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Agent skill

Linear Hello World

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query.

MITAuto-check passedBackend & APIs

Install Linear Hello World

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill linear-hello-world -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace linear-hello-world --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/linear-hello-world .claude/skills/linear-hello-world && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
linear-hello-world
GitHub stars
2.8k
Token cost
~1.2k tokens
SKILL.md length
480 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query.

  • Works in 6 steps: Inspect the repository runtime, package… → Select personal API key only for… → Pin a compatible @linear/sdk range or… → …
  • Establishing a new integration baseline without creating test issues
  • SKILL.md covers Overview, Prerequisites, Tool Discipline and Current Contract, plus 7 more sections
  • Reaches api.linear.app; needs API_KEY and ACCESS_TOKEN

What it does

Linear Hello World is an agent skill from jeremylongshore/tons-of-skills-marketplace. Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query. Use when establishing a new integration baseline without creating test issues. Trigger with "test Linear connection", "Linear hello world", or "verify Linear API key".

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Designed for Claude Code; live verification requires network access and an approved Linear workspace credential

It sits in Backend & APIs, covering GraphQL. It works with GraphQL and Linear. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Establishing a new integration baseline without creating test issues
  • With test Linear connection
  • Linear hello world
  • Verify Linear API key

Example prompts

  • “test Linear connection”
  • “Linear hello world”
  • “verify Linear API key”
  • “/linear-hello-world”

Requirements

  • A credential in API_KEY
  • A credential in ACCESS_TOKEN
  • Compatibility (from SKILL.md): Designed for Claude Code; live verification requires network access and an approved Linear workspace credential
  • Pre-approved tools (allowed-tools): Read, Glob, Grep, WebFetch, Write, Edit

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Inspect the repository runtime, package manager, secret-loading convention, and existing Linear client code.
  2. Select personal API key only for owner-controlled scripts or OAuth for applications used by others.
  3. Pin a compatible @linear/sdk range or construct a minimal GraphQL request using the correct authorization form.
  4. Query only viewer ID/display name and a small page of visible team IDs/keys; inspect GraphQL errors.
  5. Record SDK version, auth mode, endpoint, status, and counts without logging the token or returned personal content.
  6. Leave all create/update/delete operations for a separately approved workflow.

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Glob
    • Grep
    • WebFetch
    • Write
    • Edit

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.linear.app

    Also links to:

    • linear.app

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • API_KEY
    • ACCESS_TOKEN

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code; live verification requires network access and an approved Linear workspace credential

    From compatibility in the SKILL.md frontmatter.

Context cost

Linear Hello World loads about 1.2k tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 72 tokens; SKILL.md has 480 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~72
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 480 words, ~1,191 tokens.

Download SKILL.mdSave it as .claude/skills/linear-hello-world/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
linear-hello-world
description
Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query. Use when establishing a new integration baseline without creating test issues. Trigger with "test Linear connection", "Linear hello world", or "verify Linear API key".
allowed-tools
Read, Glob, Grep, WebFetch, Write, Edit
compatibility
Designed for Claude Code; live verification requires network access and an approved Linear workspace credential
argument-hint
[repository-path] [sdk|graphql]
version
1.13.0
author
Jeremy Longshore <jeremy@intentsolutions.io>
license
MIT
tags
saas, linear, connectivity
model
inherit
effort
high

Linear Read-Only Connectivity Proof

Overview

Verify endpoint, auth mode, viewer identity, and visible team count without spending the first test on a production write.

Prerequisites

  • The target repository, Linear workspace, environment, and accountable owner
  • Current security, privacy, compliance, capacity, and change-control requirements
  • An approved Linear credential only when a bounded live verification is necessary

Tool Discipline

Use Read, Glob, and Grep to inspect code, configuration, and evidence. Use WebFetch only for current first-party Linear documentation and package metadata. Use Write or Edit only for requested implementation with known target files. Never write credentials, customer content, unrestricted environment output, or unredacted GraphQL variables.

Current Contract

  • The GraphQL endpoint is https://api.linear.app/graphql and supports introspection.
  • Personal API keys use Authorization: <API_KEY> without Bearer; OAuth access tokens use Authorization: Bearer <ACCESS_TOKEN>.
  • The official TypeScript SDK accepts either apiKey or accessToken in LinearClient.

Authentication

Use a personal API key only for owner-controlled scripts, OAuth with PKCE for user-delegated applications, or an enabled client-credentials grant for approved automation. Personal keys use Authorization: <API_KEY>; OAuth tokens use Authorization: Bearer <ACCESS_TOKEN>. Store credentials server-side in an approved secret manager.

Treat app approval, team access, scope changes, credential creation, rotation, revocation, and production access as owner-approved actions.

Instructions

  1. Inspect the repository runtime, package manager, secret-loading convention, and existing Linear client code.
  2. Select personal API key only for owner-controlled scripts or OAuth for applications used by others.
  3. Pin a compatible @linear/sdk range or construct a minimal GraphQL request using the correct authorization form.
  4. Query only viewer ID/display name and a small page of visible team IDs/keys; inspect GraphQL errors.
  5. Record SDK version, auth mode, endpoint, status, and counts without logging the token or returned personal content.
  6. Leave all create/update/delete operations for a separately approved workflow.
Show full SKILL.md (189 more words)Show less

Approval Boundaries

Do not create, reveal, rotate, or revoke credentials; authorize an OAuth app; change scopes or team access; create, mutate, archive, or delete workspace data; configure or re-enable webhooks; import or export data; change roles, SCIM, or audit streaming; transmit diagnostics; change paid entitlements; or perform another production mutation without explicit approval from the accountable owner. Keep diagnosis read-only unless implementation was requested.

Output

Return the workspace and team scope, auth mode without credential value, files and contracts inspected, exact operation names, evidence collected, validation result, sensitive fields redacted, remaining risk, accountable owner, approval state, and rollback or next action.

Error Handling

ConditionResponse
401Verify secret injection and the auth-header form without printing the credential.
Viewer succeeds, teams emptyCheck workspace membership and team access; do not create into a fallback team.
GraphQL errors with dataReport the error path and treat the proof as incomplete.
SDK incompatibleCompare the installed package and Node version with current package metadata.

Examples

Use a compact handoff that makes scope, mutation authority, and verification evidence reviewable.

Input:

text
runtime=node20; client=sdk; auth=personal-key-reference; operation=viewer+teams(first:5)

Expected handoff:

text
endpoint=verified; viewer=present; visible-teams=count-only; mutations=0

Resources

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in skills/.curated/linear-hello-world of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/official-docs.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Linear Hello World next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Linear Hello World compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Linear Hello World this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.2kAutomated safety check: PassMIT
Linearletta-ai/lettabot327—~583Automated safety check: PassApache-2.0
Linear APInesszer/linear-cli138—~213Automated safety check: NotesMIT
Linearteam-mirai/mirai-gikai212—~1.9kAutomated safety check: PassAGPL-3.0
LinearRedWoodOG/Hermes-Desktop1772 repos~2.8kAutomated safety check: PassMIT
Linear CLIletta-ai/skills1491 repos~1.1kAutomated safety check: PassISC

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Works with

Categories

Questions about Linear Hello World

What does Linear Hello World do?

Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query. Linear Hello World is an agent skill from jeremylongshore/tons-of-skills-marketplace. Prove Linear authentication and workspace visibility with the smallest read-only GraphQL or SDK query.

When should I use Linear Hello World?

Linear Hello World fits situations like: establishing a new integration baseline without creating test issues; with test Linear connection; linear hello world; verify Linear API key.

How do I install Linear Hello World in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill linear-hello-world -a claude-code`. Or copy the skill folder (skills/.curated/linear-hello-world in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/linear-hello-world in your project. Claude Code loads it when a task matches its description.

How do I install Linear Hello World in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill linear-hello-world -a codex`. Or copy the skill folder (skills/.curated/linear-hello-world in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/linear-hello-world in your project. Codex loads it when a task matches its description.

Can I use Linear Hello World in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill linear-hello-world -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/linear-hello-world, .gemini/skills/linear-hello-world, .github/skills/linear-hello-world and .opencode/skills/linear-hello-world in your project.

What does Linear Hello World need to run?

Going by SKILL.md and its folder, Linear Hello World needs credentials named API_KEY and ACCESS_TOKEN. Our summary lists: A credential in API_KEY; A credential in ACCESS_TOKEN. Its frontmatter pre-approves these tools: Read, Glob, Grep, WebFetch, Write, Edit. Compatibility (from SKILL.md): Designed for Claude Code; live verification requires network access and an approved Linear workspace credential.

Does Linear Hello World access the network?

SKILL.md names 2 domains. In commands or code: api.linear.app; the agent is likely to contact it when it follows the instructions. As links in the text: linear.app. This is read from the text; nothing was executed.

Is Linear Hello World safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Linear Hello World use?

Linear Hello World is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Linear Hello World use?

About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 815 tokens, read only when the agent opens those files.

What are the alternatives to Linear Hello World?

Skills that share tags, products or a category with Linear Hello World: Linear (letta-ai/lettabot, 327 stars), Linear API (nesszer/linear-cli, 138 stars), Linear (team-mirai/mirai-gikai, 212 stars) and Linear (RedWoodOG/Hermes-Desktop, 177 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Linear Hello World?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.