Agent skill

session-migration

Migrate session logs from markdown to JSON format. Use when PRs contain markdown session logs that need conversion to the new JSON schema, or when batch-migrating historical sessions.

View SKILL.md on GitHub Repository
Stars 163
Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/session-migration

Metadata

Additional technical details for this skill

type
utility
inputs 
[
    "markdown-session-logs",
    "directory-path"
]
domains 
[
    "session-protocol",
    "migration",
    "data-transformation"
]
outputs 
[
    "json-session-logs"
]

SKILL.md

Session Migration Skill

Converts markdown session logs to JSON format for deterministic validation.

Quick Start

powershell
# Migrate single file
pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/.agents/sessions/2026-01-09-session-385.json"

# Migrate all sessions in directory
pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/"

# Dry run to preview changes
pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/" -DryRun

# Force overwrite existing JSON
pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/" -Force

Triggers

Use this skill when:

  • migrate session logs - Convert markdown to JSON
  • convert sessions to JSON - Format migration
  • PR has old markdown sessions - In-flight PR migration
  • session validation failing - Regex issues with markdown format
  • batch migrate sessions - Historical log conversion

Context

Why JSON?

Markdown session logs required fragile regex patterns to validate:

  • **Branch**: vs Branch: vs Starting Branch:
  • Table parsing with varied column orders
  • Checkbox detection across different formats

JSON provides:

  • Deterministic key-based validation
  • Schema enforcement
  • No regex, no fuzzy matching
  • Clear structure for tooling

Schema Location

JSON sessions follow the schema at:

text
.agents/schemas/session-log.schema.json

Validator

JSON sessions are validated by:

text
scripts/Validate-SessionJson.ps1

Process

text
┌─────────────────────────────────────────────────────────┐
│ 1. INPUT                                                │
│    Markdown session log (.md)                           │
│    OR directory of .md files                            │
└─────────────────────────────────────────────────────────┘
                    │
                    ▼
┌─────────────────────────────────────────────────────────┐
│ 2. PARSE                                                │
│    • Extract session number from filename               │
│    • Extract date from filename                         │
│    • Find branch, commit, objective in content          │
│    • Parse checklist tables for completion status       │
└─────────────────────────────────────────────────────────┘
                    │
                    ▼
┌─────────────────────────────────────────────────────────┐
│ 3. TRANSFORM                                            │
│    • Build session object (number, date, branch, etc.)  │
│    • Build protocolCompliance object                    │
│    • Map checkbox [x] to complete: true                 │
│    • Extract evidence from table cells                  │
└─────────────────────────────────────────────────────────┘
                    │
                    ▼
┌─────────────────────────────────────────────────────────┐
│ 4. OUTPUT                                               │
│    Write .json file alongside .md                       │
│    (same name, different extension)                     │
└─────────────────────────────────────────────────────────┘

JSON Structure

json
{
  "session": {
    "number": 385,
    "date": "2026-01-09",
    "branch": "feat/session-init-skill",
    "startingCommit": "abc1234",
    "objective": "Session protocol validation improvements"
  },
  "protocolCompliance": {
    "sessionStart": {
      "serenaActivated": { "level": "MUST", "complete": true, "evidence": "Tool output" },
      "handoffRead": { "level": "MUST", "complete": true, "evidence": "Content in context" }
    },
    "sessionEnd": {
      "checklistComplete": { "level": "MUST", "complete": true, "evidence": "All [x] checked" },
      "validationPassed": { "level": "MUST", "complete": true, "evidence": "Exit code 0" }
    }
  },
  "workLog": [],
  "endingCommit": "",
  "nextSteps": []
}

Parameters

Parameter Type Required Description
-Path string Yes Path to .md file or directory
-Force switch No Overwrite existing .json files
-DryRun switch No Preview without writing files

Output

The script returns an array of migrated file paths (string[]) and prints a summary:

text
=== Migration Summary ===
Migrated: 356
Skipped (JSON exists): 0
Failed: 0

Exit Codes

Code Meaning Action
0 Success All files migrated or skipped (expected behavior)
1 Failure One or more files failed migration (check error output)

Return Value

powershell
# Returns array of paths to migrated JSON files
$migratedPaths = & .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/"
$migratedPaths | ForEach-Object { Write-Host "Created: $_" }

PR Migration Workflow

For PRs with in-flight markdown sessions:

  1. Check for markdown sessions in PR:

    bash
    git diff origin/main --name-only | grep -E '\.agents/sessions/.*\.md$'

  2. Run migration:

    powershell
    pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/"

  3. Validate migrated sessions:

    powershell
    Get-ChildItem .agents/sessions/*.json | ForEach-Object {
  pwsh scripts/Validate-SessionJson.ps1 -SessionLogPath $_.FullName
}

  4. Commit both formats (for transition period):

    bash
    git add .agents/sessions/*.json
git commit -m "chore(session): migrate session logs to JSON format"

Checklist Mapping

The migration script maps markdown checklist patterns to JSON keys.

Session Start Items

Regex Pattern JSON Key Level
activate_project serenaActivated MUST
initial_instructions serenaInstructions MUST
HANDOFF\.md handoffRead MUST
Create.*session.*log|session.*log.*exist|this.*file sessionLogCreated MUST
skill.*script skillScriptsListed MUST
usage-mandatory usageMandatoryRead MUST
CONSTRAINTS constraintsRead MUST
memor memoriesLoaded MUST
verify.*branch|branch.*verif|declare.*branch branchVerified MUST
not.*main|Confirm.*main notOnMain MUST
git.*status gitStatusVerified SHOULD
starting.*commit|Note.*commit startingCommitNoted SHOULD

Session End Items

Regex Pattern JSON Key Level
Complete.*session.*log|session.*log.*complete|all.*section checklistComplete MUST
HANDOFF.*read-only|Update.*HANDOFF handoffNotUpdated MUST NOT
Serena.*memory|Update.*memory|memory.*updat serenaMemoryUpdated MUST
markdownlint|markdown.*lint|Run.*lint markdownLintRun MUST
Commit.*change|change.*commit changesCommitted MUST
Validate.*Session|validation.*pass|Route.*qa validationPassed MUST
PROJECT-PLAN|task.*checkbox tasksUpdated SHOULD
retrospective retrospectiveInvoked SHOULD

Troubleshooting

JSON already exists

Use -Force to overwrite:

powershell
pwsh .claude/skills/session-migration/scripts/Convert-SessionToJson.ps1 -Path ".agents/sessions/" -Force

Some sessions fail validation after migration

Expected for genuinely incomplete sessions. The migration preserves the actual state of checkboxes. Review failed sessions manually.

Pattern not detected

If a checklist item isn't detected, the markdown format may be non-standard. The script uses flexible regex but edge cases exist. Update the Find-ChecklistItem function patterns if needed.

Related

Skills

Skill Purpose
session-init Create new sessions in JSON format
session-log-fixer Fix validation failures

Schema and Validation

Resource Location Purpose
JSON Schema .agents/schemas/session-log.schema.json Defines required structure
JSON Validator scripts/Validate-SessionJson.ps1 Validates migrated JSON files
Legacy Validator scripts/Validate-SessionJson.ps1 Validates markdown (deprecated)

Architecture

  • ADR-014: Distributed handoff architecture (context for migration)

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