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AgentResolver — Agent Commerce Health Monitoring

https://agentresolver.vercel.app/api/provider-launch-check
● healthy model-context-protocol-mcp

Free API/MCP/x402 health checks plus $19 hourly managed monitoring for agent services.

Category
model-context-protocol-mcp
Chains
base, solana
Price
$0.0010–$19.0000 USDC

Quality grade

How grading works
B+ 68.1 / 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 13.0 / 35
11 distinct payers, 37 USDC transfers in the last 30 days
Performance 7.1 / 10
Last probe answered in 721 ms (full marks at 200 ms or less)
Readiness 13.0 / 15
Agent readiness 87/100
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

B · 87/100

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+, 68.1/100), 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 (721 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 32/32 probes succeeded over 30 days (100%).
Resource declaration 10/10 Declares 14 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 (721 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 75% of peers
This listing 87 · peer median 78
Latency
Faster than 10% of peers
This listing 721 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 (721 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.

How many agent tools actually work · All statistics

Paid endpoints

14 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://agentresolver.vercel.app/api/provider-launch-check $0.0500 / call

GET-first $0.05 USDC seller-side launch verification for machine-service providers. A no-parameter GET validates AgentResolver's known-good reference provider; optional provider fields can be supplied as query parameters. Production sellers should use POST for their complete onboarding packet. Passi

GET https://agentresolver.vercel.app/api/verified-resolve $0.0200 / call

Paid $0.02 GET-first capability procurement plus bounded live verification. Supply goal and optional simple constraints in query parameters; POST remains available for schema-heavy constraints and multiple provider origins.

GET https://agentresolver.vercel.app/api/x402-settlement-verify $0.0010 / call

x402 settlement verify and payment receipt verification for $0.001. Supply a Base transaction hash and optional expected recipient/amount as query parameters; after AgentResolver payment settles, the response independently checks the public Base receipt, EIP-3009 transaction shape, USDC Transfer log

GET https://agentresolver.vercel.app/api/x402-ping $0.0010 / call

No-body $0.001 x402 settlement test for funded agents. Verifies wallet, facilitator, USDC payment, and paid delivery end-to-end; returns a timestamped pong plus machine-readable next paid actions only after successful settlement.

POST https://agentresolver.vercel.app/api/usdc-payment-check $0.0010 / call

Paid $0.001 USDC x402 endpoint-safety and payment-contract check. Exact-intent alias of AgentResolver's canonical fail-closed x402 payment preflight; execution logic is shared with /api/x402-payment-preflight.

POST https://agentresolver.vercel.app/api/x402-preflight $0.0010 / call

Paid $0.001 USDC x402 preflight for autonomous buyers. Exact-intent alias of AgentResolver's canonical fail-closed payment preflight; checks endpoint reachability and observed x402 payment terms before caller authorization.

POST https://agentresolver.vercel.app/api/prepayment-authorization-gate $0.0010 / call

Paid $0.001 USDC prepayment authorization gate for autonomous x402 buyers. Returns the same fail-closed eligible/blocked decision and observed payment terms as AgentResolver's canonical payment preflight before the caller authorizes spend.

POST https://agentresolver.vercel.app/api/api-trust-security-preflight $0.0010 / call

Paid $0.001 USDC API trust/security preflight focused on x402 payment safety. Checks public endpoint reachability plus observed payment recipient, price, network, asset, scheme and resource binding before caller authorization.

POST https://agentresolver.vercel.app/api/x402-transaction-path-payment-gate $0.0010 / call

Paid $0.001 USDC x402 transaction-path payment gate for autonomous buyers. Uses AgentResolver's canonical fail-closed preflight engine to check endpoint reachability and observed recipient, amount, network, asset, scheme and resource binding before caller authorization.

POST https://agentresolver.vercel.app/api/x402-payment-preflight $0.0010 / call

Verify a public x402 endpoint before paying it. AgentResolver performs one bounded HTTPS preflight and returns a fail-closed router decision plus the exact observed target payment terms: payTo recipient, USDC amount, network, asset, resource binding, x402 version and scheme, together with machine-re

POST https://agentresolver.vercel.app/api/batch-verified-resolve $0.0500 / call

Resolve and live-verify up to four missing capability decisions in one bounded call, using unpaid MCP and x402/HTTP evidence.

POST https://agentresolver.vercel.app/api/agent-distribution-pack $5.0000 / call

Seller-side agent distribution pack for API agent distribution, API discoverability for AI agents, MCP discoverability, MCP distribution, and agent-service launch. Audits live machine-readable discovery surfaces, diagnoses missing launch signals, and returns ready-to-commit discovery artifacts plus

POST https://agentresolver.vercel.app/api/managed-monitor-30d $19.0000 / call

Thirty days of recurring managed monitoring for one public API, MCP server, or x402 service, targeting an hourly cadence without guaranteeing exact run times. Tracks machine-readiness, optional live MCP compatibility/tool-contract drift, and optional GET-safe x402 payment-contract drift with a durab

GET https://agentresolver.vercel.app/api/payment-guard $0.0010 / call

AgentResolver Guard alias for the canonical Payment Preflight. Verify a live x402 payment contract before the caller authorizes spend; returns fail-closed eligible/blocked evidence and observed payment terms. The caller alone authorizes any target payment.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://agentresolver.vercel.app/api/provider-launch-check  # expect HTTP 402 Payment Required (about 0.001 USDC/call)
MCP endpoint
https://agentresolver.vercel.app/mcp
/.well-known/x402.json
https://agentresolver.vercel.app/.well-known/x402

Listed in

Directories this entry was found in.

mcp since 2026-09-16 x402scan since 2026-09-16 a2a since 2026-09-26 x402 since 2026-10-08