Verified AI Agent Upgrades — Agent Upgrade Network
https://a-upgradenet.com/x402/base-balancea-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.
Paid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
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. |
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.
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.
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.
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.
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.
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.
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.
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
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.
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
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
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
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.
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.
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.
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.
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.
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 -sS -i -X POST https://a-upgradenet.com/x402/base-balance # expect HTTP 402 Payment Required (about $0.001/call)
Listed in
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