LucyESL — English teaching jobs in Korea
REMOTE · LUCYESL.COM · SCANNED SEP 25
English-teaching jobs in South Korea: salary, disclosure and by-region stats. Read-only, no key.
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 Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- 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 Usability71
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 650 tokens (~92/item across 7 items; 7 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage80
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 39% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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 LucyESL — English teaching jobs in Korea MCP server?
LucyESL — English teaching jobs in Korea is a hosted endpoint at https://lucyesl.com/mcp, 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 · lucyesl.com
claude mcp add --transport http com-lucyesl-jobs 'https://lucyesl.com/mcp'
{
"mcpServers": {
"com-lucyesl-jobs": {
"url": "https://lucyesl.com/mcp"
}
}
} {
"servers": {
"com-lucyesl-jobs": {
"type": "http",
"url": "https://lucyesl.com/mcp"
}
}
} [mcp_servers.com-lucyesl-jobs] url = "https://lucyesl.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-lucyesl-jobs": {
"type": "remote",
"url": "https://lucyesl.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-lucyesl-jobs --url 'https://lucyesl.com/mcp' --transport streamable-http
mcp_servers:
com-lucyesl-jobs:
url: "https://lucyesl.com/mcp" {
"McpServers": {
"com-lucyesl-jobs": {
"Transport": "http",
"Url": "https://lucyesl.com/mcp"
}
}
} assistant mcp add com-lucyesl-jobs -t streamable-http -u 'https://lucyesl.com/mcp'
{
"mcpServers": {
"com-lucyesl-jobs": {
"type": "http",
"url": "https://lucyesl.com/mcp"
}
}
} 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.
- 25 Sept 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
- 24 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: 573 → 650 ▼ functional
- Server version: 1.1.0 → 1.2.0 functional
- New tool “market_stats” functional
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 16 Sept 26 72
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 25 Sept 2026 · Probed https://lucyesl.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=lucyesl.com | CN=YE2,O=Let's Encrypt,C=US | 25 Jul 2026 | 23 Oct 2026 | ECDSA 384 | ECDSA-SHA384 | 6bfbea06e3eef51f2bfa4209505688c5cb7 |
| SANs: lucyesl.com, www.lucyesl.com | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of lucyesl.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| lucyesl.com. | 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=31536000; includeSubDomains; preload |
| content-security-policy | default-src 'self'; script-src 'self' 'nonce-94RMw9KbiGhxrDMATj55rg=='; style-src 'self' 'unsafe-inline'; img-src 'self' data:; font-src 'self'; connect-src 'self'; frame-src https://www.youtube-nocookie.com https://player.vimeo.com https://www.loom.com https://drive.google.com; object-src 'none'; base-uri 'none'; form-action 'self'; frame-ancestors 'self' |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), microphone=(), camera=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://lucyesl.com/mcp | Verified | 200 | |
| http (plaintext) | http://lucyesl.com/mcp | HTTPS enforced | 301 | https://lucyesl.com/mcp |
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 →
disclosure_stats Disclosure rates ~42
How many live Korean ESL job adverts state the salary, hours, severance, pension, insurance, airfare, vacation and split shifts. CC BY 4.0.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
fetch Fetch one listing ~32
Fetch one LucyESL job listing by id as a plain-text document with its facts.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
No output schema declared.
No examples provided.
get_job One listing as a record ~23
One live listing as a structured record.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | – |
No output schema declared.
No examples provided.
market_stats The job market by region ~64
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 employers. CC BY 4.0.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
salary_stats Salary statistics ~52
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
search Search LucyESL jobs ~46
Search live English-teaching jobs in South Korea on LucyESL by free text. Returns ids, titles and URLs; use fetch for a listing's details.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | – |
No output schema declared.
No examples provided.
search_jobs Filter the live board ~259
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 otherwise; null means the advert did not say.
| Name | Type | Req | Description |
|---|---|---|---|
| age | string | – | Student age group; adults_only means adults and nobody younger |
| contract | string | – | – |
| delivery | string | – | – |
| direct_only | boolean | – | Only employers hiring directly (no recruiters or agencies) |
| format | string | – | Class shape |
| housing | string | – | – |
| limit | integer | – | – |
| min_salary | integer | – | Minimum monthly pay in KRW; snaps down to the board's steps 2000000, 2300000, 2600000, 3000000 |
| page | integer | – | – |
| q | string | – | Words to match in the title, city or employer name |
| region | string | – | Region key |
| schedule | string | – | – |
| setting | string | – | – |
| specialty | string | – | – |
| visa | string | – | e2 = E-2 sponsorship, f = F-series visa holders |
No output schema declared.
No examples provided.
What is the LucyESL — English teaching jobs in Korea MCP server?
LucyESL — English teaching jobs in Korea is an MCP server listed in the public MCP registry as com.lucyesl/jobs. English-teaching jobs in South Korea: salary, disclosure and by-region stats. Read-only, no key. This page covers its hosted endpoint (https://lucyesl.com/mcp).
Is the LucyESL — English teaching jobs in Korea MCP server safe to use?
LucyESL — English teaching jobs in Korea scores 75 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 LucyESL — English teaching jobs in Korea MCP server expose?
LucyESL — English teaching jobs in Korea exposes 7 tools: search, fetch, search_jobs, get_job, salary_stats, and 2 more. Their descriptions and schemas cost roughly 518 tokens of context every time the server is loaded.
Does the LucyESL — English teaching jobs in Korea MCP server require authentication?
No. We connected to LucyESL — English teaching jobs in Korea without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the LucyESL — English teaching jobs in Korea MCP server still maintained?
LucyESL — English teaching jobs in Korea is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.