---

name: extract-artifacts version: 2.0.0 description: | Reads any Layer 1 source file (skill report, meeting note, news item, discussion, or document) and extracts structured Layer 2 cards into the artifact knowledge base. Deduplicates by canonical ID, merges additive fields, logs conflicts, and updates all Layer 3 indexes. Run after any skill that produces a source, or drop a raw input (meeting note, WhatsApp summary, news item) and run manually.

triggers:

• extract artifacts
• extract cards
• process this source
• ingest this meeting
• ingest this paper review
• update the knowledge base

input:

• source_file_path: path to the Layer 1 source file (mutually exclusive with --dir)
• --dir: path to a skill workspace directory; auto-discovers and processes all extractable files in dependency order
• --dry-run: print what would be written without writing (optional)
• --force: re-extract even if source is already marked extracted: true (optional)

output:

• cards/paper-cards/ — new and updated paper cards (claims/evidence inline in card body)
• cards/persons/ — new and updated person cards
• cards/organizations/ — new and updated organization cards
• cards/experiments/ — new and updated experiment cards (from experiment-report sources only)
• indexes/ — paper-registry, person-index, organization-index, topic-map, experiment-registry updated
• _conflicts.md — any conflicts appended for human review
• source file — Extracted Cards section added, frontmatter marked extracted: true
• extractions/{slug}_{date}/ — phase workspace with intermediate artifacts

note: claim-ledger.md is retired. Run /synthesize-hypotheses separately to update hypothesis-ledger.md after new paper cards are created.

allowed-tools:

• Agent
• Read
• Write
• Edit
• Glob
• Grep
• Bash

---

/extract-artifacts

Any Layer 1 source file → entity cards extracted → knowledge base updated → indexes current.

Mode routing: if --dir is provided, skip to Directory Mode and follow that section's loop — do not run the single-file Setup. Otherwise follow Setup → Phase 1–4 → Completion.

---

Agent Spawn Convention

All agent definitions live in agents/ alongside this SKILL.md. Always subagent_type="claude". Inject the agent definition and all required context into the prompt.

[Orchestrator]
Read: .claude/skills/extract-artifacts/agents/<agent-name>.md → AGENT_DEF

Agent(
  subagent_type="claude",
  description="<short description>",
  prompt="""
{AGENT_DEF}

---

## Context for this invocation

<task-specific variables and paths>
"""
)

---

Setup

Read config/workspace.json → CONFIG.

OUTPUT_ROOT    = resolve(CONFIG.output_root)
ANALYTICS_PATH = CONFIG.analytics_folder + "/events.jsonl"

Analytics — write start event (append to ANALYTICS_PATH via write_file mode=append):

RUN_ID = "ea-{YYYYMMDD-HHMMSS}"
MODE   = "--dir" if dir mode else "single"

{"ts":"{ISO_NOW}","run_id":"{RUN_ID}","event":"skill_start","skill":"extract-artifacts","version":"2.0.0","mode":"{MODE}","input_summary":"{source_path_or_dir}"}

If ANALYTICS_PATH does not exist yet, create it (empty file) before appending.

Resolve source_path to an absolute path. If the path does not exist, stop with:

Error: source file not found: {source_path}

Read source_path frontmatter only (first ~20 lines). Check:

• source_type present? If not → stop: "source_type missing from frontmatter. Add it and retry."
• extracted: true present? If yes and --force not set → stop: "Already extracted. Use --force to re-extract."

Set:

SOURCE_TYPE  = frontmatter.source_type
SOURCE_DATE  = frontmatter.source_date
CLAIM_CEILING = {
  skill-report      → observed,
  experiment-report → observed,
  document          → plausible,
  meeting-note      → speculative,
  discussion        → speculative,
  news-item         → speculative
}[SOURCE_TYPE]

SOURCE_SLUG = {first 4 significant words of filename, hyphens, lowercase}
WORKSPACE   = {OUTPUT_ROOT}/extractions/{SOURCE_SLUG}_{SOURCE_DATE}/

Create WORKSPACE directory. Write state.json:

{
  "source_path": "...",
  "source_type": "...",
  "source_date": "...",
  "claim_ceiling": "...",
  "workspace": "...",
  "output_root": "...",
  "phase": "setup",
  "dry_run": false,
  "force": false
}

Print: Source: {source_path} | Type: {SOURCE_TYPE} | Ceiling: {CLAIM_CEILING}

---

Directory Mode (--dir)

Use when pointing at a completed research or review workspace directory instead of a single source file. Processes all extractable files in the correct dependency order so that paper cards exist before claims reference them, and claim cards exist before evidence cards reference them.

Step 1 — Detect workspace type

Read config/workspace.json → OUTPUT_ROOT = resolve(config.output_root).

Resolve {dir} to an absolute path. Scan for marker files:

| Marker present | Detected type | |----------------|---------------| | workspace_manifest.md | custom — parse manifest's processing_plan | | 01_claim_registry.md | paper-review | | 05_claim_evidence_ledger.md or 05_evidence_ledger.md | deep-research |

If no marker matches, stop:

Error: cannot detect workspace type in {dir}.
Add a workspace_manifest.md or point to a single file instead.

Step 2 — Build processing plan

paper-review — process in this order:

| # | File | Role | |---|------|------| | 1 | 00_paper_content.md | Paper metadata + cited papers | | 2 | 01_claim_registry.md | Structured claims | | 3 | 04_final_review.md | Synthesis + QML criteria verdicts |

deep-research — process in this order:

| # | File | Role | |---|------|------| | 1 | 01_literature_merged.md | All surveyed papers | | 2 | 05_claim_evidence_ledger.md (fallback: 05_evidence_ledger.md) | Claims + evidence items | | 3 | 06_final_report.md | Synthesis + conclusions |

custom — read the processing_plan list from workspace_manifest.md frontmatter (see format below).

Skip any file in the plan that does not exist on disk — print a warning and continue.

Step 3 — Loop: run Phase 1–4 for each file

For each file in the plan:

1. Set:

   source_path    = {dir}/{file}
   SOURCE_TYPE    = skill-report          ← injected; do NOT read from file frontmatter
   SOURCE_DATE    = file frontmatter.source_date if present, else today's date
   CLAIM_CEILING  = observed
   SOURCE_SLUG    = {first 4 significant words of filename, hyphens, lowercase}
   WORKSPACE      = {OUTPUT_ROOT}/extractions/{SOURCE_SLUG}_{SOURCE_DATE}/
   

2. Skip the source_type and extracted: true frontmatter checks — workspace files are not expected to carry them.
3. Write state.json and print: [{N}/{total}] {file} — Ceiling: observed
4. Run Phase 1 → Phase 4 for this file, passing SOURCE_TYPE = skill-report as an explicit context variable to the source-classifier (not derived from file frontmatter).
5. After Phase 4 completes, record counts from {WORKSPACE}/02_write_report.md into a running total.
6. Print: → Created: {N} Merged: {N} Conflicts: {N}

Carry --dry-run and output_root from the dir-mode invocation into every file's run. If --dry-run, skip Phase 4 for all files.

Step 4 — Print combined summary

✓ /extract-artifacts --dir complete

Directory:  {dir}
Type:       {workspace_type}
Files:      {processed}/{total}  (skipped: {N})

Cards written (total):
  Created:   {N}
  Merged:    {N}
  Conflicts: {N}  →  {OUTPUT_ROOT}/_conflicts.md
  Skipped:   {N}

Indexes updated: paper-registry, person-index, organization-index, topic-map

Tip: run /synthesize-hypotheses to update hypothesis-ledger.md from the new paper cards.

If any conflicts: ⚠ {N} conflict(s) need human review → {OUTPUT_ROOT}/_conflicts.md

---

workspace_manifest.md format (custom workspaces)

---
workspace_type: custom
source_date: {YYYY-MM-DD}
processing_plan:
  - file: 00_paper_content.md
    role: Paper metadata
  - file: 01_claim_registry.md
    role: Claims
  - file: 04_final_review.md
    role: Final synthesis
---

Place this file in the workspace directory. The source_date applies to all files unless a file's own frontmatter overrides it.

---

Phase 1 — Source Classification

Goal: Parse the source file and extract all raw entities into a structured document.

Agent: agents/source-classifier.md

Read: .claude/skills/extract-artifacts/agents/source-classifier.md → AGENT_DEF

Agent(
  subagent_type="claude",
  description="Parse source file and extract all raw entities",
  prompt="""
{AGENT_DEF}

---

## Context for this invocation

source_path: {source_path}
source_type: {SOURCE_TYPE}
claim_status_ceiling: {CLAIM_CEILING}
workspace: {WORKSPACE}

Read the source file at source_path. Extract all entities per your protocol.
Write output to: {WORKSPACE}/00_source_parsed.md
"""
)

Gate Phase 1 → Phase 2:

• {WORKSPACE}/00_source_parsed.md exists and is non-empty ✓
• No validation errors reported in the parsed document ✓

Update state.json: "phase": "phase-1-complete".

---

Phase 2 — Entity Generation

Goal: Assign canonical IDs to all extracted entities and generate complete card bodies.

Agent: agents/entity-extractor.md

Read the card schemas to inject:

Read: artifacts/paper_card_schema.md        → PAPER_SCHEMA
Read: artifacts/person_card_schema.md       → PERSON_SCHEMA
Read: artifacts/organization_card_schema.md → ORG_SCHEMA

If SOURCE_TYPE == experiment-report, also read:

Read: artifacts/experiment_card_schema.md → EXPERIMENT_SCHEMA

Note: claim_card_schema and evidence_card_schema are retired. Claims and evidence are embedded inline in paper card bodies.

Read: .agents/skills/extract-artifacts/agents/entity-extractor.md → AGENT_DEF

Agent(
  subagent_type="claude",
  description="Generate canonical card content for all extracted entities",
  prompt="""
{AGENT_DEF}

---

## Context for this invocation

workspace: {WORKSPACE}
source_type: {SOURCE_TYPE}
claim_status_ceiling: {CLAIM_CEILING}
source_path: {source_path}
output_root: {OUTPUT_ROOT}

## Card Schemas (use these as the template for each card type)

### Paper Card Schema
{PAPER_SCHEMA}

### Person Card Schema
{PERSON_SCHEMA}

### Organization Card Schema
{ORG_SCHEMA}

### Experiment Card Schema (only if source_type is experiment-report)
{EXPERIMENT_SCHEMA}

Read: {WORKSPACE}/00_source_parsed.md
Generate canonical IDs and complete card bodies for paper, person, and organization entities (or,
if source_type is experiment-report, for the experiment entity) only.
Claims and evidence are embedded inline in the paper card body — do NOT create separate claim or evidence cards.
Write output to: {WORKSPACE}/01_entities.md
"""
)

Gate Phase 2 → Phase 3:

• {WORKSPACE}/01_entities.md exists ✓
• ID Assignment Log section present ✓

Update state.json: "phase": "phase-2-complete".

---

Phase 3 — Card Writing

Goal: Create new cards or merge into existing ones. Log conflicts.

Agent: agents/card-writer.md

Read: .claude/skills/extract-artifacts/agents/card-writer.md → AGENT_DEF

Agent(
  subagent_type="claude",
  description="Write or merge entity cards into the artifact repo",
  prompt="""
{AGENT_DEF}

---

## Context for this invocation

workspace: {WORKSPACE}
output_root: {OUTPUT_ROOT}
source_path: {source_path}
conflicts_path: {OUTPUT_ROOT}/_conflicts.md

Read: {WORKSPACE}/01_entities.md
For each entity: check {OUTPUT_ROOT}/cards/{type}/{id}.md, create or merge, log conflicts.
Write output to: {WORKSPACE}/02_write_report.md
"""
)

Gate Phase 3 → Phase 4:

• {WORKSPACE}/02_write_report.md exists ✓
• Summary counts present (created, merged, conflicts) ✓

If --dry-run: print the write report and stop. Do not proceed to Phase 4.

Update state.json: "phase": "phase-3-complete".

---

Phase 4 — Index Update

Goal: Update all four indexes to reflect new and updated cards. Mark source as extracted.

Agent: agents/index-updater.md

Read: .claude/skills/extract-artifacts/agents/index-updater.md → AGENT_DEF

Agent(
  subagent_type="claude",
  description="Update knowledge base indexes and mark source as extracted",
  prompt="""
{AGENT_DEF}

---

## Context for this invocation

workspace: {WORKSPACE}
output_root: {OUTPUT_ROOT}
source_path: {source_path}
source_date: {SOURCE_DATE}

Read: {WORKSPACE}/02_write_report.md
Update indexes in {OUTPUT_ROOT}/indexes/.
Append Extracted Cards section to {source_path}.
Mark {source_path} frontmatter: extracted: true, extracted_date: {today}.
"""
)

Gate Phase 4 → Completion:

• paper-registry.md updated (rows added/updated) ✓
• Source file has ## Extracted Cards section ✓
• Source frontmatter has extracted: true ✓

Note: claim-ledger.md is retired — do not update it. Run /synthesize-hypotheses after extraction to update hypothesis-ledger.md.

---

Completion

Analytics — write end event (append to ANALYTICS_PATH):

{"ts":"{ISO_NOW}","run_id":"{RUN_ID}","event":"skill_end","skill":"extract-artifacts","version":"2.0.0","outcome":"success","duration_s":{elapsed},"output_path":"{WORKSPACE}"}

Read {WORKSPACE}/02_write_report.md for counts. Print:

✓ /extract-artifacts complete

Source:   {source_path}
Type:     {SOURCE_TYPE}
Ceiling:  {CLAIM_CEILING}

Cards written:
  Created:   {N}
  Merged:    {N}
  Conflicts: {N} — see {OUTPUT_ROOT}/_conflicts.md
  Skipped:   {N}

Indexes updated: paper-registry, person-index, organization-index, topic-map
Workspace: {WORKSPACE}

Tip: run /synthesize-hypotheses to update hypothesis-ledger.md from the new paper cards.

If any conflicts were logged, add:

⚠  {N} conflict(s) need human review → {OUTPUT_ROOT}/_conflicts.md

---

Fast Mode (--dry-run)

Runs Phases 1–3 only. Prints the write report. Does not write any cards or update any indexes. Use to preview what would change before committing.

---

Failure Modes to Avoid

❌ Reading source_type from frontmatter in --dir mode — SOURCE_TYPE is always injected as skill-report for workspace files
❌ Re-extracting an already-extracted source without --force — check extracted: true
❌ Skipping conflict logging — every disagreement must be recorded
❌ Letting index-updater run if card-writer reported zero cards — nothing to index
❌ Hardcoding output_root — always read from config/workspace.json