LucyESL MCP server

Which servers in the official MCP registry are LucyESL's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-20

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Whose server it is

Registry namecom.lucyesl/jobsverified in the MCP registry

The registry name sits under lucyesl.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-20

Stateanswerschecked 2026-10-20
Tools7
Server calls itselfLucyESL
Server version1.2.0
Protocol version2025-06-18

On 2026-10-20 the server answered initialize and tools/list without a sign-in. First answer in 154 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 1 of the 7 days it takes to judge reliability.

Once connected

Parameters are untyped or undescribed in 4 of 7 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-10-20

INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
Answeredmeasuring1 of the 7 daily checks it takes to print a share
Median first answer780 ms
Space in an agent's context≈ 846 tokensthe definitions of all its tools (7), which an agent carries on every turn
Tool definitionsA · 90 of 100

Parameters without a description: in 4 of 7

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers7 tools · read 2026-10-20

search
Search live English-teaching jobs in South Korea on LucyESL by free text. Returns ids, titles and URLs.
fetch
Fetch one LucyESL job listing by id as a plain-text document with its facts.
search_jobs
Filter the live LucyESL board of English-teaching jobs in South Korea: region, student age, housing, visa, schedule, contract, setting, direct hire, minimum salary, free text. Returns structured records; pay in KRW per month unless stated…
get_job
One live listing as a structured record.
salary_stats
English-teacher salary statistics for South Korea computed from the live listings: median, quartiles, by region, by employer type, effective pay per teaching hour, disclosure rates, housing. CC BY 4.0.
disclosure_stats
How many live Korean ESL job adverts state the salary, hours, severance, pension, insurance, airfare, vacation and split shifts. CC BY 4.0.
market_stats
Live English-teaching job adverts in South Korea counted by region: how many in each, direct hire against recruiters, how many state total on-site hours, and the median advertised salary where the sample allows. Counts of adverts, not of…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "jobs": {
      "type": "http",
      "url": "https://lucyesl.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http lucyesl https://lucyesl.com/mcp

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://lucyesl.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.