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https://api.lilambd.com/agents/mcp
● healthy model-context-protocol-mcp

21 world data tools: airports, units, markets, security, travel meds, pet entry. x402 per call.

Category
model-context-protocol-mcp
Chains
base
Price
$0.0050–$0.5000 USDC

Quality grade

How grading works
C+ 47.8 / 100
Availability 20.0 / 20
Endpoint responded (HTTP 200)
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 0.0 / 35
0 distinct payers, 0 USDC transfers in the last 30 days; the wallet is shared by 2 listings, so each is credited 1/2
Performance 0.0 / 10
Last probe answered in 3084 ms (full marks at 200 ms or less)
Readiness 12.8 / 15
Agent readiness 85/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 18 h ago. On-chain activity last read 34 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

B · 85/100

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 C+, 47.8/100), 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 19/25 Endpoint reachable; its 402 challenge was seen earlier (3084 ms); slow response -1.
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 9/9 probes succeeded over 30 days (100%).
Resource declaration 10/10 Declares 248 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: Slow (3084 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 71% of peers
This listing 85 · peer median 78
Latency
Faster than 4% of peers
This listing 3,084 ms · peer median 205 ms

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

  • Live 402 challenge −6 — Answer the paid path with a valid 402 challenge.
    Now: Endpoint reachable; its 402 challenge was seen earlier (3084 ms); slow response -1.
  • 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

248 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://api.lilambd.com/agents/mcp $0.0050 / call

AI Agent Economy Census: Search MCP servers

GET https://api.lilambd.com/agents/x402 $0.0050 / call

AI Agent Economy Census: Search paid endpoints

GET https://api.lilambd.com/agents/mcp/new $0.0050 / call

AI Agent Economy Census: Newly published MCP servers

GET https://api.lilambd.com/agents/summary $0.0050 / call

AI Agent Economy Census: Today's census

GET https://api.lilambd.com/agents/counters $0.0050 / call

AI Agent Economy Census: Ecosystem counters

GET https://api.lilambd.com/agents/x402/new $0.0050 / call

AI Agent Economy Census: New endpoints

GET https://api.lilambd.com/agents/mcp/daily $0.0050 / call

AI Agent Economy Census: MCP servers per day

GET https://api.lilambd.com/agents/x402/daily $0.0050 / call

AI Agent Economy Census: Daily new endpoints

GET https://api.lilambd.com/agents/x402/hosts $0.0050 / call

AI Agent Economy Census: Hosts

GET https://api.lilambd.com/agents/mcp/namespaces $0.0050 / call

AI Agent Economy Census: MCP namespaces

GET https://api.lilambd.com/agents/x402/categories $0.0050 / call

AI Agent Economy Census: Prices by category

GET https://api.lilambd.com/agents/x402/price-check?price=0.05 $0.0050 / call

AI Agent Economy Census: Check a price

GET https://api.lilambd.com/airports/nearby?lat=35.68&lon=139.76 $0.0050 / call

Airports of the World: Nearby airports

GET https://api.lilambd.com/airports/search $0.0050 / call

Airports of the World: Search airports

GET https://api.lilambd.com/biodiversity/gaps $0.0050 / call

Biodiversity by Place: Least-recorded places

GET https://api.lilambd.com/biodiversity/cells $0.0050 / call

Biodiversity by Place: List cells

GET https://api.lilambd.com/biodiversity/place?lat=35.68&lon=139.76 $0.0050 / call

Biodiversity by Place: Biodiversity at a place

GET https://api.lilambd.com/biodiversity/admin1?country=JP $0.0050 / call

Biodiversity by Place: Admin1 regions of a country

GET https://api.lilambd.com/biodiversity/nearby?lat=-33.87&lon=151.21 $0.0050 / call

Biodiversity by Place: Cells around a point

GET https://api.lilambd.com/biodiversity/decades $0.0050 / call

Biodiversity by Place: Records by decade

GET https://api.lilambd.com/biodiversity/summary $0.0050 / call

Biodiversity by Place: World summary

GET https://api.lilambd.com/biodiversity/countries $0.0050 / call

Biodiversity by Place: Rank countries

GET https://api.lilambd.com/budget-inflation/answer?countries=DEU%2CJPN $0.5000 / call

How do households in these countries split their budget, and how much inflation do food and energy add?: Budget shares and weighted food/energy inflation

GET https://api.lilambd.com/budget-inflation/countries $0.5000 / call

How do households in these countries split their budget, and how much inflation do food and energy add?: Countries with OECD household consumption by purpose

GET https://api.lilambd.com/calendars/days $0.0050 / call

World Calendars and Date Conversion API: Rows of the day table: each day 2026-2030 in 11 calendars

GET https://api.lilambd.com/calendars/convert $0.0050 / call

World Calendars and Date Conversion API: Finished answer: one Gregorian date in every calendar, with weekday name, festivals and solar term that day

GET https://api.lilambd.com/calendars/paydays $0.0050 / call

World Calendars and Date Conversion API: Pension, social security and statutory bonus paydays in 14 countries, 2026-2030, already moved to the real business day

GET https://api.lilambd.com/calendars/systems $0.0050 / call

World Calendars and Date Conversion API: All 15 calendar systems with English rules, epoch and how many countries use them

GET https://api.lilambd.com/calendars/era-names $0.0050 / call

World Calendars and Date Conversion API: Era names for a calendar in a locale (CLDR 49)

GET https://api.lilambd.com/calendars/festivals $0.0050 / call

World Calendars and Date Conversion API: Festival dates 2026-2030 computed from their own calendars, with the countries that have a public holiday that day

GET https://api.lilambd.com/calendars/month-names $0.0050 / call

World Calendars and Date Conversion API: Month names for a calendar in a locale (CLDR 49)

GET https://api.lilambd.com/calendars/solar-terms $0.0050 / call

World Calendars and Date Conversion API: The 24 solar terms with UTC time to the second and the date in Beijing and Tokyo

GET https://api.lilambd.com/calendars/to-gregorian $0.0050 / call

World Calendars and Date Conversion API: Convert a date in another calendar to Gregorian (arithmetic calendars any year; table calendars 2026-2030)

GET https://api.lilambd.com/calendars/weekday-names $0.0050 / call

World Calendars and Date Conversion API: Weekday names in a locale

GET https://api.lilambd.com/cit-rate-changes/years $0.5000 / call

Which countries raised or cut their corporate tax rate between two years, and where does a country rank now?: Years covered with median rate

GET https://api.lilambd.com/cit-rate-changes/answer?from=2020 $0.5000 / call

Which countries raised or cut their corporate tax rate between two years, and where does a country rank now?: Corporate tax rate changes between two years

GET https://api.lilambd.com/city-dossier/answer?city=Lviv $0.1000 / call

What is this city like, in one page of measured facts?: One-page dossier for one city

GET https://api.lilambd.com/city-dossier/search?q=Par $0.1000 / call

What is this city like, in one page of measured facts?: Find city_id by name prefix (up to 20)

GET https://api.lilambd.com/city-dossier/countries $0.1000 / call

What is this city like, in one page of measured facts?: Countries covered and city counts

GET https://api.lilambd.com/colors/random $0.0050 / call

Color Names: 30,000+ Named Colors: Random palette

GET https://api.lilambd.com/colors/search $0.0050 / call

Color Names: 30,000+ Named Colors: Search names

GET https://api.lilambd.com/colors/nearest?hex=ff8800 $0.0050 / call

Color Names: 30,000+ Named Colors: Nearest color name

GET https://api.lilambd.com/conflict/top $0.0050 / call

Armed Conflict Events by Country and Region: Top list

GET https://api.lilambd.com/conflict/regions $0.0050 / call

Armed Conflict Events by Country and Region: Regions

GET https://api.lilambd.com/cve-priority/answer?vendor=fortinet $0.5000 / call

Which vulnerabilities in this vendor's products should I patch first?: Patch-priority list for a vendor/product

GET https://api.lilambd.com/cve-priority/kev-recent $0.5000 / call

Which vulnerabilities in this vendor's products should I patch first?: Recently added CISA KEV entries with EPSS and CVSS

GET https://api.lilambd.com/disaster-exposure/ $0.5000 / call

How many deadly earthquakes, tsunamis and eruptions has this place seen since 1900?: List routes

GET https://api.lilambd.com/disaster-exposure/answer?lat=35.68&lon=139.77 $0.5000 / call

How many deadly earthquakes, tsunamis and eruptions has this place seen since 1900?: Significant quakes, tsunamis and eruptions near a point since a year

GET https://api.lilambd.com/disaster-exposure/decades $0.5000 / call

How many deadly earthquakes, tsunamis and eruptions has this place seen since 1900?: Significant hazard records and deaths on records per decade since 1900

GET https://api.lilambd.com/energy-bill-hours/answer?country=DE $0.5000 / call

What does a household's yearly electricity and gas cost in an EU country, and how many hours of work pay for it?: Household energy bill and hours of work

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://api.lilambd.com/agents/mcp  # expect HTTP 402 Payment Required (about 0.005 USDC/call)
MCP endpoint
https://api.lilambd.com/mcp
/.well-known/x402.json
https://api.lilambd.com/.well-known/x402

Listed in

Directories this entry was found in.

mcp since 2026-11-04