linear-mcp-lean (wiklob/linear-mcp-lean) is an MCP server listed on the M8ven Trust Index. It scores 60 out of 100, grade C. It declares 36 tools. No publisher has claimed this listing.

C
Caution
60/100

linear-mcp-lean

Self-hosted Linear MCP server with response-shape control — lean field-trimmed reads, minimal write acks, drop-in tool names. Built for token-frugal LLM agents.

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

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Who stands behind it

wiklob

Source: Glama · also listed on github_repo_search

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Install from

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
🚨
Known vulnerabilities in dependencies: 2 critical, 3 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 2 credentials: LINEAR_API_KEY, MCP_BEARER_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes36 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

get_issue

Retrieve a Linear issue by ID. Default → a minimal flattened field set; full:true → a documented richer superset (assignee, lifecycle timestamps, state type, parent, estimate, dueDate).

list_issues

List issues as a {issues, hasNextPage, cursor} envelope. Lean rows by default (identifier, title, state, statusType, priority, createdAt, blockedBy, labels, project{id}, projectMilestone{id}, gitBranchName); full:true adds description, url, assignee, milestone name, updatedAt per row. `query` is a c

list_projects

List projects as lean rows (id, name, status{name,type}) by default; full:true adds description, dates, lead, labels, initiatives. Optional state (lifecycle string), label (project label name), and team filters; includeCompleted:false excludes completed/canceled projects server-side.

get_project

Get one project. Default → id, name, description, labels[name]; full:true adds status{name,type}, dates, lead, initiatives.

list_milestones

List a project's milestones (id, name). `project` accepts a name or id.

get_milestone

Get one project milestone (id, name, description).

list_comments

List an issue's comments (id, body, authorName, createdAt). `issue` accepts an identifier (e.g. ENG-123) or id.

save_issue

Create (no `id`) or update (`id`) an issue. Returns only {id, identifier, state, url} — no full-object echo. id-or-name args (state/assignee/project/milestone/labels) resolve server-side; `blockedBy` takes issue identifiers; create requires `title` + `team`.

save_comment

Add a comment to an issue. Returns only {id, url}. `issue` accepts an identifier or id.

save_project

Create (no `id`) or update (`id`) a project. Returns only {id, name, url}. Create requires `name` + `team`; `addInitiatives` (names or ids) are attached after create.

save_milestone

Create (no `id`) or update (`id`) a project milestone. Returns only {id, name}. Create requires `name` + `project` (name or id).

get_team

Get one team by id, key, or name → {id, name, key}.

list_teams

List teams → [{id, name, key}]. `query` filters by name/key substring.

get_user

Get one user by id, "me", or name → {id, name, displayName, email, active}.

list_users

List users → [{id, name, displayName, email, active}]. `query` filters by name/displayName/email substring.

get_attachment

Get one attachment → {id, title, subtitle, url, sourceType}.

create_attachment

Link an external URL to an issue as an attachment → {id, title, url}. `issue` accepts an identifier or id.

create_attachment_from_upload

Finalize an upload: link an already-uploaded assetUrl to an issue → {id, title, url}. Call after prepare_attachment_upload + the client-side byte PUT.

prepare_attachment_upload

Get a presigned direct-upload URL (fileUpload) → {assetUrl, uploadUrl, headers, issue}. PUT raw bytes to uploadUrl with headers verbatim (client-side), then call create_attachment_from_upload.

get_document

Get one document → {id, title, content, slugId, updatedAt, project{id}}. `id` accepts a document id or slug.

list_documents

List documents as lean rows → [{id, title, slugId, updatedAt}] (no content).

save_document

Create (no `id`) or update (`id`) a document → {id, title, slugId}. Create requires `title`; `project` (name or id) resolves server-side.

list_issue_labels

List issue labels → [{id, name, color, isGroup}]. Optional `name` filter.

list_project_labels

List project labels → [{id, name, color, isGroup}]. Optional `name` filter.

create_issue_label

Create an issue label → {id, name, color}. `team` (name or id) scopes it to a team; omit for a workspace label.

list_issue_statuses

List workflow states → [{id, name, type, color}]. Optional `team` (name or id) scope.

get_issue_status

Get one workflow state → {id, name, type, color}.

list_cycles

List cycles → [{id, number, name, startsAt, endsAt}]. Optional `team` (name or id) scope.

get_status_updates

Get one status update by `id`, or list a project's/initiative's updates → [{id, body, health, createdAt, url, authorName}]. `type` selects project vs initiative.

save_status_update

Create (no `id`) or update (`id`) a project/initiative status update → {id, url, health}. Create requires the matching parent (`project` or `initiative`).

search_documentation

Search Linear's help-center documentation. Proxied to the hosted Linear MCP (no public GraphQL backing).

extract_images

Extract and fetch images from markdown content. Proxied to the hosted Linear MCP (content helper, no GraphQL backing).

get_diff

Exact lookup for a Linear diff (review URL, PR URL/ID, slug, or full identifier). Proxied to the hosted Linear MCP (no public GraphQL backing).

get_diff_threads

Exact lookup for diff review threads. Proxied to the hosted Linear MCP (no public GraphQL backing).

list_diffs

List Linear diff pull requests. Proxied to the hosted Linear MCP (no public GraphQL backing).

linear_graphql

Run an arbitrary GraphQL query or mutation against Linear's API (https://api.linear.app/graphql) and return the raw result. For the rare need neither the lean default nor full:true covers. Example: linear_graphql({query: "query($id:String!){ issue(id:$id){ identifier subscribers{ nodes{ name } } } }

// known CVEs in dependencies2 critical3 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.0.0GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

criticalvitest@3.0.0GHSA-9crc-q9x8-hgqq

Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configBYTE_LOG_PATH
🔐 secretLINEAR_API_KEYhand-written minimal GraphQL ├──▶ api.linear.app/graphql ()
🔐 secretMCP_BEARER_TOKENor ──POST /mcp (Bearer )──────▶ │
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

36/36 tools missing one or more hints — get_issue (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_issues (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_projects (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +33 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool handlers catch errors

Only 0/36 tool handlers wrap calls in try/catch (0%)

Wrap each tool handler body in try/catch and return a structured error response.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.0 (high), @modelcontextprotocol/sdk@1.12.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Dev dependencies

2 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: ea0a4227dc2905ca436911e6c84ed05918d99bc0
code hash: a473e3bf951414027afef5d5a94aef7b1c921c48ce53a0b772544f6490b3808a
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