Agent Tools
List
Back to directory

Apex Edge — x402-paid machine services

https://api.nonsynthetic.net/api/v1/chat/pro
● healthy model-context-protocol-mcp

x402-paid MCP tools & data APIs for agents — USDC on Base + Solana

Category
model-context-protocol-mcp
Chains
base, solana
Price
$0.0030 USDC / call

Quality grade

How grading works
B+ 67.3 / 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 9.9 / 35
9 distinct payers, 683 USDC transfers in the last 30 days; the wallet is shared by 3 listings, so each is credited 1/3; discounted because most transfers come from few payers
Performance 9.8 / 10
Last probe answered in 236 ms (full marks at 200 ms or less)
Readiness 12.6 / 15
Agent readiness 84/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 20 h ago. On-chain activity last read 3 d 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 · 84/100

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 B+, 67.3/100), 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 20/25 Endpoint reachable; its 402 challenge was seen earlier (236 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 18/18 probes succeeded over 30 days (100%).
Resource declaration 8/10 383 paid resources; 50 sampled lack a description.
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 (236 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 67% of peers
This listing 84 · peer median 78
Latency
Faster than 44% of peers
This listing 236 ms · peer median 205 ms

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

  • Live 402 challenge −5 — Answer the paid path with a valid 402 challenge.
    Now: Endpoint reachable; its 402 challenge was seen earlier (236 ms).
  • 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.
  • Resource declaration −2 — Declare each paid resource with its input and output schema.
    Now: 383 paid resources; 50 sampled lack a description.

How many agent tools actually work · All statistics

Paid endpoints

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

https://api.nonsynthetic.net/api/v1/chat/pro
https://api.nonsynthetic.net/api/v1/audit/verdict
https://api.nonsynthetic.net/api/v1/lanes/live
https://api.nonsynthetic.net/api/v1/util/hash
https://api.nonsynthetic.net/api/v1/util/uuid
https://api.nonsynthetic.net/api/v1/util/uuid-batch
https://api.nonsynthetic.net/api/v1/util/base64
https://api.nonsynthetic.net/api/v1/util/time
https://api.nonsynthetic.net/api/v1/util/json-validate
https://api.nonsynthetic.net/api/v1/util/price
https://api.nonsynthetic.net/api/v1/util/jwt-decode
https://api.nonsynthetic.net/api/v1/util/wordcount
https://api.nonsynthetic.net/api/v1/util/slugify
https://api.nonsynthetic.net/api/v1/util/semver
https://api.nonsynthetic.net/api/v1/util/color
https://api.nonsynthetic.net/api/v1/util/cron-next
https://api.nonsynthetic.net/api/v1/util/token
https://api.nonsynthetic.net/api/v1/util/hmac
https://api.nonsynthetic.net/api/v1/util/calc
https://api.nonsynthetic.net/api/v1/util/url-parse
https://api.nonsynthetic.net/api/v1/util/url-encode
https://api.nonsynthetic.net/api/v1/util/ip-info
https://api.nonsynthetic.net/api/v1/util/task-class
https://api.nonsynthetic.net/api/v1/util/date-calc
https://api.nonsynthetic.net/api/v1/util/csv-parse
https://api.nonsynthetic.net/api/v1/util/case
https://api.nonsynthetic.net/api/v1/util/cidr
https://api.nonsynthetic.net/api/v1/util/req-info
https://api.nonsynthetic.net/api/v1/util/env-validate
https://api.nonsynthetic.net/api/v1/util/regex-test
https://api.nonsynthetic.net/api/v1/util/junit
https://api.nonsynthetic.net/api/v1/util/diff
https://api.nonsynthetic.net/api/v1/util/pass-strength
https://api.nonsynthetic.net/api/v1/util/md-lint
https://api.nonsynthetic.net/api/v1/util/board-quote
https://api.nonsynthetic.net/api/v1/util/token-count
https://api.nonsynthetic.net/api/v1/util/json-diff
https://api.nonsynthetic.net/api/v1/util/units
https://api.nonsynthetic.net/api/v1/audit/preflight
https://api.nonsynthetic.net/api/v1/audit/address
https://api.nonsynthetic.net/api/v1/search
https://api.nonsynthetic.net/api/v1/audit/checklist
https://api.nonsynthetic.net/api/v1/audit/honesty
https://api.nonsynthetic.net/api/v1/corpus/bundle
https://api.nonsynthetic.net/api/v1/intel/venue-map
https://api.nonsynthetic.net/api/v1/intel/board-economics
https://api.nonsynthetic.net/api/v1/intel/winner-patterns
https://api.nonsynthetic.net/api/v1/intel/league-live
https://api.nonsynthetic.net/api/v1/util/fetch-lite
https://api.nonsynthetic.net/api/v1/market/perp-funding

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://api.nonsynthetic.net/api/v1/chat/pro  # expect HTTP 402 Payment Required (about 0.003015 USDC/call)
MCP endpoint
https://api.nonsynthetic.net/mcp
/.well-known/x402.json
https://api.nonsynthetic.net/.well-known/x402

Listed in

Directories this entry was found in.

mcp since 2026-10-24 a2a since 2026-10-26