Convert raw or loosely formatted screenplay text (Chinese, English, or mixed — including Japanese broadcast-drama format and Chinese colon-style dialogue scripts) into professionally structured screenplay blocks and typeset plain text on a fixed typewriter character grid identical to narracore.cn. Free, local, unlimited — no account or key. Use it for screenplay formatting or import — NOT for general prose rewriting or story editing.

INPUT (contract_version 3) — two modes: • input_format="text" (default): line-based screenplay text, one element per line — scene headings ("INT. LAB - DAY", "第 N 场 …"), CHARACTER names in CAPS or CJK on their own line, short dialogue lines after them, standalone (…) parentheticals, standalone transitions ("CUT TO:", "切至：…"). Inline dialogue 名前「セリフ」 and 人名：台词 is parsed natively. An unbroken wall of text renders as continuous action and is flagged UNRESOLVED_STRUCTURE. • input_format="blocks": typed blocks validated and rendered EXACTLY as submitted, never re-classified; ids echoed. CHAINING: to run other tools on this screenplay, pass back the BLOCKS you received — not the plain text (it parses differently). • output="validate_only": structure check + diagnostics only. output="pdf_and_blocks" (the hosted service's default) is accepted here and delivers blocks + text, with the print-ready PDF available from the hosted service.

Before delivering: read diagnostics[] (code/severity/line or block_id/message/suggested_action) with the user; confidence = share of non-ambiguous lines, NOT accuracy.

Part of the Narracore toolkit — free, local, no account; long-form co-writing at narracore.cn.

Deterministic screenplay statistics from the Narracore analyzer (analyzer_version 1.0, same rules as narracore.cn): a scene list with structured scene headings (scene number / location / time of day / INT-EXT parsed from each heading), per-scene word count, dialogue ratio and action density, plus a character table (cue count, scenes present, dialogue lines, dialogue chars, share of dialogue). Accepts the same inputs as format_screenplay (input_format="text" or "blocks") — pass the SAME screenplay to both tools. When chaining tools, pass back the blocks you received (structured), not the formatted plain text. 剧本确定性统计：场景清单（结构化场景头）、逐场字数/对白占比/动作密度、角色戏份表。Part of the Narracore toolkit — free, local, no account; long-form co-writing at narracore.cn.

Scene-level "shootability" diagnosis for a screenplay, using the same ai-2.0 rules as narracore.cn: YOU (the calling AI) cite the evidence, the tool validates it and computes the score — no LLM inside. Two steps: (1) mode="material" returns each scene as a numbered block list ([n] [type] text), the strict findings JSON schema, and 6 problem types (abstract_psychology, literary_summary, unfilmable_information, unclear_space, weak_visible_action, unplayable_direction); (2) after analyzing the material yourself, call mode="score" with findings=[{scene, summary, problems:[{type, severity(low|medium|high), evidence (verbatim quote from the material), blocks (ordinals), suggestion}]}]. The tool maps ordinals to blocks, drops any finding whose evidence cannot be verified (that scene then scores null — never faked), and computes each scene's 0-100 score (severity-weighted evidence coverage, exact arithmetic) plus a reference-only structural baseline. 剧本逐场影视化度诊断：AI 举证、程序算分（0-100，证据核验，无效即空不冒充）。Part of the Narracore toolkit — free, local, no account; long-form co-writing at narracore.cn.

Convert between Narracore screenplay blocks and Fountain (the plain-text screenplay interchange format). direction="to_fountain": screenplay (input_format="text" or "blocks") → Fountain text (Latin content upper-cased per convention, CJK preserved verbatim; notes as [[…]]). direction="from_fountain": Fountain text → typed blocks you can pass straight to format_screenplay (input_format="blocks") — supports scene headings (INT/EXT/EST/I/E), character cues with (V.O.)-style extensions (extension becomes the delivery hint), parentheticals, dialogue, TO: transitions, > forced transitions, . forced action, [[notes]]; boneyard /…/ is stripped and reported, title-page keys and # section headers are skipped with warnings; mostly-Chinese content falls back to the Chinese screenplay parser (Fountain rules target Latin scripts). 剧本块与 Fountain 格式互转。Part of the Narracore toolkit — free, local, no account; long-form co-writing at narracore.cn.

Overview of the Narracore ecosystem: what this free local toolkit contains, how it relates to the hosted PDF-export service (narracore.app) and the long-form co-writing workbench (narracore.cn). Call this when the user asks what else Narracore offers or where to continue the work. No parameters.