MetaMask Embedded Wallets (Web3Auth) MCP
REMOTE · MCP.WEB3AUTH.IO · SCANNED SEP 20
Helps AI coding agents integrate MetaMask Embedded Wallets (Web3Auth) SDKs.
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 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 5 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 Usability77
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 489 tokens (~97/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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 MetaMask Embedded Wallets (Web3Auth) MCP server?
MetaMask Embedded Wallets (Web3Auth) MCP is a hosted endpoint at https://mcp.web3auth.io/, 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 · mcp.web3auth.io
claude mcp add --transport http web3auth-mcp-server 'https://mcp.web3auth.io/'
{
"mcpServers": {
"web3auth-mcp-server": {
"url": "https://mcp.web3auth.io/"
}
}
} {
"servers": {
"web3auth-mcp-server": {
"type": "http",
"url": "https://mcp.web3auth.io/"
}
}
} [mcp_servers.web3auth-mcp-server] url = "https://mcp.web3auth.io/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"web3auth-mcp-server": {
"type": "remote",
"url": "https://mcp.web3auth.io/",
"enabled": true
}
}
} openclaw mcp add web3auth-mcp-server --url 'https://mcp.web3auth.io/' --transport streamable-http
mcp_servers:
web3auth-mcp-server:
url: "https://mcp.web3auth.io/" {
"McpServers": {
"web3auth-mcp-server": {
"Transport": "http",
"Url": "https://mcp.web3auth.io/"
}
}
} assistant mcp add web3auth-mcp-server -t streamable-http -u 'https://mcp.web3auth.io/'
{
"mcpServers": {
"web3auth-mcp-server": {
"type": "http",
"url": "https://mcp.web3auth.io/"
}
}
} 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.
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +1
- Stability: 0.97 → pass security
- 23 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Jul 26 0
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 20 Sept 2026 · Probed https://mcp.web3auth.io
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.web3auth.io | CN=YR1,O=Let's Encrypt,C=US | 3 Sept 2026 | 2 Dec 2026 | RSA 2048 | SHA256-RSA | 600e3a6372314cc18fd166fa0563e0a5286 |
| SANs: mcp.web3auth.io | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.web3auth.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| web3auth.io. | 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=63072000 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.web3auth.io | Verified | 200 | |
| http (plaintext) | http://mcp.web3auth.io | HTTPS enforced | 308 | https://mcp.web3auth.io/ |
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 →
get_doc ~67
Fetch the full content of a MetaMask Embedded Wallets documentation page by URL. Sources: Algolia, llms.txt, GitHub MDX.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | A docs.metamask.io URL, e.g. https://docs.metamask.io/embedded-wallets/sdk/react/ |
No output schema declared.
No examples provided.
get_example ~105
Fetch complete source code of a Web3Auth integration example from GitHub.
| Name | Type | Req | Description |
|---|---|---|---|
| auth_method | string | – | Filter by auth method, e.g. 'auth0', 'firebase', 'google', 'grouped' |
| category | string | – | Filter by category |
| chain | string | – | Filter by blockchain family |
| name | string | – | Example name, e.g. 'React Quick Start' or 'Android Firebase' |
| platform | string | – | Filter by platform |
No output schema declared.
No examples provided.
get_sdk_reference ~148
Fetch SDK source code (types, interfaces, hooks) from open-source Web3Auth repos.
| Name | Type | Req | Description |
|---|---|---|---|
| focus | string | – | What kind of source to focus on. 'types' = interfaces/types (default, most useful). 'hooks' = React hooks / Vue composables. 'errors' = error types. 'main-class' = SDK implementation. 'all' = everyth… |
| module | string | – | Specific SDK module to fetch, e.g. 'core-types', 'react-hooks', 'modal-types', 'main-class'. Omit to get default type definitions. Call without module first to see available modules. |
| platform | string | yes | Target platform SDK to fetch source for |
No output schema declared.
No examples provided.
search_community ~72
Search or fetch posts from the MetaMask Embedded Wallets community forum (builder.metamask.io).
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | – | Search query, e.g. 'popup blocked safari', 'JWT error', 'Android unstable connection' |
| topic_id | integer | – | Discourse topic ID to fetch the full discussion thread |
No output schema declared.
No examples provided.
search_docs ~97
Search MetaMask Embedded Wallets documentation (Algolia) and example projects. Returns doc page links with snippets and matching examples.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Filter examples by category |
| chain | string | – | Filter examples by blockchain family |
| platform | string | – | Filter examples by platform |
| query | string | yes | What you are looking for -- e.g. 'React custom auth', 'Android deep linking', 'JWT grouped connections' |
No output schema declared.
No examples provided.
What is the MetaMask Embedded Wallets (Web3Auth) MCP server?
MetaMask Embedded Wallets (Web3Auth) MCP is listed in the public MCP registry as io.github.Web3Auth/mcp-server. Helps AI coding agents integrate MetaMask Embedded Wallets (Web3Auth) SDKs. This page covers its hosted endpoint (https://mcp.web3auth.io).
Is the MetaMask Embedded Wallets (Web3Auth) MCP server safe to use?
MetaMask Embedded Wallets (Web3Auth) MCP scores 81 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 MetaMask Embedded Wallets (Web3Auth) MCP server expose?
MetaMask Embedded Wallets (Web3Auth) MCP exposes 5 tools: search_docs, get_doc, get_example, get_sdk_reference, search_community. Their descriptions and schemas cost roughly 489 tokens of context every time the server is loaded.
Does the MetaMask Embedded Wallets (Web3Auth) MCP server require authentication?
No. We connected to MetaMask Embedded Wallets (Web3Auth) MCP without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the MetaMask Embedded Wallets (Web3Auth) MCP server still maintained?
MetaMask Embedded Wallets (Web3Auth) MCP is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.