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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "wasm-mcp": {
      "type": "http",
      "url": "https://mcp.xyzzylabs.ai/wasm/mcp"
    }
  }
}

claude mcp add --transport http wasm-mcp https://mcp.xyzzylabs.ai/wasm/mcp

[mcp_servers.wasm-mcp]
url = "https://mcp.xyzzylabs.ai/wasm/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "wasm-mcp": {
      "type": "remote",
      "url": "https://mcp.xyzzylabs.ai/wasm/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "wasm-mcp": {
      "type": "http",
      "url": "https://mcp.xyzzylabs.ai/wasm/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=wasm-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLnh5enp5bGFicy5haS93YXNtL21jcCJ9"
}

{
  "servers": {
    "wasm-mcp": {
      "type": "http",
      "url": "https://mcp.xyzzylabs.ai/wasm/mcp"
    }
  }
}

{
  "mcpServers": {
    "wasm-mcp": {
      "httpUrl": "https://mcp.xyzzylabs.ai/wasm/mcp"
    }
  }
}

extensions:
  "wasm-mcp":
    enabled: true
    name: "wasm-mcp"
    type: streamable_http
    uri: "https://mcp.xyzzylabs.ai/wasm/mcp"
    timeout: 300

Quality 82 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2024-11-05; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations9 of 9 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: instruction_list (destructiveHint, idempotentHint, openWorldHint); instruction_search (destructiveHint, idempotentHint, openWorldHint); type_get (destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 1,201 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 98 resolved packages
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable[email protected] resolved: 98 packages

9 tools, about 1,201 tokens to load them all · tool set 26157b6b837f · checked 2026-10-20 12:45 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 90 / 100

provenance90

liveness99

freshness65

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-97% ~updated-101d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] npm97 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.xyzzylabs.ai/wasm/mcp` streamable-http	none	yes	97%	290 ms	2024-11-05	2026-10-20

package	registry	version	runtime	secrets
`wasm-mcp`	npm	0.2.16	–

Tools (9)

`instruction_get`read-only	Fetch one WebAssembly instruction by mnemonic (`i32.add`) or binary opcode (`0x6a`, multi-byte `0xfd 0x89 0x02`): opcode bytes, category, introducing version, stack type signature, validation/execution anchors + URLs, and `traps` (runtime trap conditions with canonical names; empty + `can_trap:false` when it never traps).
`instruction_list`read-only	Enumerate WebAssembly instructions, filterable by `category`, `introduced_in` (1.0\|2.0\|3.0), mnemonic `prefix`, and `can_trap` (only trapping / only non-trapping). Rows (incl. `can_trap`) sorted by opcode.
`instruction_search`read-only	Ranked free-text search across instruction mnemonics, categories, and opcode hex. Returns hits with a `matched_on` field.
`proposal_list`read-only	List WebAssembly proposals + phases. Filter by `status` (phase-0…phase-5, finished, inactive), `phase` (0–5), `champion`, `affects` (core\|js-api\|web-api), or `contains`.
`section_get`read-only	Fetch one spec clause by id or anchor across `core` / `js-api` / `web-api` (`syntax-numtype`, `valid-unreachable`, `modules`, `streaming-modules`, …): title, prose, cross-references, SpecTec formal refs, and rendered URL.
`section_list`read-only	Navigate the clause tree of a spec (`core` / `js-api` / `web-api`), filterable by source `path` (`syntax`, `valid`, `exec`, `binary`, `text`, `appendix`), `anchor_prefix`, `titled_only`, and `max_level`.
`spec_search`read-only	Full-text search across clause anchors, titles, and prose of a spec (`core` / `js-api` / `web-api`). Ranked anchor-exact > title > anchor > prose, with snippets for body matches.
`spec_version`read-only	Return this server's package version plus the pinned upstream commit SHA(s) the bundled data was indexed from.
`type_get`read-only	Look up a value type (`i32`, `funcref`, `v128`, …) or type form (`functype`, `limits`, `memtype`, …): classification, sibling members, defining clause prose, formal refs, and URL.

Schemas: list_tools.

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More from io.github.xyzzylabs

Official server.json

{
  "name": "io.github.xyzzylabs/wasm-mcp",
  "title": "wasm-mcp",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.xyzzylabs.ai/wasm/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.2.16",
  "packages": [
    {
      "version": "0.2.16",
      "transport": {
        "type": "stdio"
      },
      "identifier": "wasm-mcp",
      "registryType": "npm"
    }
  ],
  "repository": {
    "url": "https://github.com/xyzzylabs/wasm-mcp",
    "source": "github"
  },
  "websiteUrl": "https://mcp.xyzzylabs.ai/wasm/",
  "description": "Read-only MCP server for the WebAssembly spec: instructions, types, sections, search, proposals."
}