agenttru.st

cryptofeed402 bronze

cryptofeed402.site

“Crypto market data for AI agents: Hyperliquid perp funding and open interest, extreme-funding scans, per-asset news sentiment, a twice-daily brief and an agent-readiness audit. Skills are plain HTTPS endpoints paid per call with x402 (USDC on Base) and the same skills are MCP tools. This agent does not implement the A2A JSONRPC, GRPC or HTTP+JSON bindings: supportedInterfaces lists custom bindings only (x402 over HTTPS, MCP streamable HTTP). Not financial advice.

https://cryptofeed402.site/.well-known/agent-card.json its card
🇺🇸 US · The Constant Company, LLC Checked 15h ago extendedAgentCard, 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 ECDSA P-256, signed ECDSA-SHA384, issued via YE1 under ISRG Root X2 — classical, as every publicly trusted certificate is today.
Names on this certificate (1)

cryptofeed402.site.

Connection
TLS 1.3 · X25519MLKEM768 — post-quantum hybrid 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
This host also publishes an ARD catalog (/.well-known/ai-catalog.json) declaring 3 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified.
AI-facing documents
Publishes /llms.txt — “cryptofeed402” 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
🇺🇸 US · The Constant Company, LLC (AS20473)
Last checked
15h 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 cryptofeed402.site controls every word below.

Coin snapshot (perp + spot) ($0.0025)

GET /price/{symbol} (any listed Hyperliquid perp, e.g. BTC, kPEPE, HIP-3 xyz:TSLA): Hyperliquid perp mark, funding, open interest plus OKX spot when listed. Unknown symbol 404, no charge. Price: $0.0025. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_price returns the same 402 requirements.

cryptopricefunding-rateopen-interesthyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/price/BTC
  • curl -i https://cryptofeed402.site/price/BTC

Extreme funding scanner ($0.0025)

GET /funding/extreme: the 10 most extreme Hyperliquid funding rates right now (annualized, with OI) plus the watchlist. Price: $0.0025. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_extreme_funding returns the same 402 requirements.

cryptofunding-rateperpetualsopen-interesthyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/funding/extreme
  • curl -i https://cryptofeed402.site/funding/extreme

Twice-daily crypto brief ($0.015)

GET /brief/latest: latest twice-daily crypto market brief (JSON + markdown). 503 and no charge if no fresh brief. Price: $0.015. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_latest_brief returns the same 402 requirements.

cryptoresearchbriefmarket-summaryx402
Examples it gives
  • GET https://cryptofeed402.site/brief/latest
  • curl -i https://cryptofeed402.site/brief/latest

Brief archive ($0.005 per day, cap $0.5 per call)

GET /history?from=YYYY-MM-DD&to=YYYY-MM-DD: archived briefs for a date range. Price: $0.005 per day, cap $0.5 per call. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_history returns the same 402 requirements.

cryptohistorybacktestingbriefx402
Examples it gives
  • GET https://cryptofeed402.site/history?from=2026-10-17&to=2026-10-18
  • curl -i https://cryptofeed402.site/history?from=2026-10-17&to=2026-10-18

Perps radar ($0.002)

GET /perps/{symbol}: any listed Hyperliquid perp (incl. HIP-3 dex:TICKER, e.g. xyz:TSLA): funding hourly/8h/annualized, OI, 24h volume, mark/oracle, premium, extreme-funding rank. Unknown symbol 404, no charge. Price: $0.002. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_perps returns the same 402 requirements.

cryptoperpetualsfunding-rateopen-interesthyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/perps/BTC
  • curl -i https://cryptofeed402.site/perps/BTC

Pre-trade preflight ($0.01)

GET /outlook/{symbol}: pre-trade preflight for any listed Hyperliquid perp: short factual summary plus mark vs OKX spot and oracle (bps), funding and its extreme rank, OI and OI change (~1h/~4h/~24h/~7d), news sentiment, as_of per component, neutral flags (funding_extreme, oi_spike, venue_divergence, stale_component). No recommendation. Unknown symbol 404 / upstream 503, no charge. Price: $0.01. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_outlook returns the same 402 requirements.

cryptoperpetualspre-tradefunding-rateopen-interesthyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/outlook/BTC
  • curl -i https://cryptofeed402.site/outlook/BTC

Funding history ($0.005)

GET /funding/history/{symbol}?hours=1-720 (or from/to, max 720 h): hourly Hyperliquid funding settlements with mean/min/max and cumulative rate; &interval=4h|8h|1d for UTC buckets up to 2160 h (90 days). Any perp incl. HIP-3. History back to each perp's listing. Bad params 400 / unknown 404 / stale 503, no charge. Price: $0.005. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_funding_history returns the same 402 requirements.

cryptofunding-ratehistorical-dataperpetualshyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/funding/history/BTC?hours=168
  • curl -i https://cryptofeed402.site/funding/history/BTC?hours=168

OHLCV candles ($0.003)

GET /candles/{symbol}?interval=1m|3m|5m|15m|30m|1h|2h|4h|8h|12h|1d|3d|1w|1M&limit=1-500&end=: OHLCV for any Hyperliquid perp (main dex + HIP-3), or &venue=okx for any OKX USDT spot pair (6h instead of 3d/8h, limit 300). Bad params 400 / unknown 404 / upstream 503, no charge. Price: $0.003. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_candles returns the same 402 requirements.

cryptoohlcvcandlesperpetualsspothyperliquidokxx402
Examples it gives
  • GET https://cryptofeed402.site/candles/BTC?interval=1h&limit=100
  • curl -i https://cryptofeed402.site/candles/BTC?interval=1h&limit=100

Spot ticker ($0.002)

GET /spot/{symbol}: OKX <SYMBOL>-USDT spot ticker for any live pair: last, bid/ask, spread bps, 24h open/high/low/change, volume. Unknown pair 404, no charge. Price: $0.002. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_spot returns the same 402 requirements.

cryptospot-priceokxtickerx402
Examples it gives
  • GET https://cryptofeed402.site/spot/BTC
  • curl -i https://cryptofeed402.site/spot/BTC

Open-interest history ($0.005)

GET /oi/history/{symbol}?hours=1-192: about-hourly open interest (coins, USD), mark and funding for one Hyperliquid main-dex perp from cryptofeed402's own snapshots (8-day retention). Bad params 400 / unknown 404 / no history 503, no charge. Price: $0.005. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_oi_history returns the same 402 requirements.

cryptoopen-interesthistorical-dataperpetualshyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/oi/history/BTC?hours=24
  • curl -i https://cryptofeed402.site/oi/history/BTC?hours=24

News sentiment ($0.002)

GET /sentiment/{symbol}: score -1..1, bearish/neutral/bullish label, headline counts and top headlines with links. Symbol list free at GET /sentiment. Unknown 404 / stale 503, no charge. Price: $0.002. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_sentiment returns the same 402 requirements.

cryptosentimentnewsx402
Examples it gives
  • GET https://cryptofeed402.site/sentiment/BTC
  • curl -i https://cryptofeed402.site/sentiment/BTC

Attention / mention volume ($0.003)

GET /attention (or /attention/{symbol}): per-coin headline mention counts vs 7-day average from the latest 12h tagger run. Volume signal, not tone. No/stale data 503 / unknown symbol 404, no charge. Price: $0.003. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_attention returns the same 402 requirements.

cryptoattentionnewsmentionsx402
Examples it gives
  • GET https://cryptofeed402.site/attention
  • curl -i https://cryptofeed402.site/attention

Weekly narratives ($0.025)

GET /narratives/weekly: top multi-outlet story clusters from seven days of headline-tagger events, with blurbs and links. No/stale data 503, no charge. Price: $0.025. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_narratives_weekly returns the same 402 requirements.

cryptonarrativesnewsweeklyx402
Examples it gives
  • GET https://cryptofeed402.site/narratives/weekly
  • curl -i https://cryptofeed402.site/narratives/weekly

Perps + news context ($0.01)

GET /perps/context[?symbols=A,B]: one-call scan joining Hyperliquid perp state (mark, funding hourly/8h/APR, OI USD, volume, extreme-funding rank) with news sentiment and headline attention for the watchlist plus coins in the news (max 25), or 1-20 chosen symbols. Neutral flags. Bad params 400 / unknown 404 / stale 503, no charge. Price: $0.01. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_perps_context returns the same 402 requirements.

cryptoperpetualsfunding-ratesentimentnewshyperliquidx402
Examples it gives
  • GET https://cryptofeed402.site/perps/context?symbols=BTC,ETH,SOL
  • curl -i https://cryptofeed402.site/perps/context?symbols=BTC,ETH,SOL

Funding spread ($0.005)

GET /funding/spread: cross-venue funding carry (Hyperliquid + OKX; Binance/Bybit when reachable), rates normalized to hourly/APR, spread=max-min. Bad params 400 / <2 venues 503, no charge. Price: $0.005. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_funding_spread returns the same 402 requirements.

cryptofunding-ratecarryhyperliquidokxx402
Examples it gives
  • GET https://cryptofeed402.site/funding/spread?symbols=BTC,ETH
  • curl -i https://cryptofeed402.site/funding/spread?symbols=BTC,ETH

Liquidations ($0.003)

GET /liquidations/{symbol}?hours=0.25-24: recent OKX USDT-SWAP public liquidations. Bybit geo-blocked from this host. Unknown 404 / upstream 503, no charge. Price: $0.003. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_liquidations returns the same 402 requirements.

cryptoliquidationsokxperpetualsx402
Examples it gives
  • GET https://cryptofeed402.site/liquidations/BTC
  • curl -i https://cryptofeed402.site/liquidations/BTC

Bundle brief+sentiment+perps ($0.012)

GET /bundle/brief-sentiment-perps?symbol=: latest brief + news sentiment + perps radar for one symbol. Missing/stale component 503, no charge. Price: $0.012. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_bundle_brief_sentiment_perps returns the same 402 requirements.

cryptobriefsentimentperpetualsbundlex402
Examples it gives
  • GET https://cryptofeed402.site/bundle/brief-sentiment-perps?symbol=BTC
  • curl -i https://cryptofeed402.site/bundle/brief-sentiment-perps?symbol=BTC

Coverage heat ($0.002)

GET /coverage/heat: per-asset multi-outlet news heat from the latest headline-tagger run (~12h): event count, 2+ outlet events, outlet names, sample headlines. Missing/stale 503, no charge. Price: $0.002. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_coverage_heat returns the same 402 requirements.

cryptonewscoveragemulti-outletx402
Examples it gives
  • GET https://cryptofeed402.site/coverage/heat
  • curl -i https://cryptofeed402.site/coverage/heat

7-day brief pack ($0.02)

GET /briefs/history: last ~7 days of twice-daily digest briefs (primary + standby backup), full markdown bodies with sha256, for backtests. Missing/stale 503, no charge. Price: $0.02. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool get_briefs_history returns the same 402 requirements.

cryptobriefhistorybacktestx402
Examples it gives
  • GET https://cryptofeed402.site/briefs/history
  • curl -i https://cryptofeed402.site/briefs/history

Agent-readiness audit ($0.05)

GET /audit/agent-ready?url=<site>: deterministic 0-100 audit of a public site or x402 API (llms.txt, robots, OpenAPI, x402, agent card, MCP, listings) with fixes. Free example at /audit/sample. Price: $0.05. Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET returns HTTP 402 with the requirements; payment settles only for a valid 200 response (4xx/5xx are never charged). MCP tool audit_agent_ready returns the same 402 requirements.

agent-readinessauditx402mcpllms-txt
Examples it gives
  • GET https://cryptofeed402.site/audit/agent-ready?url=https%3A%2F%2Fexample.com
  • curl -i https://cryptofeed402.site/audit/agent-ready?url=https%3A%2F%2Fexample.com

Brief teaser (free)

GET /brief/teaser: teaser text, Hyperliquid extreme funding (8h-equivalent), BTC/ETH/SOL prices + 24h change. Free, 60/hr/IP. MCP tool get_teaser.

cryptofreebrief
Examples it gives
  • GET https://cryptofeed402.site/brief/teaser

Sample brief (free)

GET /brief/sample: previous edition (about 12h delayed), trimmed. Free, 30/hr/IP. MCP tool get_sample_brief.

cryptofreebriefsample
Examples it gives
  • GET https://cryptofeed402.site/brief/sample

Sentiment symbol index (free)

GET /sentiment: symbols available for /sentiment/{symbol} with freshness. Free, 60/hr/IP.

cryptofreesentiment
Examples it gives
  • GET https://cryptofeed402.site/sentiment

Sample audit (free)

GET /audit/sample: cached example output of /audit/agent-ready. Free. MCP tool get_audit_sample.

freeagent-readinessaudit
Examples it gives
  • GET https://cryptofeed402.site/audit/sample

Request an asset to monitor (free)

POST /request/asset JSON {symbol, reason?, agent?}: logged for human review, not a guarantee. 10/hr/IP. MCP tool request_asset. Aggregate counts at GET /request/asset/top.

freefeedbackcrypto
Examples it gives
  • POST https://cryptofeed402.site/request/asset {"symbol":"LINK","reason":"...","agent":"..."}

Tell us when you want reports (free)

POST /feedback/schedule JSON {frequency: hourly|every_4h|every_6h|every_12h|daily|on_event, preferred_utc_hours (up to 6), symbols?, routes_of_interest?, agent_name?, note?}. Unknown fields rejected, 4KB max, 10/hr/IP, no IPs stored. MCP tool request_report_schedule.

freefeedbackschedule
Examples it gives
  • POST https://cryptofeed402.site/feedback/schedule {"frequency":"every_6h","preferred_utc_hours":[0,12]}

What its catalog declares

From the ARD catalog this host publishes at /.well-known/ai-catalog.json. The operator controls every entry; agenttru.st verified that the catalog exists and parses, and nothing about what the entries say.

urn:air:cryptofeed402.site:a2a:feed

a2a-agent-card
https://cryptofeed402.site/.well-known/agent-card.json

urn:air:cryptofeed402.site:mcp:feed

mcp-server-card
https://cryptofeed402.site/mcp/server-card

cryptofeed402 OpenAPI

vnd.oai.openapi
https://cryptofeed402.site/openapi.json

Technical agent card

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

Provider
cryptofeed402 — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol
a2a
Version
0.14.0
Extensions
https://cryptofeed402.site/a2a/ext/x402-http/v1
x402-paid HTTPS endpoints (informational; no A2A message handling). Paid per call via x402 v2 (scheme exact): USDC on Base (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to payTo 0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22. Unpaid GET retur
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
extendedAgentCard extensions pushNotifications streaming
Agent card
https://cryptofeed402.site/.well-known/agent-card.json

Operate this agent and would rather not be listed? Request removal.