Evernote Security Basics

What it does

When your agent uses it

• Securing API credentials
• Implementing OAuth securely
• Hardening Evernote integrations
• With phrases like evernote security

Example prompts

• “evernote security”
• “secure evernote”
• “evernote credentials”
• “/evernote-security-basics”

Requirements

• Node.js
• A credential in EVERNOTE_CONSUMER_KEY
• A credential in EVERNOTE_CONSUMER_SECRET
• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Write, Edit, Grep

Workflow steps

6 steps, taken from the step headings in SKILL.md.

1. 1Credential Management
2. 2Secure OAuth Flow
3. 3Encrypted Token Storage
4. 4Input Validation
5. 5Secure Logging
6. 6Token Lifecycle Management

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
  • Write
  • Edit
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).

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

• Network

  Links to these hosts (documentation or services it may open):

  • dev.evernote.com
  • owasp.org
  • nodejs.org

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

• Credentials

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

  • EVERNOTE_CONSUMER_KEY
  • EVERNOTE_CONSUMER_SECRET

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

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Evernote Security Basics loads about 1.2k tokens when it runs, and up to ~4.5k if it reads all its reference files. Until then it costs about 76 tokens; SKILL.md has 406 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~76

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

~4.5k

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

• NoteMentions a .env fileSKILL.md:41

  mmit credentials to source control. Add `.env` to `.gitignore`.

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). 406 words, ~1,172 tokens.

name

evernote-security-basics

description

Implement security best practices for Evernote integrations. Use when securing API credentials, implementing OAuth securely, or hardening Evernote integrations. Trigger with phrases like "evernote security", "secure evernote", "evernote credentials", "evernote oauth security".

allowed-tools

Read, Write, Edit, Grep

compatibility

Designed for Claude Code

version

1.13.0

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, evernote, api, security

// Load from environment, fail fast if missing
const requiredVars = ['EVERNOTE_CONSUMER_KEY', 'EVERNOTE_CONSUMER_SECRET'];
for (const v of requiredVars) {
  if (!process.env[v]) throw new Error(`Missing required env var: ${v}`);
}

// Generate CSRF token for OAuth state
const csrfToken = crypto.randomBytes(32).toString('hex');
req.session.oauthCsrf = csrfToken;

// Verify on callback
if (req.query.state !== req.session.oauthCsrf) {
  return res.status(403).send('CSRF validation failed');
}

function redactToken(token) {
  if (!token || token.length < 12) return '***';
  return token.slice(0, 8) + '...[REDACTED]';
}

© 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/evernote-security-basics of jeremylongshore/tons-of-skills-marketplace.

• SKILL.md
• references/implementation-guide.md

Open the folder on GitHubat commit cfae287