Chain Check (x402)
REMOTE · CHAINCHECK-API.NETLIFY.APP
x402-paid on-chain tools: wallet report, contract scan, token risk, gas, address labels (USDC/Base)
Available components
Last scanned (1 hour ago)
Scores higher than 45% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Crypto and Web3
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 Security63
- 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 6 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
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability66
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 550 tokens (~91/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage91
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 73% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 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
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.
- 4 Nov 26 +1
- Stability: unverified → 0.03 ▲ functional
- 3 Nov 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 5 Nov 2026 · Probed https://chaincheck-api.netlify.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.netlify.app,O=Netlify\, Inc,L=San Francisco,ST=California,C=US | CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US | 16 Feb 2026 | 19 Mar 2027 | ECDSA 256 | SHA256-RSA | cd5d0afb0611b5bd9d692535c0ca7c4 |
| SANs: *.netlify.app, netlify.app | ||||||
| CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1,O=DigiCert Inc,C=US (CA) | CN=DigiCert Global Root G2,OU=www.digicert.com,O=DigiCert Inc,C=US | 30 Mar 2021 | 29 Mar 2031 | RSA 2048 | SHA256-RSA | cf5bd062b5602f47ab8502c23ccf066 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of chaincheck-api.netlify.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| netlify.app. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://chaincheck-api.netlify.app/mcp | Verified | 200 | |
| http (plaintext) | http://chaincheck-api.netlify.app/mcp | HTTPS enforced | 301 | https://chaincheck-api.netlify.app/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 →
address_label ~85
ENS <-> address resolution and malicious-address flags (phishing, scam, sanctions, mixer). Paid $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | yes | address or ENS name |
| x402_payment | string | – | Optional x402 v2 payment payload (value of PAYMENT-SIGNATURE header, base64). Omit to receive payment terms. |
No output schema declared.
No examples provided.
contract_scan ~111
Smart-contract risk scan: proxy/admin, owner, mint, blacklist, pause, fee-change, trading toggle flags. Paid $0.02 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| chain | string | yes | ethereum|base|arbitrum|optimism|polygon|bsc|avalanche |
| x402_payment | string | – | Optional x402 v2 payment payload (value of PAYMENT-SIGNATURE header, base64). Omit to receive payment terms. |
No output schema declared.
No examples provided.
gas_snapshot ~74
Live gas on 7 EVM chains with USD cost of transfer/swap and cheapest chain. Paid $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| x402_payment | string | – | Optional x402 v2 payment payload (value of PAYMENT-SIGNATURE header, base64). Omit to receive payment terms. |
No output schema declared.
No examples provided.
pricing ~28
Free. Lists Chain Check tools, prices and how to pay (x402, USDC on Base).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
token_risk ~119
ERC-20 token risk score 0-100 (honeypot, taxes, mint, hidden owner, blacklist, LP lock, top holders). Paid $0.02 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| chain | string | yes | ethereum|base|arbitrum|optimism|polygon|bsc|avalanche |
| x402_payment | string | – | Optional x402 v2 payment payload (value of PAYMENT-SIGNATURE header, base64). Omit to receive payment terms. |
No output schema declared.
No examples provided.
wallet_report ~93
Multi-chain EVM wallet report (7 chains): native/USDC/USDT balances, tx counts, contract + EIP-7702 detection. Paid $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| x402_payment | string | – | Optional x402 v2 payment payload (value of PAYMENT-SIGNATURE header, base64). Omit to receive payment terms. |
No output schema declared.
No examples provided.
How do I install the Chain Check (x402) MCP server?
Chain Check (x402) is a hosted endpoint at https://chaincheck-api.netlify.app/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 · chaincheck-api.netlify.app
claude mcp add --transport http app-netlify-chaincheck-api-chaincheck 'https://chaincheck-api.netlify.app/mcp'
What is the Chain Check (x402) MCP server?
Chain Check (x402) is an MCP server listed in the public MCP registry as app.netlify.chaincheck-api/chaincheck. x402-paid on-chain tools: wallet report, contract scan, token risk, gas, address labels (USDC/Base). This page covers its hosted endpoint (https://chaincheck-api.netlify.app/mcp).
Is the Chain Check (x402) MCP server safe to use?
Chain Check (x402) scores 65 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 Chain Check (x402) MCP server expose?
Chain Check (x402) exposes 6 tools: wallet_report, contract_scan, token_risk, gas_snapshot, address_label, pricing. Their descriptions and schemas cost roughly 510 tokens of context every time the server is loaded.
Does the Chain Check (x402) MCP server require authentication?
No. We connected to Chain Check (x402) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Chain Check (x402) MCP server still maintained?
Chain Check (x402) is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.