Using Waymarks

Waymarks are structured code annotations using the ::: sigil that enable humans and AI agents to leave durable, greppable breadcrumbs in codebases. This skill provides comprehensive guidance for authoring and searching waymarks without requiring the wm CLI tool.

Overview

A waymark is a comment containing the ::: sigil that embeds machine-readable context directly adjacent to code. Waymarks unify decades of ad-hoc comment patterns (TODO, FIXME, MARK, etc.) into one predictable grammar that works across all programming languages.

Core properties:

• •Greppable: Find all waymarks with rg ':::'
• •Language-agnostic: Works in any language with comments
• •Tool-independent: Parse without AST access
• •Durable: Survives refactors and formatting

Grammar Quick Reference

Every waymark follows this structure:

[comment leader] [signals][marker] ::: [content]

Components:

1. •Comment leader: Language-specific comment syntax (//, #, <!--, --, etc.)
2. •Signals (optional): ~ (flagged/in-progress), * (starred/priority)
3. •Marker (required): Single lowercase keyword from the blessed list
4. •::: sigil (required): Exactly three ASCII colons with spaces around them
5. •Content (optional): Free text with embedded properties, tags, and mentions

Examples:

// todo ::: implement rate limiting
// *fix ::: security vulnerability in auth handler
// ~todo ::: refactoring in progress on this branch
// ~*fix ::: critical bug I am actively working on

Signals

Two signals are available:

• •Tilde (~): Flagged, indicating work actively in progress on the current branch. Clear all flagged waymarks before merging.
• •Star (*): Starred, indicating high priority or importance.

When combining signals, use ~* (flagged first, then starred). Double signals (**, ~~) are invalid.

See references/grammar.md for the complete grammar specification.

Markers

Markers categorize waymark intent. Only blessed markers are recognized by default; custom markers require configuration.

Work / Action

• •todo - Task to complete
• •fix (alias: fixme) - Bug to address
• •wip - Work in progress
• •done - Completed task (temporary handoff marker)
• •review - Needs code review
• •test - Needs testing
• •check - Needs verification

Information

• •note - General observation
• •context (alias: why) - Background or reasoning
• •tldr - File-level summary (one per file, at top)
• •about - Section or block summary
• •example - Usage example
• •idea - Suggestion or proposal
• •comment - General commentary

Caution / Quality

• •warn - Warning about behavior
• •alert - Critical attention needed
• •deprecated - Outdated code
• •temp (alias: tmp) - Temporary code
• •hack (alias: stub) - Workaround or temporary solution

Workflow

• •blocked - Cannot proceed
• •needs - Dependency required

Inquiry

• •question (alias: ask) - Needs clarification

See references/markers.md for the complete marker list with usage guidance.

Writing TLDRs

TLDR waymarks provide file-level summaries that help humans and agents quickly understand file purpose. They are the most important waymark in any file.

Essentials

• •One per file: Exactly one tldr ::: per file
• •First waymark: Place after shebang/frontmatter, before code
• •8-14 words: Concise, active voice sentence
• •Capability-first: Lead with what the file delivers

Placement

The TLDR must be the first waymark in the file:

// tldr ::: handles user authentication and session management

import { hash } from 'bcrypt';

After language preambles:

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# tldr ::: manages database migrations and schema versioning

import sqlite3

For documentation files, use HTML comments with #docs tag:

---
title: API Guide
---

<!-- tldr ::: REST API reference with authentication examples #docs -->

# API Guide

Sentence Patterns

Write one sentence, 8-14 words, active voice:

Avoid:

• •"This file contains..." (implicit)
• •"Utilities for..." (vague)
• •"Module that handles..." (filler)

Use *tldr for critical files that must be read first (entry points, core infrastructure). Audit periodically with rg '\*tldr\s*:::'.

See references/tldr-patterns.md for extended patterns and examples.

Writing About Waymarks

about ::: markers describe the code section immediately following them. They provide quick breadcrumbs for classes, functions, and major blocks.

Placement and Scope

Place about ::: on the comment line directly above the construct:

// about ::: validates JWT tokens and extracts claims
export function validateToken(token: string): Claims {
  // ...
}

Focus on the upcoming section only. Do not restate the file-level TLDR:

// tldr ::: user authentication service

// about ::: validates password against security policy
function validatePassword(password: string) {}

// about ::: hashes password with bcrypt
function hashPassword(password: string) {}

Sentence Patterns

Write short, active-voice sentences (6-12 words):

Update about ::: markers when behavior changes. Delete stale markers rather than leaving inaccurate guidance.

See references/about-waymarks.md for detailed patterns by language.

Properties, Tags, and Mentions

Properties

Properties use key:value pairs in the content:

// todo ::: implement caching owner:@alice priority:high
// note ::: reason:"waiting for API approval" status:blocked

Key format: [A-Za-z][A-Za-z0-9_-]* Value format: Unquoted token (no spaces) or double-quoted string

Tags (Hashtags)

Any # followed by non-whitespace is a tag:

// todo ::: optimize query #perf:hotpath
// fix ::: XSS vulnerability #sec:boundary

Use namespaces for organization:

• •#docs/* - Documentation (#docs/guide, #docs/api)
• •#perf:* - Performance (#perf:hotpath, #perf:slow)
• •#sec:* - Security (#sec:boundary, #sec:auth)
• •#arch/* - Architecture (#arch/entrypoint, #arch/state)

Before inventing a new tag, search for existing usage: rg '#perf'

Mentions (Actors)

Mentions start with @ followed by a lowercase letter:

// todo ::: @agent implement OAuth flow
// review ::: @alice check security implications

Valid mentions:

• •@agent - Any capable AI assistant
• •@alice, @bob - Named individuals
• •@dev-team - Groups (defined in config)

Place the actor immediately after ::: to assign ownership. Mentions later in the sentence indicate involvement without ownership.

Invalid patterns (not extracted as mentions):

• •user@example.com - Email addresses
• •@Component - Decorators (uppercase)
• •@angular/core - Scoped packages

Canonical References

Declare the authoritative anchor for a concept with ref:#token:

// tldr ::: authentication service ref:#auth/service

Reference elsewhere via relation properties:

• •see:#token - Related reference
• •docs:#token - Documentation reference
• •from:#token - Depends on or derived from
• •replaces:#token - Supersedes another waymark

// todo ::: implement refunds from:#payments/charge
// note ::: supersedes old implementation see:#legacy/auth

Docstring Compatibility

Waymarks complement docstrings; they never replace them. Place waymarks outside docstrings, adjacent to them:

TypeScript/JavaScript:

/**
 * Authenticates a user and returns a session token.
 * @param request - User login credentials
 * @returns Session token or throws AuthError
 */
// about ::: orchestrates OAuth flow with PKCE #auth/login
// todo ::: @agent add rate limiting #sec:boundary
export async function authenticate(request: AuthRequest) {
  // ...
}

Python:

def send_email(message: Email) -> None:
    """Send an email using the configured transport."""
    # about ::: orchestrates outbound email delivery #comm/email
    transport.send(message)

Go:

// sanitize normalizes webhook payloads before verification.
// about ::: ensures Stripe event payload conforms to canonical schema #payments/stripe
func sanitize(event Event) Event { /* ... */ }

Searching with Ripgrep

When the wm CLI is unavailable, use ripgrep to search for waymarks.

Basic Patterns

# All waymarks
rg ':::'

# By marker type
rg 'todo\s*:::'
rg 'fix\s*:::'
rg 'tldr\s*:::'
rg 'about\s*:::'

# By signal
rg '\*\w+\s*:::'           # Starred (high-priority)
rg '~\w+\s*:::'            # Flagged (in-progress)
rg '~\*\w+\s*:::'          # Both signals

# By mention
rg ':::\s*@agent'
rg ':::\s*@\w+'

# By tag
rg ':::.+#perf'
rg ':::.+#sec'
rg ':::.+#docs'

Pre-merge Audit

Before merging, verify no flagged waymarks remain:

# Check for flagged items (must clear before merge)
rg '~\w+\s*:::'

# Check for starred items (should address before merge)
rg '\*\w+\s*:::' && echo "Has starred items!"

# Check for WIP markers
rg 'wip\s*:::' && echo "Has WIP markers!"

Documentation TLDRs

# All doc TLDRs
rg 'tldr\s*:::.*#docs' -g '*.md'

# In HTML comments
rg '<!--\s*tldr\s*:::' -g '*.md'

See references/ripgrep.md for comprehensive search patterns.

Multi-line Waymarks

Continue waymarks using markerless ::: lines:

// todo ::: refactor authentication flow to support OAuth 2.0
//      ::: coordinate with @backend team on token format
//      ::: update documentation when complete

Align continuation ::: with the parent waymark's sigil for readability. Properties can appear on continuation lines:

// tldr  ::: payment processor service
// see   ::: #payments/core
// owner ::: @alice
// since ::: 2025-01-01

CLI Tool Note

The wm CLI provides additional capabilities beyond what ripgrep patterns offer:

• •Waymark IDs: Stable wikilink-style identifiers ([[a1b2c3d|my-feature]]) for cross-references
• •Formatting: Automatic alignment and normalization with wm fmt
• •Simplified queries: Structured filtering with wm find --type todo --mention @agent
• •Validation: Lint rules for unknown markers, duplicate properties, codetag patterns
• •Graph extraction: Dependency tracking with wm find --graph

For projects with the CLI installed, consider loading the waymark-cli skill for CLI-specific guidance.

Quick Reference

// Basic waymarks
// todo ::: implement validation
// fix ::: memory leak in handler
// note ::: assumes UTC timestamps

// With signals
// *fix ::: critical security vulnerability
// ~todo ::: refactoring in progress
// ~*todo ::: urgent fix I am actively working on

// With properties and tags
// todo ::: priority:high implement caching #perf
// warn ::: validates all inputs #security

// With mentions
// todo ::: @agent implement OAuth flow #auth
// review ::: @alice check authorization logic

// Section summary
// about ::: orchestrates email delivery #comm

// Relations
// todo ::: from:#auth/login add rate limiting
// note ::: see:#payments/stripe for webhook handling

Additional Resources

Reference Files

• •references/grammar.md - Complete grammar specification
• •references/markers.md - Full marker list with categories and aliases
• •references/tldr-patterns.md - Extended TLDR patterns by file type
• •references/about-waymarks.md - Section summary patterns by language
• •references/ripgrep.md - Comprehensive search patterns

Related Skills

• •waymark-cli - CLI usage, commands, and auditing workflows