SiYuan API

Local SiYuan API integration for notebook, document, block, asset, database/attribute view, and limited SQL operations. Restricted to local HTTP endpoints and environment-based token auth.

SiYuan Skill

本技能用于调用本地运行的 SiYuan HTTP API，面向笔记本、文档、块、资源和受限查询场景。 它是一个 instruction-only skill：只描述允许调用的接口范围、约束和示例，不包含安装脚本、代理逻辑或可执行第三方依赖。

Security Scope

• Only call a local SiYuan endpoint: 127.0.0.1, localhost, or a user-provided local LAN address explicitly confirmed by the user.
• Never call third-party internet endpoints through SiYuan.
• Never hardcode, echo, or log SIYUAN_API_TOKEN.
• Treat this skill as high-trust local automation over the user's SiYuan workspace.
• Prefer note/block/document APIs over raw file APIs whenever both can solve the task.

Explicitly Disallowed Endpoints

Do not use the following APIs through this skill:

• /api/network/forwardProxy
• /api/convert/pandoc
• Any endpoint whose main purpose is external network access, command-style conversion, or indirect execution

Reason: these endpoints materially expand the attack surface beyond ordinary note management and are intentionally out of scope for this published skill.

Configuration

Configuration is provided via environment variables:

bash

export SIYUAN_API_TOKEN=your_token_here
export SIYUAN_API_URL=http://127.0.0.1:6806

• SIYUAN_API_TOKEN required: from SiYuan Settings > About
• SIYUAN_API_URL optional: defaults to http://127.0.0.1:6806

Before using the skill:

• confirm the endpoint is local
• confirm SiYuan is already running
• stop if the task requires internet proxying or document conversion via external tools

Allowed Operations

This skill is intended for the following operations:

• list, create, rename, move, and remove notebooks/documents
• create documents from Markdown
• insert, append, update, move, and delete blocks
• inspect and update database/attribute view rows and cells
• upload assets used by notes
• export Markdown content from documents
• run limited read-oriented SQL queries for note discovery or metadata inspection
• read or write workspace files only when the task is clearly about SiYuan-managed content or assets

Database / Attribute View Notes

SiYuan databases are exposed as Attribute Views. Use /api/av/* endpoints for database rows and cells; ordinary block attributes and SQL are not enough for this workflow.

Safe database workflow:

1. Read the database schema and values with /api/av/getAttributeView.
2. Find the target row by matching the primary block key value, usually the database's first/key column.
3. Use the matched value's blockID as itemID when updating cells.
4. Update one cell with /api/av/setAttributeViewBlockAttr, or multiple cells with /api/av/batchSetAttributeViewBlockAttrs.
5. Re-read the Attribute View to verify the saved values.

Important details:

• Prefer itemID; rowID is deprecated in upstream SiYuan and should not be used in new examples.
• /api/av/renderAttributeView returns display-oriented data. If a table is grouped, top-level view.rows can be empty while rows live under view.groups[*].rows.
• /api/av/getAttributeView returns storage-oriented av.keyValues, which is often more reliable for locating a row by accession/title/id.
• Database cell text does not reliably support Markdown tables. When a cell needs multiple records or structured notes, store them as newline-separated lines inside the field instead of Markdown table syntax.
• Do not update formula/template/created/updated/rollup-derived fields directly unless the user explicitly asks and the field type supports manual edits.

Common value payloads for cell updates:

javascript

{ text: { content: 'plain text' } }
{ url: { content: 'https://example.com' } }
{ number: { content: 36, isNotEmpty: true } }
{ checkbox: { checked: true } }
{ mSelect: [{ content: 'bulk', color: '1' }] }

SQL Guardrails

SQL access is powerful and should be treated conservatively.

• Prefer SELECT queries
• Keep result sets small with LIMIT
• Do not use SQL for broad destructive modification
• Prefer higher-level APIs over SQL when both can solve the task

Example safe pattern:

sql

SELECT id, content
FROM blocks
WHERE content LIKE '%keyword%'
LIMIT 10;

File API Guardrails

File APIs are in scope only for SiYuan workspace content, not for general system administration.

• Only access paths inside the SiYuan workspace
• Prefer /data/assets/, note-related paths, and explicit user-requested files
• Do not use file APIs to browse unrelated directories
• Do not remove or overwrite files unless the user clearly requested it

Safe Reference

Use the curated safe reference by default:

• references/safe-api.md

Only the curated safe reference is intended to be part of the published skill bundle. Full upstream API reference material should be maintained outside the published skill directory to avoid expanding the reviewed attack surface.

Common Examples

List Notebooks

javascript

const SIYUAN_API_TOKEN = process.env.SIYUAN_API_TOKEN;
const SIYUAN_API_URL = process.env.SIYUAN_API_URL || 'http://127.0.0.1:6806';

fetch(`${SIYUAN_API_URL}/api/notebook/lsNotebooks`, {
  method: 'POST',
  headers: {
    'Authorization': 'token ' + SIYUAN_API_TOKEN,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({})
});

Create Document with Markdown

javascript

const SIYUAN_API_TOKEN = process.env.SIYUAN_API_TOKEN;
const SIYUAN_API_URL = process.env.SIYUAN_API_URL || 'http://127.0.0.1:6806';

fetch(`${SIYUAN_API_URL}/api/filetree/createDocWithMd`, {
  method: 'POST',
  headers: {
    'Authorization': 'token ' + SIYUAN_API_TOKEN,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    notebook: 'notebook-id',
    path: '/doc-path',
    markdown: '# Title\n\nContent...'
  })
});

Append Block

javascript

const SIYUAN_API_TOKEN = process.env.SIYUAN_API_TOKEN;
const SIYUAN_API_URL = process.env.SIYUAN_API_URL || 'http://127.0.0.1:6806';

fetch(`${SIYUAN_API_URL}/api/block/appendBlock`, {
  method: 'POST',
  headers: {
    'Authorization': 'token ' + SIYUAN_API_TOKEN,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    parentID: 'parent-block-id',
    dataType: 'markdown',
    data: 'appended content'
  })
});

Read-Only SQL Query

javascript

const SIYUAN_API_TOKEN = process.env.SIYUAN_API_TOKEN;
const SIYUAN_API_URL = process.env.SIYUAN_API_URL || 'http://127.0.0.1:6806';

fetch(`${SIYUAN_API_URL}/api/query/sql`, {
  method: 'POST',
  headers: {
    'Authorization': 'token ' + SIYUAN_API_TOKEN,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    stmt: 'SELECT id, content FROM blocks WHERE content LIKE \"%keyword%\" LIMIT 10'
  })
});

Update Database Row Cells

javascript

const SIYUAN_API_TOKEN = process.env.SIYUAN_API_TOKEN;
const SIYUAN_API_URL = process.env.SIYUAN_API_URL || 'http://127.0.0.1:6806';

async function siyuanPost(path, body) {
  const response = await fetch(`${SIYUAN_API_URL}${path}`, {
    method: 'POST',
    headers: {
      'Authorization': 'token ' + SIYUAN_API_TOKEN,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify(body)
  });
  const result = await response.json();
  if (result.code !== 0) throw new Error(result.msg || `SiYuan API failed: ${path}`);
  return result.data;
}

const avID = 'database-attribute-view-id';
const accession = 'GSE174060';

const { av } = await siyuanPost('/api/av/getAttributeView', { id: avID });
const accessionKeyValues = av.keyValues.find((kv) => kv.key.name === 'accession');
const rowValue = accessionKeyValues.values.find((value) => value.block?.content === accession);
if (!rowValue) throw new Error(`No database row found for ${accession}`);

await siyuanPost('/api/av/batchSetAttributeViewBlockAttrs', {
  avID,
  values: [
    {
      keyID: 'title-field-key-id',
      itemID: rowValue.blockID,
      value: { text: { content: 'Dataset title' } }
    },
    {
      keyID: 'sample-count-field-key-id',
      itemID: rowValue.blockID,
      value: { number: { content: 36, isNotEmpty: true } }
    }
  ]
});

Notes

• Repeated createDocWithMd on the same path does not overwrite an existing document.
• Custom block attributes must be prefixed with custom-.
• All endpoints use POST and return { code, msg, data }.
• Header format is Authorization: token <your-token>.
• Database row updates use Attribute View itemID, not the displayed row index.
• If a task would require proxying, conversion tooling, or broad filesystem manipulation, do not use this skill as currently published.