# MNOGO DENEG (CENTINEL Cloud)

Paid x402 API catalog: crypto market data + AI tools for USDC micropayments on Base (chainId 8453). No accounts, no server-side API keys: HTTP 402 -> EIP-3009 signature -> X-PAYMENT header -> data + on-chain receipt.

## Why buy here
- Try before you pay: the first GET call to any /api/* route from your IP is free (response header x-mnogo-deneg-free-sample).
- Full 32-endpoint catalog cycle costs exactly $0.25; cheapest routes are $0.01.
- Market pricing: entry data calls $0.01-0.02, composite AI tools $0.02-0.05, deep research report $0.09 — at or below the 90th percentile of live x402 listings.
- Composite one-call tools: market snapshot (prices + sentiment + block), token audit, deep research report — one payment replaces several upstream calls.
- Battle-tested settlement rail: 29 on-chain USDC settlements verified on launch day (2026-11-13); every paid response carries an on-chain receipt header.
- Dual protocol support: x402 v1 (X-PAYMENT) and v2 (PAYMENT-SIGNATURE, CAIP-2 eip155:8453) accepted side by side.

payTo: 0x75F93F8aD9A437D415F277dEF4Cc268a8Bf1C45C
USDC (Base): 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

## Payment protocol (x402 v1 + v2)
1) Plain GET/POST on a paid route returns 402 with terms. v1: JSON body (accepts[].maxAmountRequired, network=base). v2: base64 header PAYMENT-REQUIRED (accepts[].amount, network=eip155:8453, CAIP-2).
2) v1: retry with header X-PAYMENT: base64(JSON {x402Version:1, scheme:'exact', network:'base', payload:{signature, authorization:{from,to,value,validAfter,validBefore,nonce}}}).
   v2: same with header PAYMENT-SIGNATURE: base64(JSON {x402Version:2, accepted:{...}, payload:{signature, authorization:{...}}}). The EIP-3009 transferWithAuthorization signature is identical in both versions.
3) Success: 200 + data + receipt headers: X-PAYMENT-RESPONSE (v1) and PAYMENT-RESPONSE (v2), containing the on-chain tx hash. Failure: 402 again with a reason.
Canonical prices live in the 402 challenge; this file and openapi.json are references.

## Data routes (GET)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/crypto-price — $0.005 — Live spot crypto price in USD for any pair (BTC, ETH, SOL...), straight from Coinbase. (?pair=BTC-USD)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/usd-price — $0.01 — Batch crypto prices: up to 10 pairs in one request — one call instead of ten. (?pairs=BTC,ETH,SOL)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/fear-greed — $0.005 — Crypto Fear & Greed Index with 10-day history — market sentiment for timing decisions.
- https://mnogo-deneg.makar52nn2016.workers.dev/api/crypto-news — $0.01 — Top crypto headlines with links, aggregated live from Cointelegraph, Decrypt and Bitcoin Magazine RSS. (?limit=10)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/ai-chat — $0.002 — Cheapest LLM chat on the Bazaar: ?q= your question, get a model answer. No API key, pay per call in USDC. First call free every day. (?q=вопрос)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/ai-token-audit — $0.01 — Token audit in one call: DexScreener liquidity/price/volume + Fear & Greed + LLM risk verdict fused into one JSON. One payment, three sources. (?token=0x…)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/url-to-text — $0.01 — Any http(s) page as clean plain text in one call - ready for LLM context. No key, no scraping setup. (?url=https://…)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/base-gas — $0.005 — Live Base gas price in gwei via public RPC (15s cache).
- https://mnogo-deneg.makar52nn2016.workers.dev/api/wallet-profile — $0.01 — Base wallet profile in one call: native ETH + USDC balances, nonce, activity level. Three RPC calls replaced by one payment. (?address=0x…)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/erc20-balance — $0.01 — ERC-20 token balance for any Base wallet, decimals applied, human readable. (?address=0x…&token=0x…)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/market-pulse — $0.01 — Market snapshot in one call: multi-coin prices + Fear & Greed + latest Base block. One payment replaces three. (?symbols=BTC,ETH)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/block-number — $0.005 — Latest Base mainnet block height.
- https://mnogo-deneg.makar52nn2016.workers.dev/api/coin-convert — $0.01 — Convert amounts at live Coinbase rates (e.g. BTC to EUR, ETH to USD). (?from=BTC&to=EUR&amount=1)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/btc-halving — $0.01 — BTC halving countdown: blocks left, ETA in days and estimated date.
- https://mnogo-deneg.makar52nn2016.workers.dev/api/weather — $0.005 — Current weather by city name or coordinates: temperature, wind, conditions (open-meteo, 10-min cache). (?city=Moscow)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/hash — $0.003 — SHA digest of any text: sha1/sha256/sha384/sha512, hex or base64 output. (?text=…&algo=sha256&enc=hex)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/time — $0.003 — Current time: UTC ISO string, unix timestamp and any IANA timezone. (?tz=Europe/Moscow)
- https://mnogo-deneg.makar52nn2016.workers.dev/api/uuid — $0.003 — Cryptographically random UUID v4, up to N at once. (?n=5)

## AI tools (POST /execute/<name>)
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/ai.chat — $0.002 — Cheapest LLM chat completion on the Bazaar: messages array (or q) in, model answer out. No key, no subscription - one USDC call. (body: {"messages":[{"role":"user","content":"…"}]} или {"q":"…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/ai.url-research — $0.01 — Ask any question about any URL: fetches the page, extracts text, returns an LLM answer grounded in the page content. Reader + LLM fused, one payment. (body: {"url":"https://…","question":"…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/ai.news-brief — $0.01 — Live news brief on any topic: fresh Google News headlines fetched at call time + LLM summary (5 bullets). News API + summarizer replaced by one payment. (body: {"topic":"base chain"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/token.verdict — $0.01 — Analyst-grade token verdict: live price/liquidity/volume from DexScreener + Fear & Greed + LLM conclusion with risk score 0-100. Three sources, one call. (body: {"address":"0x…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/token.honeypot — $0.01 — Honeypot/scam risk check for a Base token: liquidity + LP heuristics scored 0-100, LLM explains the flags. Honest method: heuristics, not tx simulation. (body: {"address":"0x…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/crypto.price — $0.005 — Spot price of any coin by symbol. (body: {"symbol":"BTC"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/crypto.feargreed — $0.005 — Crypto Fear & Greed Index with 10-day history. (body: {})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/crypto.news — $0.01 — Crypto headlines with links from live RSS feeds. (body: {"limit":10})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/crypto.market-pulse — $0.01 — Prices for a symbol list + Fear & Greed + latest Base block in one response. (body: {"symbols":["BTC","ETH"]})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/web.read — $0.01 — Read any web page as clean plain text (up to 8k chars) — ready to paste into an LLM context. (body: {"url":"https://…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/bounty.radar — $0.01 — Live GitHub bounty feed: newest funded issues with repo, link and age, refreshed at call time. For agents hunting paid tasks. (body: {"limit":10})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/wallet.profile — $0.01 — Base wallet profile: native ETH + USDC balances, nonce and activity level in one response. (body: {"address":"0x…"})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/gas.base — $0.005 — Live Base gas price in gwei (15s cache). (body: {})
- https://mnogo-deneg.makar52nn2016.workers.dev/execute/ai.research-pro — $0.02 — All-in-one token research: live prices + Fear & Greed + fresh news + LLM verdict fused into one JSON. One payment replaces four calls. (body: {"symbol":"BTC"} или {"address":"0x…"})

## Free routes
- https://mnogo-deneg.makar52nn2016.workers.dev/health — service status
- https://mnogo-deneg.makar52nn2016.workers.dev/tools — tool list (JSON)
- https://mnogo-deneg.makar52nn2016.workers.dev/openapi.json — OpenAPI reference
- https://mnogo-deneg.makar52nn2016.workers.dev/.well-known/x402.json — machine-readable catalog (CDP Bazaar format)
- https://mnogo-deneg.makar52nn2016.workers.dev/pay — human checkout: buy any catalog item from a MetaMask browser (EIP-3009 signTypedData_v4)
- https://mnogo-deneg.makar52nn2016.workers.dev/ — landing page