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This connector has been deprecated

Duplicate listing of the same server under an old namespace. The maintained listing is Layero (ru.layero/layero): same endpoint https://mcp.layero.ru/mcp, current description and tools. The landing-page generator described here was removed in MCP 2.0.

Переменные окружения проекта

env_vars
Destructive

Project environment variables: list names, set them, remove them.

VALUES ARE NEVER READ BACK — not by you, not by the platform in its
response. Only names and lengths are returned. This is a deliberate rule
rather than an implementation limit: anything that reaches your answer
settles into the conversation history, and a secret that lands there
cannot be taken back. If the user asks "what is my key", say plainly
that you cannot show it and offer to set a new one.

`set` does not require knowing the other variables — the platform keeps
them. `unset` removes only the named ones.

A change needs a new deploy: variables are picked up at build time, not
on the fly. Say so, or the user will think nothing happened.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keysNoFor `action="unset"`: names of the variables to remove.
actionNo`list` — show the names (values are never returned), `set` — set the variables from `values`, `unset` — remove the variables listed in `keys`.list
valuesNoFor `action="set"`: name → value pairs. The project's other variables are kept — no need to send them again.
projectYesThe project: its slug (`my-site`) or id, as listed by `my_projects`. The site address works too (`https://clear-garden-vypm.layero.app` or just `clear-garden-vypm`) — note that the address host is NOT always the slug.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
changedNo
projectYes
variablesYes
next_actionYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changed
    • changedInput schema / properties / action / description
      Previous value: -"`list` — показать имена (значения не возвращаются никогда), `set` — задать переменные из `values`, `unset` — удалить переменные, перечисленные в `keys`."New value: +"`list` — show the names (values are never returned), `set` — set the variables from `values`, `unset` — remove the variables listed in `keys`."
    • changedInput schema / properties / keys / description
      Previous value: -"Для `action=\"unset\"`: имена переменных, которые убрать."New value: +"For `action=\"unset\"`: names of the variables to remove."
    • changedInput schema / properties / project / description
      Previous value: -"Проект: слаг (`my-site`) или id. Слаг — то, что видно в адресе сайта; если пользователь назвал сайт словами, возьми слаг из `my_projects`."New value: +"The project: its slug (`my-site`) or id, as listed by `my_projects`. The site address works too (`https://clear-garden-vypm.layero.app` or just `clear-garden-vypm`) — note that the address host is NOT always the slug."
    • changedInput schema / properties / values / description
      Previous value: -"Для `action=\"set\"`: пары имя → значение. Остальные переменные проекта сохранятся — присылать их заново не нужно."New value: +"For `action=\"set\"`: name → value pairs. The project's other variables are kept — no need to send them again."
  2. Changed4 schema fields changed
    • addedInput schema / properties / action / description
      Added value: +"`list` — показать имена (значения не возвращаются никогда), `set` — задать переменные из `values`, `unset` — удалить переменные, перечисленные в `keys`."
    • addedInput schema / properties / keys / description
      Added value: +"Для `action=\"unset\"`: имена переменных, которые убрать."
    • addedInput schema / properties / project / description
      Added value: +"Проект: слаг (`my-site`) или id. Слаг — то, что видно в адресе сайта; если пользователь назвал сайт словами, возьми слаг из `my_projects`."
    • addedInput schema / properties / values / description
      Added value: +"Для `action=\"set\"`: пары имя → значение. Остальные переменные проекта сохранятся — присылать их заново не нужно."
  3. Added

TDQS

A4.5/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

This is a strong disclosure: it explains that values are deliberately never returned, why that is so, how to respond if a user asks for a key, and that variables apply only at build time. These behaviors go well beyond the destructiveHint annotation and materially protect both the agent and the user from leaking secrets.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is longer than average but every sentence earns its place: the purpose is front-loaded, the critical never-read-back rule is emphasized, and the set/unset semantics plus deploy requirement are cleanly separated. It is dense without being bloated.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's destructive potential and the risk of secret leakage, the description covers all critical operational facts: what is returned, what is never returned, how set and unset behave, and the post-change deployment requirement. The output schema handles structural return details, so nothing an agent needs to call this safely is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema already has 100% description coverage, and descriptions for action, keys, values, and project are explicit. The tool description reinforces key semantics like 'set does not require knowing the other variables' and 'unset removes only the named ones', but these are largely restatements of the schema's own parameter descriptions rather than new meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a clear resource (project environment variables) and three specific verbs (list, set, remove), so an agent knows exactly what the tool is for. It also differentiates itself from sibling tools like list_environments by focusing on environment variables with mutating actions, not just environments.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives clear operational context: values are never read back, set preserves other variables, unset only affects named keys, and changes require a new deploy. It does not explicitly name alternatives or when-not-to-use conditions, but the action enum and resource scope make the intended usage evident.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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