x402 Tools
REMOTE · FITZE-X402-SELLER.APP.WORKBUDDY.HOST · SCANNED SEP 25
Pay-per-call research tools for AI agents, paid via x402 USDC. Remote MCP, one free tool.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 7 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability75
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 573 tokens (~81/item across 7 items; 7 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management10
- Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the x402 Tools MCP server?
x402 Tools is a hosted endpoint at https://fitze-x402-seller.app.workbuddy.host/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · fitze-x402-seller.app.workbuddy.host
claude mcp add --transport http foxxx009-x402-tools-mcp 'https://fitze-x402-seller.app.workbuddy.host/mcp'
{
"mcpServers": {
"foxxx009-x402-tools-mcp": {
"url": "https://fitze-x402-seller.app.workbuddy.host/mcp"
}
}
} {
"servers": {
"foxxx009-x402-tools-mcp": {
"type": "http",
"url": "https://fitze-x402-seller.app.workbuddy.host/mcp"
}
}
} [mcp_servers.foxxx009-x402-tools-mcp] url = "https://fitze-x402-seller.app.workbuddy.host/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"foxxx009-x402-tools-mcp": {
"type": "remote",
"url": "https://fitze-x402-seller.app.workbuddy.host/mcp",
"enabled": true
}
}
} openclaw mcp add foxxx009-x402-tools-mcp --url 'https://fitze-x402-seller.app.workbuddy.host/mcp' --transport streamable-http
mcp_servers:
foxxx009-x402-tools-mcp:
url: "https://fitze-x402-seller.app.workbuddy.host/mcp" {
"McpServers": {
"foxxx009-x402-tools-mcp": {
"Transport": "http",
"Url": "https://fitze-x402-seller.app.workbuddy.host/mcp"
}
}
} assistant mcp add foxxx009-x402-tools-mcp -t streamable-http -u 'https://fitze-x402-seller.app.workbuddy.host/mcp'
{
"mcpServers": {
"foxxx009-x402-tools-mcp": {
"type": "http",
"url": "https://fitze-x402-seller.app.workbuddy.host/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 23 Sept 26 +1
- Stability: unverified → 0.03 ▲ functional
- 22 Sept 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Probed https://fitze-x402-seller.app.workbuddy.host/mcp
TLS valid
Negotiated TLS 1.2 with TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.workbuddy.host,O=Tencent Technology (Shenzhen) Company Limited,L=Shenzhen,ST=Guangdong Province,C=CN | CN=DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1,O=DigiCert\, Inc.,C=US | 10 Sept 2026 | 27 Mar 2027 | RSA 2048 | SHA256-RSA | 42d0278b23e5092a1c8540bc7c33f21 |
| SANs: *.workbuddy.host, workbuddy.host, *.app-staging.workbuddy.host, *.app-tencent.workbuddy.host, *.app.workbuddy.host, *.apps-staging.workbuddy.host, *.apps.workbuddy.host | ||||||
| CN=DigiCert Secure Site OV G2 TLS CN RSA4096 SHA256 2022 CA1,O=DigiCert\, Inc.,C=US (CA) | CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=US | 15 Dec 2022 | 14 Dec 2032 | RSA 4096 | SHA256-RSA | 4c1b960191fcabedcda9301a6cd78c3 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of fitze-x402-seller.app.workbuddy.host. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| host. | present | 29155 | 13 | Verified |
| workbuddy.host. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://fitze-x402-seller.app.workbuddy.host/mcp | Verified | 200 | |
| http (plaintext) | http://fitze-x402-seller.app.workbuddy.host/mcp | HTTPS enforced | 302 | HTTPS://fitze-x402-seller.app.workbuddy.host/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
domain_intel ~80
$0.02 per call — Domain due-diligence bundle: RDAP registrar + creation/expiry dates + status, DNS records (A/MX/NS/TXT), and Certificate Transparency history via crt.sh. Use to vet a domain before trusting or linking to it.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
free_url_check ~67
FREE — FREE: check whether a public URL is reachable and what it is. Returns HTTP status, final URL after redirects, content type and page title. Use web_fetch (paid) for full text and links.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
github_repo ~74
$0.02 per call — GitHub repo snapshot: stars, forks, open-issue count, watchers, primary language, SPDX license, created/pushed dates and latest release tag. Use to triage a repo before contributing or depending on it.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
repo_diligence ~89
$2.5 per call — Deep GitHub repo due-diligence: base snapshot + last 5 commits (author/date/message), contributor count, archived flag, security-policy presence, latest release cadence and open/closed issue ratio. Use to decide whether to depend on or contribute to a repo before trusting it.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
token_intel ~67
$0.02 per call — Base ERC-20 due-diligence: on-chain name, symbol, decimals and total supply via eth_call. Use to sanity-check a Base token address before interacting with it.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
web_brief ~83
$3 per call — Multi-source research brief from 1–3 URLs. For each source extract title, meta description, key sentences (numbered/quoted/date-or-figure-bearing) and outbound links. Returns a structured, citable brief other agents can consume without their own web access.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
web_fetch ~71
$0.01 per call — Fetch a public URL and return status, final URL, title, cleaned text (scripts/styles stripped, truncated) and the top 20 absolute links. Useful when an agent itself cannot reach the open web.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | – | JSON or key=value input for the tool |
No output schema declared.
No examples provided.
What is the x402 Tools MCP server?
x402 Tools is an MCP server listed in the public MCP registry as io.github.foxxx009/x402-tools-mcp. Pay-per-call research tools for AI agents, paid via x402 USDC. Remote MCP, one free tool. This page covers its hosted endpoint (https://fitze-x402-seller.app.workbuddy.host/mcp).
Is the x402 Tools MCP server safe to use?
x402 Tools scores 66 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the x402 Tools MCP server expose?
x402 Tools exposes 7 tools: web_fetch, domain_intel, github_repo, token_intel, repo_diligence, and 2 more. Their descriptions and schemas cost roughly 531 tokens of context every time the server is loaded.
Does the x402 Tools MCP server require authentication?
No. We connected to x402 Tools without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the x402 Tools MCP server still maintained?
x402 Tools is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.