets wrong — one names one payee and pays another across 965 listings. Same computation as GET; send the parameters as a JSON body. Free sample, no payment required: GET /play/door
Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-dat
Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite
Machine-readable
All resources from this provider: /discovery/merchant (by payment address) or filter /discovery/resources.