beads/docs/graph-links.md

Graph Links in Beads

Beads supports several types of links between issues to create a knowledge graph. These links enable rich querying and traversal beyond simple blocking dependencies.

Link Types

replies_to - Conversation Threading

Creates message threads, similar to email or chat conversations.

Created by:

• bd mail reply <id> command

Use cases:

• Agent-to-agent message threads
• Discussion chains on issues
• Follow-up communications

Example:

# Original message
bd mail send worker-1 -s "Review needed" -m "Please review bd-xyz"
# Creates: bd-a1b2

# Reply (automatically sets replies_to: bd-a1b2)
bd mail reply bd-a1b2 -m "Done! Approved with minor comments."
# Creates: bd-c3d4 with replies_to: bd-a1b2

Viewing threads:

bd show bd-a1b2 --thread

relates_to - Loose Associations

Bidirectional "see also" links between related issues. Not blocking, not hierarchical - just related.

Created by:

• bd relate <id1> <id2> - Links both issues to each other

Removed by:

• bd unrelate <id1> <id2> - Removes link in both directions

Use cases:

• Cross-referencing related features
• Linking bugs to associated tasks
• Building knowledge graphs
• "See also" connections

Example:

# Link two related issues
bd relate bd-auth bd-security
# Result: bd-auth.relates_to includes bd-security
#         bd-security.relates_to includes bd-auth

# View related issues
bd show bd-auth
# Shows: Related: bd-security

# Remove the link
bd unrelate bd-auth bd-security

Multiple links: An issue can have multiple relates_to links:

bd relate bd-api bd-auth
bd relate bd-api bd-docs
bd relate bd-api bd-tests
# bd-api now relates to 3 issues

duplicates - Deduplication

Marks an issue as a duplicate of a canonical issue. The duplicate is automatically closed.

Created by:

• bd duplicate <id> --of <canonical>

Use cases:

• Consolidating duplicate bug reports
• Merging similar feature requests
• Database deduplication at scale

Example:

# Two similar bug reports exist
bd show bd-bug1  # "Login fails on Safari"
bd show bd-bug2  # "Safari login broken"

# Mark bug2 as duplicate of bug1
bd duplicate bd-bug2 --of bd-bug1
# Result: bd-bug2 is closed with duplicate_of: bd-bug1

# View shows the relationship
bd show bd-bug2
# Status: closed
# Duplicate of: bd-bug1

Behavior:

• Duplicate issue is automatically closed
• Original (canonical) issue remains open
• duplicate_of field stores the canonical ID

supersedes - Version Chains

Marks an issue as superseded by a newer version. The old issue is automatically closed.

Created by:

• bd supersede <old-id> --with <new-id>

Use cases:

• Design document versions
• Spec evolution
• Artifact versioning
• RFC chains

Example:

# Original design doc
bd create --title "Design Doc v1" --type task
# Creates: bd-doc1

# Later, create updated version
bd create --title "Design Doc v2" --type task
# Creates: bd-doc2

# Mark v1 as superseded
bd supersede bd-doc1 --with bd-doc2
# Result: bd-doc1 closed with superseded_by: bd-doc2

# View shows the chain
bd show bd-doc1
# Status: closed
# Superseded by: bd-doc2

Behavior:

• Old issue is automatically closed
• New issue remains in its current state
• superseded_by field stores the replacement ID

Schema Fields

These fields are added to issues:

Field	Type	Description
replies_to	string	ID of parent message (threading)
relates_to	[]string	IDs of related issues (bidirectional)
duplicate_of	string	ID of canonical issue
superseded_by	string	ID of replacement issue

Querying Links

View Issue Details

bd show <id>

Shows all link types for an issue:

bd-auth: Implement authentication
Status: open
Priority: P1

Related to (3):
  bd-security: Security audit
  bd-users: User management
  bd-sessions: Session handling

View Threads

bd show <id> --thread

Follows replies_to chain to show conversation history.

JSON Output

bd show <id> --json

Returns all fields including graph links:

{
  "id": "bd-auth",
  "title": "Implement authentication",
  "relates_to": ["bd-security", "bd-users", "bd-sessions"],
  "duplicate_of": "",
  "superseded_by": ""
}

Comparison with Dependencies

Link Type	Blocking?	Hierarchical?	Direction
blocks	Yes	No	One-way
parent_id	No	Yes	One-way
relates_to	No	No	Bidirectional
replies_to	No	No	One-way
duplicate_of	No	No	One-way
superseded_by	No	No	One-way

Use Cases

Knowledge Base

Link related documentation:

bd relate bd-api-ref bd-quickstart
bd relate bd-api-ref bd-examples
bd relate bd-quickstart bd-install

Bug Triage

Consolidate duplicate reports:

# Find potential duplicates
bd duplicates

# Merge duplicates
bd duplicate bd-bug42 --of bd-bug17
bd duplicate bd-bug58 --of bd-bug17

Version History

Track document evolution:

bd supersede bd-rfc1 --with bd-rfc2
bd supersede bd-rfc2 --with bd-rfc3
# bd-rfc3 is now the current version

Message Threading

Build conversation chains:

bd mail send dev -s "Question" -m "How does X work?"
bd mail reply bd-q1 -m "X works by..."
bd mail reply bd-q1.reply -m "Thanks!"

Best Practices

1. Use relates_to sparingly - Too many links become noise
2. Prefer specific link types - duplicates is clearer than generic relates_to
3. Keep threads shallow - Deep reply chains are hard to follow
4. Document supersedes chains - Note why version changed
5. Query before creating duplicates - bd search first

See Also

• Messaging - Mail commands and threading
• Dependencies - Blocking dependencies
• CLI Reference - All commands