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Username Inspector

R0· no sign-in

Look up username availability on 12 resale platforms (links where blocked); compare seller fees.

v1.1.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality75good
Trust96of 100
Uptime, 30 days100%
Latency p50279 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "username-inspector": {
      "type": "http",
      "url": "https://usernameinspector.com/api/mcp"
    }
  }
}
claude mcp add --transport http username-inspector https://usernameinspector.com/api/mcp
[mcp_servers.username-inspector]
url = "https://usernameinspector.com/api/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "username-inspector": {
      "type": "remote",
      "url": "https://usernameinspector.com/api/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "username-inspector": {
      "type": "http",
      "url": "https://usernameinspector.com/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=username-inspector&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdXNlcm5hbWVpbnNwZWN0b3IuY29tL2FwaS9tY3AifQ%3D%3D"
}
{
  "servers": {
    "username-inspector": {
      "type": "http",
      "url": "https://usernameinspector.com/api/mcp"
    }
  }
}
{
  "mcpServers": {
    "username-inspector": {
      "httpUrl": "https://usernameinspector.com/api/mcp"
    }
  }
}
extensions:
  "username-inspector":
    enabled: true
    name: "username-inspector"
    type: streamable_http
    uri: "https://usernameinspector.com/api/mcp"
    timeout: 300

Quality 75 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 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 hygiene100 · 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.annotations2 of 2 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 406 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability25 · weight 15
  • warn
    stability.changes6 tool changes in 30 days
  • fail
    stability.rug_pull2 tools kept their name but changed most of their description in 30 days; review before trusting them
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

2 tools, about 406 tokens to load them all · tool set e88e3de26b39 · tools last changed 2026-10-14 · checked 2026-10-20 17:02 UTC

Tool changes

  • compare_feeschangeddescription
    before

    Compare what a US sale keeps after fees on 7 platforms, best first. Costs add profit and ROI. Example: price 45, item_cost 12.

    after · 69% of words in common

    Compare what a US sale keeps after fees on 7 platforms. Example: price=45, item_cost=12 ranks platforms by profit.

  • check_usernamechangeddescription
    before

    Check if ONE username is free on 12 reselling platforms. Status: available, taken, unverified (open check_url), or error. Example: username "vintage_finds".

    after · 64% of words in common

    Check if ONE username is free on 12 resale platforms. Example: username='vintage_finds' returns available, taken, or unverified per platform.

  • compare_feeschangeddescription, input schema, output schemameaning changed
    before

    Compare what a sale pays out after marketplace fees on eBay, Poshmark, Mercari, Depop, Etsy, Grailed, and Vinted (US sellers). Takes the sale price in USD and, optionally, the shipping charged to the buyer, the item cost, the seller's own shipping cost, and an eBay promoted listing rate; with costs it also returns profit, margin, and ROI. Results are sorted best first. Sales tax is not included. Rates are approximate and carry the date each was last verified.

    after · 24% of words in common

    Compare what a US sale keeps after fees on 7 platforms, best first. Costs add profit and ROI. Example: price 45, item_cost 12.

  • check_usernamechangeddescription, input schema, output schemameaning changed
    before

    Check whether ONE username or store name is available on reselling platforms: eBay, eBay Store, Poshmark, Grailed, Vinted, Whatnot, Bonanza, and Chairish are looked up directly, but several of them (often eBay, Grailed, Whatnot, and Chairish) block automated lookups and then come back as unverified with a link; Poshmark, Vinted, and Bonanza most reliably return a live answer. Depop, Etsy, Mercari, and Ruby Lane cannot be checked automatically, so a link to the profile page is returned instead. Each platform status is "available" (no profile found), "taken" (a profile exists), "unverified" (open check_url to verify), or "error" (timed out or blocked). Usernames are 3 to 50 characters: letters, numbers, hyphens, and underscores. Each call checks one name. Results are cached for 5 minutes and repeated calls are rate-limited.

    after · 15% of words in common

    Check if ONE username is free on 12 reselling platforms. Status: available, taken, unverified (open check_url), or error. Example: username "vintage_finds".

  • compare_feeschangeddescription, output schema
    before

    Compare what a sale pays out after marketplace fees on eBay, Poshmark, Mercari, Depop, Etsy, Grailed, and Vinted (US sellers). Give the sale price in USD. Optionally add shipping charged to the buyer, your item cost, your own shipping cost, and an eBay promoted listing rate to also get profit, margin, and ROI. Results are sorted best first. Sales tax is not included. Rates are approximate and carry the date each was last verified.

    after · 84% of words in common

    Compare what a sale pays out after marketplace fees on eBay, Poshmark, Mercari, Depop, Etsy, Grailed, and Vinted (US sellers). Takes the sale price in USD and, optionally, the shipping charged to the buyer, the item cost, the seller's own shipping cost, and an eBay promoted listing rate; with costs it also returns profit, margin, and ROI. Results are sorted best first. Sales tax is not included. Rates are approximate and carry the date each was last verified.

  • check_usernamechangeddescription, output schema
    before

    Check whether ONE username or store name is available on reselling platforms: eBay, eBay Store, Poshmark, Grailed, Vinted, Whatnot, Bonanza, and Chairish are looked up directly, but several of them (often eBay, Grailed, Whatnot, and Chairish) block automated lookups and then come back as unverified with a link; Poshmark, Vinted, and Bonanza most reliably return a live answer. Depop, Etsy, Mercari, and Ruby Lane cannot be checked automatically, so a link to the profile page is returned instead. Each platform status is "available" (no profile found), "taken" (a profile exists), "unverified" (open check_url to verify), or "error" (timed out or blocked). Usernames are 3 to 50 characters: letters, numbers, hyphens, and underscores. Check one name per call and do not repeat the same lookup: results are cached for 5 minutes and repeated calls are rate-limited.

    after · 93% of words in common

    Check whether ONE username or store name is available on reselling platforms: eBay, eBay Store, Poshmark, Grailed, Vinted, Whatnot, Bonanza, and Chairish are looked up directly, but several of them (often eBay, Grailed, Whatnot, and Chairish) block automated lookups and then come back as unverified with a link; Poshmark, Vinted, and Bonanza most reliably return a live answer. Depop, Etsy, Mercari, and Ruby Lane cannot be checked automatically, so a link to the profile page is returned instead. Each platform status is "available" (no profile found), "taken" (a profile exists), "unverified" (open check_url to verify), or "error" (timed out or blocked). Usernames are 3 to 50 characters: letters, numbers, hyphens, and underscores. Each call checks one name. Results are cached for 5 minutes and repeated calls are rate-limited.

Full history: list_changes · trend: quality JSON.

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 96 / 100

provenance85
liveness100
freshness100
hygiene100

+repository +dns-namespace +website +reachable +uptime-100% +updated-10d-ago

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

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://usernameinspector.com/api/mcp streamable-httpnoneyes100%279 ms2025-11-252026-10-20

Tools (2)

check_usernameread-onlyCheck if ONE username is free on 12 resale platforms. Example: username='vintage_finds' returns available, taken, or unverified per platform.
compare_feesread-onlyCompare what a US sale keeps after fees on 7 platforms. Example: price=45, item_cost=12 ranks platforms by profit.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.usernameinspector/username-inspector",
  "title": "Username Inspector",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://usernameinspector.com/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.1.0",
  "repository": {
    "url": "https://github.com/hickworks/username-inspector-mcp",
    "source": "github"
  },
  "websiteUrl": "https://usernameinspector.com/mcp/",
  "description": "Look up username availability on 12 resale platforms (links where blocked); compare seller fees."
}