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Live · checked Oct 12, 2026x402Research & dataCommunity listed · unclaimed

carbon-cashmere.de

Recent Kaspa blocks (max 144 per call = $1.44 cap). Optional chain_only flag to filter selected-parent chain blocks. AI agent API for backtesters and indexers. Informational research data — not investment advice. (18 paid endpoints on api.carbon-cashmere.de.)

Call via Rooms

Rooms resells calls to carbon-cashmere.de: you make one x402 payment to Rooms, Rooms pays carbon-cashmere.de from its own wallet and returns the answer with a signed Rooms receipt. Never charged when the call fails. No account or API key.

$0.024 per call, all in (carbon-cashmere.de's listed price $0.02 plus the Rooms margin; the 402 quotes the live price)

See the price (free, unpaid)

curl -i -X POST https://rooms.aurmada.com/x402/v1/broker/carbon-cashmerede -H 'Content-Type: application/json' -d '{"path":"/v1/kaspa-derivatives/recent-blocks","query":{}}'

Send {"path", "method", "query", "body"}: path is one of the paid endpoints below (default /v1/kaspa-derivatives/recent-blocks), query and body go to carbon-cashmere.de as given. Pay the 402 with any x402 client and resend the same POST with PAYMENT-SIGNATURE (or X-PAYMENT).

New to paying per call? x402 for agents explains the 402 → pay → retry loop.

Call it with the Rooms SDK

Through the Rooms switchboard (a Rooms specialist answers if it doesn't). SDK docs

// npm i https://rooms.aurmada.com/sdk/rooms-a2a-0.1.0.tgz
import { Rooms } from "rooms-a2a";
const r = await new Rooms().ask("…", { agent: "carbon-cashmerede" });
# pip install https://rooms.aurmada.com/sdk/rooms_a2a-0.1.0-py3-none-any.whl
from rooms_a2a import Rooms
r = Rooms().ask("…", agent="carbon-cashmerede")

Track record

Uptime
Collecting: shown after 3 daily checks.
Calls via Rooms (30 days)
0

No calls through Rooms in the last 30 days yet. Rooms only counts what it brokers, hosts or checks; nothing is estimated.

Paid endpoints (12)

  • GET /v1/kaspa-derivatives/recent-blocks $0.024 via Rooms
    Recent Kaspa blocks (max 144 per call = $1.44 cap). Optional chain_only flag to filter selected-parent chain blocks. AI agent API for backtesters and indexers. Informational research data — not investment advice.
  • GET /v1/bittensor-derivatives/network-fundamentals $0.024 via Rooms
    Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min.
  • GET /v1/btc-derivatives/coinbase-messages $0.024 via Rooms
    Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.
  • GET /v1/kaspa-derivatives/mining-economics $0.06 via Rooms
    Kaspa mining economics from our own archival node: KAS + USD revenue per TH/s/day, block subsidy measured live from coinbase payloads, DAG-aware emission rate, electricity-cost model with profit margin and breakeven price. Informational re…
  • GET /v1/bittensor-derivatives/alpha-price-history/:netuid $0.024 via Rooms
    Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research data — not investme…
  • GET /v1/bittensor-derivatives/subnet/:netuid/validators $0.024 via Rooms
    Top-N validators ranked by incentive for tracked Bittensor subnets. Filter only validator_permit=true neurons. AI agent API for validator-selection and stake-delegation decisions. Informational research data — not investment advice.
  • GET /v1/subtensor-derivatives/events/:block_number $0.024 via Rooms
    All Bittensor substrate events for a single finalized block (event_idx, phase, module_id, event_id, attributes). AI agent API for detailed forensic analysis of specific blocks. Informational research data — not investment advice.
  • GET /v1/bittensor-derivatives/subnet/:netuid/emission-trend $0.024 via Rooms
    Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice.
  • GET /v1/bittensor-derivatives/alpha-prices $0.024 via Rooms
    Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice.
  • GET /v1/btc-derivatives/blocks-range $0.024 via Rooms
    Bulk Bitcoin block extract (max 144 blocks per call = $1.44 cap). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward).
  • GET /v1/btc-derivatives/mempool-pressure $0.024 via Rooms
    Bitcoin mempool pressure classification (low/medium/high/extreme) + fee buckets (0-1, 1-2, 2-5, 5-10, 10-20, 20-50, 50-100, 100-200, 200+ sat/vB) + RBF count + CPFP candidate count. Updated every 5 min.
  • GET /v1/kaspa-derivatives/blocks/:block_hash $0.024 via Rooms
    Single Kaspa block extract with full DAG topology (parents, selected-parent, blue/daa score, chain-block flag). AI agent API for DAG-aware indexers. Informational research data — not investment advice.

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