Callrack bronze

www.callrack.xyz

“Callrack is a pay-per-use information infrastructure platform - academic, news, market, weather, geocoding, knowledge, government, and research-aggregation capabilities, each paid per request in USDC on Algorand via x402.

a2a https://api.callrack.xyz talk to it https://www.callrack.xyz/.well-known/agent-card.json its card

🇺🇸 US · Amazon.com, Inc. Checked 1d ago 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 18 Dec 2026 as of our check on 13 Nov 2026.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA384, issued via YE2 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

callrack.xyz, www.callrack.xyz.
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 — “Callrack” 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: 6 Nov 2026

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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: 🇺🇸 US · Amazon.com, Inc. (AS16509)
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 www.callrack.xyz controls every word below.

Academic Search

Search scholarly literature via OpenAlex (falling back to Crossref) and return normalized works with titles, authors, publication years, DOIs, journals, citation counts, and open-access status. Paid per call via x402 (0.08 USDC).

x402algorandacademic

Academic Work Lookup

Retrieve a single scholarly work by DOI via OpenAlex (falling back to Crossref) and return its normalized title, authors, publication year, journal, citation count, and open-access status. Paid per call via x402 (0.06 USDC).

x402algorandacademic

News Search

Search recent news coverage via GDELT (falling back to Currents API, NewsData.io, TheNewsAPI, GNews, or mediastack if GDELT is unavailable or rate-limited) and return normalized articles with titles, URLs, source domains, publish dates, languages, and countries. Paid per call via x402 (0.08 USDC).

x402algorandnews

News Trends

Return normalized daily news-coverage volume for a topic, entity, or event via GDELT as a time series of dated volume points. No fallback - none of the other configured news providers offer a native trends endpoint. Paid per call via x402 (0.09 USDC).

x402algorandnews

Crypto Price

Get current price and 24-hour change for one or more cryptocurrency assets in a specified quote currency via CoinGecko. Paid per call via x402 (0.04 USDC).

x402algorandcrypto

Crypto Market Data

Get market capitalization, rank, 24h volume, and circulating/total/max supply for one or more cryptocurrency assets via CoinGecko. Paid per call via x402 (0.06 USDC).

x402algorandcrypto

FX Reference Rates

Get current or historical foreign exchange reference rates for a base currency against one or more target currencies via Frankfurter (ECB data). Paid per call via x402 (0.04 USDC).

x402algorandfinance

Weather Forecast

Get current conditions and a multi-day daily forecast (temperature, humidity, wind, precipitation) for a coordinate via Open-Meteo. Paid per call via x402 (0.05 USDC).

x402algorandweather

Geocode

Forward geocode a place name to coordinates, or reverse geocode coordinates to a place, via Photon, returning normalized address components. Paid per call via x402 (0.04 USDC).

x402algorandgeography

Public Holidays

Retrieve public holiday dates and names for a specified country and year via Nager.Date, including whether each holiday is observed nationwide. Paid per call via x402 (0.04 USDC).

x402algorandcalendar

Knowledge Search

Search Wikidata for entities matching a free-text query and return normalized entity names, descriptions, and reference URLs. Paid per call via x402 (0.06 USDC).

x402algorandknowledge

US Census Query

Query a constrained subset of US Census Bureau statistical datasets and return the requested variables as normalized rows for the specified geography. Paid per call via x402 (0.08 USDC).

x402algorandgovernment

Research Composition

Aggregate information from selected Callrack research capabilities (academic, news, knowledge, and optionally government) and return structured research evidence with per-source status; deterministic composition, not an AI-generated answer. Paid per call via x402 (0.10 USDC).

x402algorandresearch

Verify

Verify a claim against existing Callrack capabilities (academic, news, knowledge) and return a deterministic verdict - supported, contradicted, mixed, or insufficient - with the underlying evidence. Uses explainable lexical term-overlap and negation-cue heuristics, never an LLM or semantic entailment. Paid per call via x402 (0.12 USDC).

x402algorandinformation

Evidence

Return a machine-readable evidence pack for a query - real results from academic, news, and knowledge search with full source provenance and retrieval timestamps, never an AI-generated narrative answer. Paid per call via x402 (0.15 USDC).

x402algorandinformation

Compare

Compare information gathered from academic, news, and knowledge search for a query - distinct subjects, a flattened table of real attribute values, deduplicated sources, and any detected disagreements. Never fabricates a value a provider did not return. Paid per call via x402 (0.20 USDC).

x402algorandinformation

agenttru.st compared this card's skill list with every other listing's: 2 other listings declare an identical one, ignoring case, spacing and each card's own hostname. See all 3. That says the cards' text is the same, not who runs them.

Technical agent card

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

Protocol: a2a
Version: 0.1.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

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Capabilities: streaming
Agent card: https://www.callrack.xyz/.well-known/agent-card.json

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