---

name: "calibre-metadata-apply" description: "Edit Calibre metadata through verified dry-run and apply gates." metadata: {"openclaw":{"requires":{"bins":["node","calibredb"],"env":["CALIBRE_PASSWORD"]},"optionalBins":["pdffonts"],"optionalEnv":["CALIBRE_USERNAME"],"primaryEnv":"CALIBRE_PASSWORD","localWrites":["skills/calibre-metadata-apply/state/runs.json"],"modifiesRemoteData":["calibre:metadata"]}}

calibre-metadata-apply

Use for Calibre metadata writes. This skill can change remote Calibre metadata.

Routing

Use when user explicitly asks to edit/fix/update/change:

• title, title_sort
• authors, author_sort
• series, series_index
• tags, publisher, pubdate, languages
• comments, analysis, analysis_tags

Do not use for read-only requests such as ID1021 を確認して, 詳細, show/view/check. Route those to calibre-catalog-read.

ID + edit verb means this skill. ID without edit verb means read-only.

Supported Fields

Core fields:

• title, title_sort
• authors as string with & or array, author_sort
• series, series_index
• tags as string or array, publisher, pubdate as YYYY-MM-DD, languages
• comments

Extended fields:

• comments_html: OC marker block upsert.
• analysis: auto-generates analysis HTML for comments.
• analysis_tags: adds tags.
• tags_merge: default true.
• tags_remove: remove specific tags after merge.

Safety Contract

Required flow:

1. Run read-only lookup to narrow candidates.
2. Show id,title,authors,series,series_index.
3. Get user confirmation for target IDs.
4. Build JSONL only for confirmed IDs.
5. Dry-run first.
6. Apply only after explicit user approval.
7. Re-read and report final values.

Never:

• Apply ambiguous title matches.
• Include unconfirmed IDs.
• Auto-fill low-confidence candidates.
• Start calibre-server.
• Pass Calibre password inline.
• Use direct calibredb for chat/agent edit operations; use wrapper scripts.

Local Facts

Read the workspace AGENTS.md ## Tools section for Content server URL, library id, auth, and reading script.

Connection bootstrap:

• Do not ask the user for --with-library first.
• First use saved defaults with no explicit --with-library.
• Scripts auto-load .env.
• Non-SSL auth is Digest; do not pass auth-mode/auth-scheme flags.
• Ask for URL only after command output shows unresolved connection.
• Prefer env-based password with --password-env CALIBRE_PASSWORD; username auto-loads from env, or override with --username.

Requirements: calibredb and node; pdffonts optional/recommended for PDF evidence checks.

Commands

Dry-run: cat changes.jsonl | node skills/calibre-metadata-apply/scripts/calibredb_apply.mjs --password-env CALIBRE_PASSWORD --lang ja

Apply: cat changes.jsonl | node skills/calibre-metadata-apply/scripts/calibredb_apply.mjs --password-env CALIBRE_PASSWORD --lang ja --apply

Run state: node skills/calibre-metadata-apply/scripts/run_state.mjs upsert --run-id --session-key --task --state running node skills/calibre-metadata-apply/scripts/handle_completion.mjs --run-id --result-json /tmp/result.json

Unknown-Document Recovery

Use when title/author/series are missing or unreliable.

Default stage is light pass:

1. Analyze existing metadata only.
2. Present all rows, not samples.
3. Stop for user instruction before deeper inspection.

On request:

• Page-1 pass: first page only.
• Deep pass: first 5 + last 5 pages and web evidence.
• Apply gate: explicit approval before writes.

Proposal synthesis:

• Collect evidence from file extraction and web sources when metadata is missing.
• Show one merged proposal table with id, current fields, candidate fields, source, confidence high|medium|low, and sort candidates.
• Apply only approved/finalized fields.
• If confidence is low or sources conflict, keep fields empty.
• Use pending-review tag for unresolved/hold items; do not force guesses.

Required report shape for batch recovery:

• execution summary with target/changed/pending/skipped/error.
• full changed list with id and key before/after fields.
• full pending list with id and reason.
• full error list with id and error summary.

Extraction And Sort

• Try ebook-convert first.
• If empty/failed, fallback to pdftotext.
• If both fail, switch to web-evidence-first mode.
• Use the Calibre reading_script in the workspace AGENTS.md ## Tools section for Japanese/non-Latin sort fields.
• Default policy is full reading, no truncation.
• Ask once on first use only when the workspace AGENTS.md ## Tools section lacks the configured reading script.

Heavy Analysis

Delegate only independent proposal generation. Main owns target selection, final judgment, dry-run, apply, and reporting.

1. Define a self-contained task with input paths, evidence limits, and output contract.
2. Call OpenClaw sessions_spawn with the live tool schema:
   • runtime: "subagent"
   • agentId: "calibre-reader"
   • mode: "run"
   • context: "isolated"
   • lightContext: true
   • omit model and thinking; the target agent profile owns them.
3. Save the returned run/session identifiers and task with scripts/run_state.mjs upsert.
4. Use sessions_yield when completion belongs in a later turn. Do not poll session or subagent lists.
5. Save result JSON and run scripts/handle_completion.mjs --run-id ... --result-json ....
6. Return a proposal or apply result only after the existing user gate is satisfied.

Use Swarm only when the user requests a large batch that divides into independent evidence rows. Collector children remain read-only; the main session owns synthesis and every write gate.

Data flow:

• Local execution reads Calibre metadata/files and writes metadata only after approval.
• Child execution may receive extracted source/evidence for candidate generation.
• Child must not apply metadata or message the user.
• If the user declines external model/subagent processing, keep the flow local.