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Solana x402 Microtools

https://solana-x402-microtools-mainnet.valecity.workers.dev/api/crypto
● healthy crypto

Pay-per-call Solana mainnet x402 v2 microtools (USDC via PayAI): Pre-Sign Brief transaction simulation, SPL/Token-2022 mint safety check, Solana new-pool momentum feed (pool-pulse), x402 v2 challenge preflight, Raydium AMM v4 vault ratios, and MET Norway weather.

Category
crypto
Chains
solana
Price
—

Quality grade

How grading works
B 64.2 / 100
Availability 20.0 / 20
Endpoint responded (HTTP 402)
Payability 14.0 / 15
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✗ Price declared
Demand 7.6 / 35
3 distinct payers, 9 USDC transfers in the last 30 days
Performance 8.6 / 10
Last probe answered in 451 ms (full marks at 200 ms or less)
Readiness 14.0 / 15
Agent readiness 93/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 18 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

A · 91/100

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, 64.2/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements 9/10 Findings: missing: price declared.
  • missing: price declared
Live 402 challenge 25/25 Paid endpoint answers with an HTTP 402 challenge (451 ms).
x402 version n/a x402 version not observed yet.
Signed descriptor n/a No x402 standard defines a signed descriptor.
Uptime (30 days) 14.35/15 22/23 probes succeeded over 30 days (96%).
Resource declaration 10/10 Declares 6 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 (451 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, catalog_listing. 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 91% of peers
This listing 91 · peer median 78
Latency
Faster than 23% of peers
This listing 451 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.
  • Valid payment requirements −1 — Return complete payment requirements in the 402 challenge.
    Now: Findings: missing: price declared.
  • Uptime (30 days) −0.7 — Stay reachable in our daily probes.
    Now: 22/23 probes succeeded over 30 days (96%).

How many agent tools actually work · All statistics

Paid endpoints

6 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://solana-x402-microtools-mainnet.valecity.workers.dev/api/preflight

Probe one public HTTPS URL without following redirects; inspect x402 v2 challenge

GET https://solana-x402-microtools-mainnet.valecity.workers.dev/api/crypto

Indicative Solana Raydium AMM v4 vault ratios for SOL-USDC and RAY-USDC; not executable quotes or trending

GET https://solana-x402-microtools-mainnet.valecity.workers.dev/api/weather

Next six forecast points for coordinates or a supported city, MET Norway CC BY 4.0

GET https://solana-x402-microtools-mainnet.valecity.workers.dev/api/token-check

Solana SPL / Token-2022 mint safety check: mint & freeze authority, risky Token-2022 extensions (permanent delegate, transfer hook, transfer fee, pausable, non-transferable), best-effort top-10 token-account concentration, heuristic risk score

POST https://solana-x402-microtools-mainnet.valecity.workers.dev/api/tx-preview

Solana transaction preview BEFORE signing: simulate an unsigned or signed legacy/v0 transaction (address lookup tables resolved) and get SOL and SPL/Token-2022 balance changes for your wallet, programs invoked (known/unknown), fee estimate and red flags (token approvals, authority/owner changes, clo

GET https://solana-x402-microtools-mainnet.valecity.workers.dev/api/pool-pulse

Solana new-pool momentum feed: newly created pools (Raydium, Meteora, PumpSwap) within 15m or 1h, ranked by 5m volume/liquidity velocity, buys/sells, net buy flow and activity score (0-100)

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://solana-x402-microtools-mainnet.valecity.workers.dev/api/crypto  # expect HTTP 402 Payment Required (price advertised in the 402 response)
/.well-known/x402.json
https://solana-x402-microtools-mainnet.valecity.workers.dev/.well-known/x402

Listed in

Directories this entry was found in.

x402scan since 2026-10-22