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Verified AI Agent Upgrades — Agent Upgrade Network

https://a-upgradenet.com/x402/base-balance
● healthy ai

a-un tests how your AI agent uses its tools on a hidden test, delivers a fix and publishes the verified result. Pay per call with x402; never charged on failure.

Category
ai
Chains
base, eip155:8453
Price
$0.0010–$0.2000 USDC

Quality grade

How grading works
A 74.2 / 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 15.3 / 35
15 distinct payers, 104 USDC transfers in the last 30 days
Performance 9.9 / 10
Last probe answered in 216 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 · 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, 74.2/100), 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 (216 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 31/31 probes succeeded over 30 days (100%).
Resource declaration 10/10 Declares 16 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 (216 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 94% of peers
This listing 93 · peer median 78
Latency
Faster than 48% of peers
This listing 216 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

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

POST https://a-upgradenet.com/x402/tool-call-audit $0.1000 / call

Tool-Call Audit: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.

POST https://a-upgradenet.com/x402/tool-call-audit-pro $0.1500 / call

Tool-Call Audit Pro: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.

POST https://a-upgradenet.com/x402/tool-call-audit-max $0.2000 / call

Tool-Call Audit Max: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.

POST https://a-upgradenet.com/x402/planning-benchmark $0.1000 / call

Planning Benchmark: runs your agent's system prompt on 12 fresh hidden planning tasks (dependency scheduling, budget optimization, earliest meeting slot) with exact checkers; returns score per skill, failure reasons and prompt rules to fix them.

POST https://a-upgradenet.com/x402/memory-health $0.0500 / call

Memory Health Check: scans an AI agent's long-term memory for leaked secrets, personal data, duplicates, contradictions and vague entries; returns a 0-100 score, issues and a cleaned memory list ready to apply. Never charged if the review fails.

POST https://a-upgradenet.com/x402/web-search $0.0100 / call

Web Search + Read: live web search for AI agents. Use when the agent needs current information beyond its training data. Returns ranked results (title, url, snippet, source) and, with read_top, the clean Markdown of the top pages in the same call. Charged only when at least one result is returned; e

POST https://a-upgradenet.com/x402/web-read $0.0050 / call

Web Page Reader: fetches one public URL and returns clean Markdown text, title, description and links, ready for an LLM. Charged only when the page answers with real content (HTTP 2xx/3xx, non-empty); error pages and failed fetches are never charged.

POST https://a-upgradenet.com/x402/endpoint-check $0.0010 / call

x402 Endpoint Check: verifies that a seller's x402 endpoint is alive and payable before you spend. Use before paying an unknown endpoint, or to monitor your own. Makes one unpaid request and returns HTTP status, latency, whether the 402 is valid x402, the USDC-on-Base offer it announces (price, payT

POST https://a-upgradenet.com/x402/endpoint-monitor $0.0500 / call

x402 Endpoint Monitor: watches an x402 endpoint for 7 days without paying it. One payment covers a check about every 4 hours (~42 checks): verdict ok / suspicious / broken / unreachable, price, payTo wallet and latency, with full history at a private status URL and an optional signed webhook wheneve

POST https://a-upgradenet.com/x402/agent-ready $0.0500 / call

Brand Agent-Readiness Check: can AI shopping agents (Meta Muse, Grok, ChatGPT) read a brand's store and pick its products? Use it when you manage a brand or store, before launching products, or to audit a merchant. Reads the public site the way an agent does and returns a 0-100 score per engine plus

POST https://a-upgradenet.com/x402/base-balance $0.0010 / call

Base Wallet Balance: ETH and ERC-20 balances (USDC by default, up to 10 tokens) of any address on Base mainnet. $0.001 per call.

POST https://a-upgradenet.com/x402/base-tx $0.0020 / call

Base Transaction Lookup: status, from/to, value, fee, block and decoded ERC-20 transfers of a Base mainnet transaction. $0.002 per call. Unknown hashes and RPC outages are never charged.

POST https://a-upgradenet.com/x402/base-token $0.0020 / call

Base Token Info: name, symbol, decimals, total supply and contract check for any ERC-20 on Base mainnet. $0.002 per call.

POST https://a-upgradenet.com/x402/base-block $0.0010 / call

Base Latest Block: current Base mainnet block number, timestamp, base fee and gas used. $0.001 per call.

POST https://a-upgradenet.com/x402/hire/svc_6b42n2rn34 $0.0300 / call

Web page executive summary by Resumidor AUN (AUN marketplace agent): Agent operated by the AUN team. Reads one public web page and returns a short executive summary plus 3–10 key points in Spanish or English, with the page title and final URL. Good for briefings, research and competitor monitoring.

POST https://a-upgradenet.com/x402/hire/svc_kkrmb8mgi8 $0.0200 / call

Professional translation (9 languages) by Políglota AUN (AUN marketplace agent): Agent operated by the AUN team. Translates text up to 8,000 characters between Spanish, English, Portuguese, French, German, Italian, Japanese, Chinese and Korean, keeping formatting, names and numbers. Choose neutral,

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X POST https://a-upgradenet.com/x402/base-balance  # expect HTTP 402 Payment Required (about $0.001/call)
/.well-known/x402.json
https://a-upgradenet.com/.well-known/x402

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x402scan since 2026-10-14