touchstone

Name: touchstone
Author: Iris

AgentA2A

by Irishomepage ↗v2026-09-06

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability12/12 checks ok

30 days ago

Endpoints

https://touchstone.locomot.io/a2a/v1a2a · auth: none · checked on a schedule

Registry facts

Not distributed through a package registry we index.

when	check	result	http	latency	detail
36 min ago	a2a card	ok	200	546 ms	protocol 0.3 · card: touchstone · 20 skills
8 h ago	a2a card	ok	200	548 ms	protocol 0.3 · card: touchstone · 20 skills
15 h ago	a2a card	ok	200	676 ms	protocol 0.3 · card: touchstone · 20 skills
22 h ago	a2a card	ok	200	640 ms	protocol 0.3 · card: touchstone · 20 skills
30 h ago	a2a card	ok	200	521 ms	protocol 0.3 · card: touchstone · 20 skills
2 d ago	a2a card	ok	200	527 ms	protocol 0.3 · card: touchstone · 20 skills
2 d ago	a2a card	ok	200	542 ms	protocol 0.3 · card: touchstone · 20 skills
2 d ago	a2a card	ok	200	675 ms	protocol 0.3 · card: touchstone · 20 skills
2 d ago	a2a card	ok	200	511 ms	protocol 0.3 · card: touchstone · 20 skills
3 d ago	a2a card	ok	200	533 ms	protocol 0.3 · card: touchstone · 20 skills

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — sun/moon/planet positions, geomagnetic field, time zones and holidays, NIST unit conversion, signature recovery, provably-fair randomness, timelock encryption, prosody, readability, syntax, citations, diffs. Same input, same bytes, every answer signed. Structured invocation only: this agent parses, it does not guess.

auctiondeterministicverifiablex402freecitecreditsdiffdoorfieldproofreadprosodyrandomreadabilitysealedskysyntaxtimetimestampunitverify

Declared skills

auction create — 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.
auction open — Open (settle) a sealed-bid auction whose deadline has passed.
cite — 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.
credits — 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 key is returned exactly once and is stored hashed — it cannot be recovered.
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.
door — 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.
field — Deterministic WMM2025 magnetic field (one location/date).
proofread — 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.
prosody — Deterministic phonetic rhyme (perfect + scored slant), pronunciation, syllables, scansion, homophones — from CMUdict.
random — 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.
random proof — Provably-fair draw from the drand beacon with the full verifiable receipt + nonce-binding (the free draw is at GET /random).
readability — Deterministic readability scores (Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI) over published formulas. For long text use POST. Signed.
sealed — 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.
sealed inspect — Inspect a timelock ciphertext: which drand round it unlocks at and when that is, without decrypting.
sky — Deterministic ephemeris snapshot (one location/time).
syntax — Deterministic syntax validation — does this JSON/YAML/TOML/Python/regex parse? Valid/invalid + error location from the canonical parser. For long source use POST.
time — Deterministic time/timezone truth: DST-aware zone conversion, transition times, business-day & holiday math, epoch<->ISO.
timestamp — 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.
unit — 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.
verify sig — Recover who signed a message (ecrecover, EIP-191 personal_sign). For EIP-712 typed data use POST /verify/sig. Every answer signed.

kind A2A Agent Card

name A2A Agent Card

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

homepageUrl A2A Agent Card

publisherUrl A2A Agent Card

publisherName A2A Agent Card

Derived by Wellknown

Capabilities

Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.

commerce.paymentsPaymentsdeclared

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

A2A Agent Cardhttps://touchstone.locomot.io/.well-known/agent-card.json

first seen 4 d ago · fetched 4 d agoopen ↗

Field history (7 recent events)

4 d ago · declared · summary → "Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — su
4 d ago · declared · description → "Verified-reality oracle for agents: deterministic, signed answers to the facts an agent cannot afford to get wrong — su
4 d ago · declared · publisherName → "Iris"
4 d ago · declared · publisherUrl → "https://github.com/savecharlie/almanac"
4 d ago · declared · homepageUrl → "https://touchstone.locomot.io/llms.txt"
4 d ago · declared · version → "2026-09-06"
4 d ago · declared · protocols → ["a2a"]