x402check
Actively maintained
- Is it safe? We have not read the data policy of x402check yet. Read it on the official site before you upload anything.x402check.dev ↗
- Is it free? We have not read the prices of x402check yet; they are next in our queue. Until then, the official site has them.x402check.dev ↗
- What else does this?
Synoptivfree
Midpointfree
PoisarSee ↓
not read yet
Use
- For
- AI agents and their operators checking x402 endpoints before paying them
- Activity
- Actively maintainedsite updated 2 days ago
- How it runs
- API
- Used for
- verify a seller's payment address before signing
- compare candidate x402 sellers by verdict and price
- detect payment address or price changes on an endpoint
- Has an MCP server (1 in the registry)public registry →
- Publishes llms.txt, a file written for AI assistantsx402check.dev ↗
- MCP serverdev.x402check/mcpverified in the MCP registry
- Stateanswers, 4 toolschecked 2026-10-31
- Address to connectx402check.dev/mcp
- OpenAPI spec10 pathsthe spec ↗
- MCP docsx402check.dev/mcp.jsonthe vendor's page ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
Synoptiv
Gathers price, fundamentals, news, insider and congressional trade data for US stocks and writes a bull/bear thesis with entry, stop and targets.
613Active - #2
MidpointMCP · open
Grades trading cards from two photos, measuring centering and surface defects, and tracks collection values against eBay sales.
1.2kActive - #3
PoisarMCP · open
Normalizes market headlines, scores them against the stocks and crypto they may move, and ranks opportunities with chart and risk checks.
5.3kActive - #4
Creditcards.bestMCP · open
Serves verified credit card data, rewards estimates and eligibility checks to AI assistants through an MCP connector.
876Active - #5
QuantralMCP · sign-in
Scores stocks 0-100 from social posts, congressional trades and insider buys, and grades the voices behind the calls.
343ActiveFrom $9.99/mo2026
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use x402check for?
Sign in to leave a noteWhat is x402check?
Checks an x402 payment endpoint's verdict, payment address, price changes and uptime history before an agent pays it. It is listed in the Atlas under Finance.
Who is x402check for?
AI agents and their operators checking x402 endpoints before paying them
Is x402check still maintained?
Actively maintained: site updated 2 days ago.
What are alternatives to x402check?
In Finance, by use: Synoptiv, Midpoint, Poisar, Creditcards.best, Quantral.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
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How we read every tool → · By INITE Atlas Desk
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