Spread Paywall API

https://workspace-x402-paywall.onrender.com/ai/image

● healthy a2a-agent

Pay-per-call x402 API - 186 endpoints of live market, prediction-market and crypto data for agents. No accounts, no API keys; payment is the auth.

Paid verification

How it works

No sponsored paid call yet.

Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.

Quality grade

How grading works

A 72.0 / 100

Availability 20.0 / 20

Endpoint responded (HTTP 402)

Payability 15.0 / 15

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 15.6 / 35

26 distinct payers, 376 USDC transfers in the last 30 days; the wallet is shared by 2 listings, so each is credited 1/2

Performance 9.4 / 10

Last probe answered in 304 ms (full marks at 200 ms or less)

Readiness 12.0 / 15

Agent readiness 80/100

Owner verified 0.0 / 5

Nobody has claimed this listing yet

Endpoint last checked 19 h ago. On-chain activity last read 35 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

A · 93/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 72.0/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements	10/10	Payment requirements carry a payee, a mainnet network and a price.
Live 402 challenge	25/25	Paid endpoint answers with an HTTP 402 challenge (304 ms).
x402 version	n/a	x402 version not observed yet.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	15/15	1/1 probes succeeded; final after 5 probes in 30 days.
Resource declaration	10/10	Declares 186 paid resource(s).
Verified identity	5/10	Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags	5/5	seen in a source within 7 days; declares x402.
Security declaration	n/a	Payment is the access control for an x402 resource.

Applicable criteria total 75 points, scaled to 100.

Responsiveness: Responsive (304 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 94% of peers; This listing 93 · peer median 78
Latency: Faster than 35% of peers; This listing 304 ms · peer median 205 ms

Where it loses the most points, and how to win them back

Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.

How many agent tools actually work · All statistics

Paid endpoints

186 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

GET https://workspace-x402-paywall.onrender.com/ai/ask

Ask an LLM anything: sends a text prompt and returns the generated answer as text - general-purpose inference (reasoning, drafting, summarization, Q&A) for agents without their own model key

GET https://workspace-x402-paywall.onrender.com/ai/image

Generates a 1024x1024 image from a text description and returns a ready-to-use image URL - illustrations, thumbnails and visual assets on demand

GET https://workspace-x402-paywall.onrender.com/ai/models

Returns a JSON array of the AI models this API can serve (live from the upstream provider), each with name, description and capabilities

GET https://workspace-x402-paywall.onrender.com/markets/polymarket

Returns a JSON array of live Polymarket prediction market events with odds and volume

GET https://workspace-x402-paywall.onrender.com/politics/markets

Returns a JSON array of live Polymarket politics events (US and global) with odds and volume

GET https://workspace-x402-paywall.onrender.com/politics/polymarket

Returns a JSON array of live Polymarket politics events (US and global) with odds and volume - same data as /politics/markets, named to mirror /politics/kalshi

GET https://workspace-x402-paywall.onrender.com/politics/kalshi

Returns a JSON array of Kalshi politics market events with prices in dollars (implied probability) and volume - default series is KXFEDEND (Will Trump end the Federal Reserve); pass any politics series ticker (2,000+ exist, e.g. KXPARTYLEAVE, KXELECTIONBILL)

GET https://workspace-x402-paywall.onrender.com/politics/headlines

Returns a JSON array of today's top global news stories (Wikipedia In the News - politics, conflicts, elections, diplomacy) with the article topics for each story

GET https://workspace-x402-paywall.onrender.com/markets/fear-greed

Returns a JSON object with the current Crypto Fear and Greed Index value (0-100), its classification (Extreme Fear to Extreme Greed) and the reading timestamp

GET https://workspace-x402-paywall.onrender.com/defi/stablecoins

Returns a JSON array of the top stablecoins by circulating supply with live price and peg type - for peg-deviation and stablecoin market monitoring

GET https://workspace-x402-paywall.onrender.com/defi/protocols

Returns a JSON array of the top DeFi protocols by total value locked (TVL) with 1-day and 7-day TVL change percentages and category

GET https://workspace-x402-paywall.onrender.com/edgar/company

Returns a JSON object resolving a US stock ticker to its SEC EDGAR company record: CIK number, legal company name and the EDGAR submissions URL for filings

GET https://workspace-x402-paywall.onrender.com/sports/ufc

Returns a JSON array of UFC events from the ESPN MMA scoreboard with status and the fight card: each bout with both fighters and the odds summary when ESPN carries one

GET https://workspace-x402-paywall.onrender.com/sports/ufc-odds

Returns a JSON array of live Polymarket UFC markets (fight winner markets and UFC futures) with current Yes/No prices per outcome

GET https://workspace-x402-paywall.onrender.com/ref/countries

Returns country profiles from the World Bank: name, capital, region, income level and coordinates for one country by ISO code (e.g. US, DE, JP) or code=all for every country

GET https://workspace-x402-paywall.onrender.com/markets/kalshi

Returns a JSON array of live Kalshi prediction market events with prices in dollars (implied probability), volume and close times - politics, economics, sports, climate, tech and more

GET https://workspace-x402-paywall.onrender.com/sports/kalshi

Returns a JSON array of Kalshi game-winner markets for a league (NHL, NBA, NFL, MLB, FIFA World Cup) with live bid/ask/last prices in dollars = implied win probability for each team

GET https://workspace-x402-paywall.onrender.com/sports/polymarket

Returns a JSON array of Polymarket sports markets for a league (NHL, NBA, NFL, MLB, EPL, soccer) - futures and game markets with odds, mirroring /sports/kalshi on the other venue

GET https://workspace-x402-paywall.onrender.com/sports/scores

Returns a JSON array of games for a league (NHL, NBA, NFL, MLB, FIFA World Cup, EPL, FIFA qualifiers) with live scores, status/clock and betting odds (spread, over/under, details, provider) when available

GET https://workspace-x402-paywall.onrender.com/fun/trivia

Returns a JSON array of trivia questions with category, difficulty, the correct answer and all answer options (Open Trivia DB)

GET https://workspace-x402-paywall.onrender.com/fun/joke

Returns a random joke (safe-mode) as a JSON object with the joke text or a setup/delivery pair - categories include Programming, Misc, Pun, Spooky, Christmas or Any

GET https://workspace-x402-paywall.onrender.com/fun/pokemon

Returns a JSON object with Pokedex data for a Pokemon by name (or a random one): types, abilities, base stats and sprite URL

GET https://workspace-x402-paywall.onrender.com/fun/xkcd

Returns a JSON object with an xkcd comic (latest by default, or by number): title, image URL and alt text

GET https://workspace-x402-paywall.onrender.com/fun/chuck

Returns a random Chuck Norris joke as a JSON object

GET https://workspace-x402-paywall.onrender.com/fun/dog

Returns a JSON object with a random dog photo URL and its breed

GET https://workspace-x402-paywall.onrender.com/fun/advice

Returns a JSON object with a random piece of advice

GET https://workspace-x402-paywall.onrender.com/fun/fact

Returns a JSON object with a random interesting fact and its source

GET https://workspace-x402-paywall.onrender.com/crypto/prices

Returns a JSON array of top cryptocurrencies by market cap with USD prices

GET https://workspace-x402-paywall.onrender.com/crypto/ohlcv

Returns the latest OHLCV candles (open, high, low, close, volume) for a crypto coin such as btc-bitcoin - price history for charting, backtests and momentum checks without a market-data subscription

GET https://workspace-x402-paywall.onrender.com/btc/fees

Returns a JSON object with current Bitcoin network fee estimates in satoshis per vByte

GET https://workspace-x402-paywall.onrender.com/defi/tvl

Returns a JSON array of total value locked figures across 468 blockchain chains

GET https://workspace-x402-paywall.onrender.com/defi/yields

Returns a JSON array of top DeFi yield pools sorted by APY percentage

GET https://workspace-x402-paywall.onrender.com/fx/rates

Returns current European Central Bank reference FX rates for a base currency (default USD), optionally filtered to specific symbols - currency tables for pricing, accounting and travel agents

GET https://workspace-x402-paywall.onrender.com/fx/convert

Converts an amount between any two ISO currency codes at the current rate and returns the rate used plus the converted result - one-call currency math for commerce and travel agents

GET https://workspace-x402-paywall.onrender.com/weather/current

Returns a JSON object with current weather conditions and forecast for a location

GET https://workspace-x402-paywall.onrender.com/geo/ip

Returns a JSON object with city, country, latitude, and longitude for an IPv4 or IPv6 address string

GET https://workspace-x402-paywall.onrender.com/geo/zip

Resolves a postal code plus country to its place(s): name, state and latitude/longitude for each - address normalization and location lookup for logistics and commerce agents

GET https://workspace-x402-paywall.onrender.com/geo/sun

Returns a JSON object with sunrise and sunset times as ISO 8601 strings for given coordinates

GET https://workspace-x402-paywall.onrender.com/geo/elevation

Returns the ground elevation in meters for any latitude/longitude point - terrain context for mapping, routing, hiking and site-planning agents

GET https://workspace-x402-paywall.onrender.com/gov/fbi

Returns a JSON array of FBI wanted persons with names, charges, and descriptions

GET https://workspace-x402-paywall.onrender.com/gov/federal-register

Returns a JSON array of recent US federal register documents with titles and dates

GET https://workspace-x402-paywall.onrender.com/gov/datasets

Returns a JSON array of US government datasets matching the query string

GET https://workspace-x402-paywall.onrender.com/finance/tickers

Returns a JSON array of all US public company ticker symbols with CIK numbers

GET https://workspace-x402-paywall.onrender.com/health/trials

Returns a JSON array of clinical trials matching the query with phase, status, and conditions

GET https://workspace-x402-paywall.onrender.com/health/gene

Returns a JSON object with gene annotations and identifiers for a gene symbol string

GET https://workspace-x402-paywall.onrender.com/science/papers

Returns a JSON array of scholarly papers matching the query with titles, authors, and DOIs

GET https://workspace-x402-paywall.onrender.com/science/quakes

Returns a JSON array of recent earthquakes with magnitude, location, and timestamp from USGS

GET https://workspace-x402-paywall.onrender.com/space/iss

Returns a JSON object with the current latitude and longitude of the International Space Station

GET https://workspace-x402-paywall.onrender.com/space/spacex

Returns a JSON object with details of the most recent SpaceX launch

GET https://workspace-x402-paywall.onrender.com/dev/stackoverflow

Returns a JSON array of Stack Overflow questions matching the query with titles and scores

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://workspace-x402-paywall.onrender.com/ai/image  # expect HTTP 402 Payment Required (about 0.01 USDC/call)

/.well-known/x402.json

https://workspace-x402-paywall.onrender.com/.well-known/x402

Listed in

Directories this entry was found in.

a2a since 2026-11-11