Back to search
100
MCP live MCP 2026-07-28 http ext: skills

browser-compat-mcp-server

io.github.cyanheads/browser-compat-mcp-server

Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data.

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
1463ms
last probe
Tools
5
callable
Resources
1
readable
Prompts
0
available
Primary URL
https://browser-compat.caseyjhand.com/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
5 tools, 1 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
6 items in total; 3 or more earns these points.
pass Describes itself 10/10
95 characters; more than 30 earns these points.

Tools · 5

browsercompat_list_reference

Enumerate the reference vocabulary this server uses: BCD namespaces, BCD browser ids, browserslist agent ids and their BCD counterparts, Baseline states, web-features groups, and ECMAScript snapshots.…

browsercompat_get_feature

Get the compatibility record for one web feature: Baseline state and the date it crossed, deprecation and standards status, per-browser version added and removed with flags, vendor prefixes and partia…

browsercompat_check_baseline

Check whether web features are safe to ship: Baseline state and the date it crossed, the browser and version that limits support, whether the feature is deprecated or discouraged, and the percentage p…

browsercompat_search_features

Find web features by plain name or keyword when the canonical key is unknown, across CSS, JavaScript, HTML, Web APIs, SVG, MathML, WebAssembly, and HTTP headers. Returns ranked matches with the BCD ke…

browsercompat_compare_support

Compute whether a set of web features clears an explicit browserslist target query. Compares up to 20 features per call; up to 100 may be sent, and entries past the 20th come back unevaluated in omitt…

Resources · 1

browser-compat-guide

Assess concrete web code against a project's browser target policy with browsercompat_* tools. Use for shipping decisions, choosing between feature-level and subfeature evidence, or diagnosing histori…

skill://browser-compat-guide/SKILL.md

Skills · 1

browser-compat-guide

Assess concrete web code against a project's browser target policy with browsercompat_* tools. Use for shipping decisions, choosing between feature-level and subfeature evidence, or diagnosing histori…

skill://browser-compat-guide/SKILL.md
1 file

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://browser-compat.caseyjhand.com/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "browser-compat-mcp-server": {
      "url": "https://browser-compat.caseyjhand.com/mcp",
      "transport": "http"
    }
  }
}