Discover / api.agentstools.dev

web-news

■ Challenge detected

Keyword news search across web news engines (Bing/DuckDuckGo/Yahoo via ddgs). Returns dated headlines with title/url/snippet/source/image + freshness/region/safesearch filters.

Listed price
$0.003
Challenge detected
10 of the last 10 checks
Median response
412 ms
Last checked
17 Oct, 07:50 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://api.agentstools.dev/search/news
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
148 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://api.agentstools.dev

  • GET/btc/mempool$0.005Live Bitcoin mempool snapshot: unconfirmed transaction count, total virtual size and total fees, a fee-rate histogram broken into buckets, and an estimated block backlog. Informational, not advice.
  • GET/treasury/debt$0.01US federal debt from the Treasury Debt to the Penny series, split into debt held by the public and intragovernmental holdings, fused with interest expense on the debt. Returns the latest value, the history over a window and computed net issuance plus public and intragovernmental shares. Values are cited to Treasury Fiscal Data.
  • GET/crypto/sentiment-tag$0.003Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.
  • GET/prediction/search$0.01Cross-venue prediction-market search: one query returns a ranked list of NORMALIZED markets from Polymarket (real-money) and Manifold (play-money) under one schema — implied probability, outcomes, volume, liquidity, close date, status, money_type and a link-back. One call instead of hitting each venue's API and reconciling their shapes.
  • GET/treasury/cash$0.01The US Treasury operating cash balance (the Treasury General Account) from the Daily Treasury Statement. Returns the latest TGA closing balance, the history over a window and the computed daily change flagged as a build or a drawdown. Cited to Treasury Fiscal Data.
  • GET/rwa/yield$0.008Yield facet for a tokenized-RWA product: pool-level APY, base APY, reward APY, the 30-day mean APY and the 30-day change, plus a TVL-weighted average across the product's pools, from the DefiLlama yields feed. Reports availability false when the product has no tracked pools. Cited to the open-data source.
  • GET/match/key$0.005Compute a deterministic similarity key for a name or address: the cheap first step of client-side blocking and deduplication. Records that share a key are duplicate candidates to confirm. Returns the key, the normalized form and the tokens. Indicators, not authoritative identity resolution.
  • GET/wallet/balances$0.005Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on other networks pass explicit 0x token addresses.
  • GET/stablecoin/peg$0.008Peg facet for a stablecoin: current price, the absolute deviation from the one-dollar peg, a coarse depeg status of stable, watch or depegged, and the collateral mechanism with a note. The cheap grain for monitoring whether a dollar token is holding its peg. Cited to the open-data source.
  • GET/aeo/audit$0.02AI-search visibility (AEO) audit of a website for answer engines and agents. Fetches the target's own public surface and computes a composite visibility score 0-100 with a rating (poor, fair, good, excellent) across six axes: answerability, structured data, AI-crawler access, crawlability, llms.txt readiness and MCP well-known readiness, plus a prioritized list of fixes. Deterministic, no LLM. Visibility indicators, not a guarantee.
  • GET/kyb/verify$0.02Verify a business is real and get a legitimacy verdict plus a 0-100 risk score. Give one of name, lei, cik, ticker, isin or qid and get a verdict (real, likely_real, inactive, dissolved or not_found), a risk category, per-dimension flags, reasons, the official registry and which registries corroborated. Deterministic scoring, no LLM. Legitimacy indicators, not legal or credit advice.
  • GET/rwa/list$0.005Catalog of tokenized real-world-asset products ranked by TVL, from the DefiLlama RWA universe. Each row carries slug, name, symbol, normalized sub-category, backing type, issuer, DefiLlama category, total value locked and the chains it lives on. Optionally filter by sub-category, chain or issuer. The cheap first step that resolves a name to the slug the other routes use.
  • GET/enrich/email$0.005Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailboxes (privacy + ToS).
  • GET/approvals/wallet$0.02Standing-state audit of a wallet's live ERC-20 token approvals. Indexes every approval the address ever granted, filters to those still live on-chain, flags unlimited, stale, scam-listed and canonical spenders, estimates money-at-risk, and returns a ranked revoke plan with ready calldata plus a 0-100 risk and allow, warn or block verdict. Risk indicators, not advice.
  • GET/search$0.003Free-text web search for AI agents: ranked title/url/snippet results fused across multiple engines (Brave, Google, DuckDuckGo, Mojeek, Startpage, Yahoo), with freshness filters (past day/week/month/year), region/locale and SafeSearch. One call for grounded, up-to-date web results — no keys, no scraping setup.
  • GET/btc/tx$0.01Decoded Bitcoin transaction by txid: inputs and outputs, fee, size, weight and virtual size, replace-by-fee flag, and confirmation status with a confirmation count. Informational, not advice.
  • GET/address/labels$0.02Identify what an EVM address IS in one keyless call: contract/protocol identity (entity, name, category) from Open Labels Initiative attestations with trusted-attester consensus, plus on-chain truth (is_contract, code_hash), reverse ENS/Basename, sanctions (OFAC/UK/EU/UN) and scam-drainer flags. Cited provenance; unknown addresses answer with empty labels, never a 404.
  • GET/travel/visa$0.008Visa requirement for a passport and destination pair from a community visa-matrix. Returns the normalized requirement such as visa free, visa on arrival, e-visa, electronic travel authorization or visa required, with the visa-free day allowance where applicable. Indicative, not authoritative. Verify with the embassy.
  • GET/crypto/sentiment-dsc$0.003Crypto Fear & Greed Index: the market Fear & Greed value, classification and trend, blended with aggregated crypto news-headline sentiment into one bullish/bearish/neutral score, optionally focused on a coin or query. Data by alternative.me (attributed) + curated RSS headlines.
  • GET/depin/network$0.02Network health and token-economics verdict for a DePIN network from public data. Give network (helium) and get coverage size (IOT and MOBILE node counts), token supply for HNT, IOT, MOBILE and DC read on-chain, the emission and halving context, and a coverage-scale indicator. Each value is cited to its source.
  • GET/scholar/oa$0.008Locate a free open-access PDF for a DOI. Returns whether an open-access copy exists and the best PDF link with its license, version and host type, from Unpaywall and OpenAlex. A cheap, focused open-access locator.
  • GET/derivs/basis$0.008Perpetual basis for an asset: the mark-versus-oracle premium on venues that publish a native mark price (Hyperliquid), in basis points, with a naive annualized carry proxy. Shows how far the perpetual trades from the underlying oracle — a froth and leverage-cost signal.
  • GET/contract/source$0.02Fetch a verified smart-contract's full source, ABI, compiler settings and NatSpec docs for an EVM address, and automatically resolve a proxy to its implementation so the response also carries the implementation ABI. One call returns everything an audit or integration agent needs to understand the contract, keyless and pay-per-call. Unverified contracts are reported honestly.

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

Showing 23 of 148 listed endpoints. First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/api.agentstools.dev

Recent checks

28 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, 07:50 UTCChallenge detected402395ms
15 Oct, 23:42 UTCChallenge detected402420ms
14 Oct, 17:17 UTCChallenge detected402385ms
12 Oct, 15:35 UTCChallenge detected402485ms
10 Oct, 21:52 UTCChallenge detected402379ms
9 Oct, 15:32 UTCChallenge detected402400ms
8 Oct, 12:43 UTCChallenge detected402451ms
7 Oct, 09:33 UTCChallenge detected402423ms
6 Oct, 09:33 UTCChallenge detected402547ms
28 Sept, 05:02 UTCChallenge detected402403ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 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 web-news?

Its listed price is $0.003.

What payment terms does web-news advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is web-news listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

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