Discover / x402-seller-pmlm.onrender.com

Research Brief with Citations

■ Challenge detected

Ask a question, get a short cited answer in one call. Returns a 1-3 sentence answer, key points tied to source ids, and the sources used (typically 1-5: title, URL, publisher, date, supporting quote), plus confidence with a reason and a free permalink. Sources: Wikipedia first, plus Stack Overflow, GitHub, Crossref papers, official docs when relevant. Best for definitions, overviews, how-it-works, history. Example: "What is the Model Context Protocol?". 0.01 USDC/call; failed calls are free.

Listed price
$0.01
Challenge detected
10 of the last 10 checks
Median response
366 ms
Last checked
17 Oct, 09:26 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://x402-seller-pmlm.onrender.com/report
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
13 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://x402-seller-pmlm.onrender.com

  • GET/rug-checkNo price listedRugRadar: Solana rug check and rug pull checker for pump.fun memecoins, plus BNB rug check / BSC honeypot check (four.meme rug check), Base, Ethereum, Arbitrum via chain=. Returns a 0-100 risk score and plain reasons: mint/freeze authority, top-holder concentration, liquidity, token age, deployer launches that died, linked funder. Prepaid credits: ~2.3s vs ~4.0s per check (1.8x faster, measured). Automated heuristic, may be wrong. Not financial advice. 0.01 USDC/call; failed calls are free.
  • GET/reportNo price listedAsk a question, get a short cited answer in one call. Returns a 1-3 sentence answer, key points tied to source ids, and the sources used (typically 1-5: title, URL, publisher, date, supporting quote), plus confidence with a reason and a free permalink. Sources: Wikipedia first, plus Stack Overflow, GitHub, Crossref papers, official docs when relevant. Best for definitions, overviews, how-it-works, history. Example: "What is the Model Context Protocol?". 0.01 USDC/call; failed calls are free.
  • GET/token-safetyNo price listedRugRadar token safety and honeypot check: token scam check and memecoin risk score for Solana (pump.fun), BNB (four.meme), Base, Ethereum, Arbitrum (chain=). Returns a 0-100 risk score with plain reasons: honeypot simulation (EVM), mint/freeze authority, top-holder share, liquidity, age, deployer launches that died, linked funder. Same engine as /rug-check. Automated heuristic, may be wrong. Not financial advice. 0.002 USDC/call; failed calls are free.
  • GET/balanceNo price listedWallet balance: token balances and USD portfolio value for any wallet, read live onchain. EVM (Ethereum, Base, Arbitrum, Polygon in one call; ENS names work) or Solana (SOL + SPL tokens). Use to check a wallet before paying, trading or airdrops. Pass address, optional chain and tokens. Returns per-chain native + ERC-20/SPL balances, prices and total USD. 0.003 USDC/call; failed calls are free.
  • GET/solana-priceNo price listedSolana token price: live USD price of any SPL token or memecoin by symbol or mint, incl. pump.fun tokens, read onchain from Orca, Raydium CLMM, PumpSwap and pump.fun bonding curves (no third-party API). Pass token (SOL, JUP, BONK, WIF... or mint). Returns price, supply, FDV, pools with depth, spread, confidence, slot. 0.002 USDC/call; failed calls are free.
  • GET/checkNo price listedx402 endpoint check: validate an x402 endpoint and audit its Bazaar listing before you pay for it or list it. One unpaid probe (never pays the target) grades the 402 challenge, schemas, examples, name, tags and latency, and adds Coinbase's validator verdict, the live Bazaar listing (30-day calls, payers, stale metadata) and search rank for its own name and tags. Returns score, grade and prioritized fixes. 0.005 USDC/call; failed calls are free.
  • GET/priceNo price listedCrypto token price: live USD price, 24h change, total supply and FDV for any token, read onchain from DEX pools (Uniswap v3 on Ethereum, Base, Arbitrum, Polygon; Orca, Raydium, PumpSwap on Solana), so every number is verifiable. Pass token (ETH, BTC, SOL, PEPE... or contract/mint address), optional chain. Returns price, change, pools, depth, spread, confidence, block. 0.001 USDC/call; failed calls are free.
  • GET/newsNo price listedNews search: latest news headlines on any topic from thousands of outlets, updated every 15 minutes. Use when an agent needs what happened in the last 1-7 days (companies, crypto, politics, sports, tech). Pass q (keywords). Returns deduplicated headlines with outlet, link, publish time and match score from the GDELT global news index, major outlets and Hacker News. 0.005 USDC/call; failed calls are free.
  • GET/gasNo price listedGas price: live gas fees for Ethereum, Base, Arbitrum, Polygon and Solana in one call. Use before sending a transaction to pick a fee or the cheapest chain. Returns base fee, slow/standard/fast priority fees, max fee, congestion, and the USD cost of a transfer, an ERC-20 transfer and a swap per chain, plus Solana priority fees. Optional chain. 0.001 USDC/call; failed calls are free.
  • GET/readNo price listedURL to markdown: read any web page as clean, LLM-ready markdown. Use when an agent has a URL (article, docs, blog, product page) and needs the text without HTML, scripts or menus, e.g. to scrape article text or feed a page to an LLM. Pass url (https). Returns title, description, publish date, markdown, word count, headings and links. 0.005 USDC/call; failed calls are free.
  • GET/searchNo price listedWeb search API (SERP) with page text: like a search API key, pay per call. Pass q, optional n (1-10, default 5). Returns ranked results with title, url, domain, snippet, publish date and up to 1500 chars of cleaned main text from each page, fetched live, so agents can answer without opening links. Fresh results for news, docs, products, local businesses, definitions. 0.01 USDC/call; failed calls are free.
  • GET/honeypot-checkNo price listedHoneypot check: can I sell this token? RugRadar honeypot detector for new tokens on Base, BNB (BSC), Ethereum, Arbitrum (simulated buy and sell via GoPlus: is_honeypot, can sell, buy/sell tax, owner can pause/blacklist/mint) and Solana (freeze authority = honeypot pattern). Returns 0-100 risk score with plain reasons. Check before an agent buys. Automated heuristic, may be wrong. Not financial advice. 0.002 USDC/call; failed calls are free.
  • GET/txNo price listedDecode transaction: status, receipt and decoded token transfers for any tx hash or Solana signature, read onchain. EVM (auto-detects Ethereum, Base, Arbitrum, Polygon): success/reverted, block time, confirmations, from/to, method, fee in USD, every ERC-20/NFT transfer; flags x402 USDC payments. Solana: status, fee, SOL + token balance changes. Use to verify a payment landed. 0.003 USDC/call; failed calls are free.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 13 of 13 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402-seller-pmlm.onrender.com

Recent checks

29 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.17 Oct 2026
All 10 checks
When (UTC)ResultHTTPResponse
17 Oct, 09:26 UTCChallenge detected402824ms
16 Oct, 08:13 UTCChallenge detected402294ms
14 Oct, 23:56 UTCChallenge detected402390ms
13 Oct, 14:18 UTCChallenge detected402408ms
11 Oct, 12:57 UTCChallenge detected402341ms
10 Oct, 03:32 UTCChallenge detected402139ms
8 Oct, 21:32 UTCChallenge detected402596ms
7 Oct, 15:42 UTCChallenge detected402313ms
6 Oct, 15:31 UTCChallenge detected402444ms
29 Sept, 05:02 UTCChallenge detected402157ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 09:26 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Research Brief with Citations?

Its listed price is $0.01.

What payment terms does Research Brief with Citations advertise?

The listing advertises x402, Arbitrum, Avalanche, Base, EVM chain 1329, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Research Brief with Citations listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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