Touchstone
x402/touchstonex402 service listed on awesome-x402: Touchstone [x402: $0.001/call on eip155:8453, category=data]
Tools · 20
Open a sealed-bid auction (close round N). Bidders timelock-seal bids to N; nobody can read any bid until N; highest wins, signed + re-verifiable. bid/open/get are free. Cost: $0.01 per call, USDC on…
Open (settle) a sealed-bid auction whose deadline has passed. Free: no payment required.
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…
Buy a prepaid key ONCE, then call every paid route with Authorization: Bearer <key> and no further signing. $1.00 buys $1.20 of credit (20% bulk discount); each call debits its own route price. The ke…
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…
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 ve…
Deterministic WMM2025 magnetic field (one location/date). Cost: $0.002 per call, USDC on Base via x402 — or pass Authorization: Bearer tsk_… from a prepaid key (POST https://touchstone.locomot.io/cre…
Deterministic, rule-based proofreading flags — passive voice, adverbs, wordiness, filler, repeated words, whitespace, a/an, punctuation, sentence length, capitalization. Each flag carries an offset + …
Deterministic phonetic rhyme (perfect + scored slant), pronunciation, syllables, scansion, homophones — from CMUdict. Cost: $0.001 per call, USDC on Base via x402 — or pass Authorization: Bearer tsk_…
Provably-fair random draw (dice, ints, choice, shuffle, bytes) seeded from the current drand quicknet beacon. Free; GET /random/proof adds the full inline cryptographic receipt. Free: no payment requ…
Provably-fair draw from the drand beacon with the full verifiable receipt + nonce-binding (the free draw is at GET /random). Cost: $0.001 per call, USDC on Base via x402 — or pass Authorization: Bear…
Deterministic readability scores (Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI) over published formulas. For long text use POST. Signed. Cost: $0.001 per call, USDC on Base via x402 —…
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 a…
Inspect a timelock ciphertext: which drand round it unlocks at and when that is, without decrypting. Free: no payment required.
Deterministic ephemeris snapshot (one location/time). Cost: $0.003 per call, USDC on Base via x402 — or pass Authorization: Bearer tsk_… from a prepaid key (POST https://touchstone.locomot.io/credits…
Deterministic syntax validation — does this JSON/YAML/TOML/Python/regex parse? Valid/invalid + error location from the canonical parser. For long source use POST. Cost: $0.001 per call, USDC on Base …
Deterministic time/timezone truth: DST-aware zone conversion, transition times, business-day & holiday math, epoch<->ISO. Cost: $0.01 per call, USDC on Base via x402 — or pass Authorization: Bearer t…
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 trust…
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 signe…
Recover who signed a message (ecrecover, EIP-191 personal_sign). For EIP-712 typed data use POST /verify/sig. Every answer signed. Cost: $0.002 per call, USDC on Base via x402 — or pass Authorization…
Resources · 4
The whole service in one page, written for a model: every route, its price, its free sample, and how payment works.
https://touchstone.locomot.io/llms.txt
OpenAPI 3.1 description of every route, with the x402 security scheme.
https://touchstone.locomot.io/openapi.json
Machine-readable payment requirements for every paid resource: price, asset, network and payTo address.
https://touchstone.locomot.io/.well-known/x402
Liveness and the deployed version.
https://touchstone.locomot.io/health
Similar MCP servers embedding-nearest
How to use
Add to your Claude Desktop / Cursor / Cline MCP config:
{
"mcpServers": {
"touchstone": {
"url": "https://touchstone.locomot.io",
"transport": "http"
}
}
}