# Obsidian

**Canonical:** https://apis.io/providers/obsidian/  
**Website:** https://obsidian.md/  
**APIs profiled:** 10

Obsidian is a local-first knowledge base and note-taking app built on plain Markdown files. Obsidian itself does not publish a hosted SaaS API; programmatic access is provided through (1) the in-app Plugin API for community plugins, (2) the community-built Local REST API plugin that exposes vault operations over localhost HTTPS, and (3) optional paid add-on services Obsidian Sync and Obsidian Publish.

## Kin Score — 31.5 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 31.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 49.3 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 30.6 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (10)

- **Obsidian Plugin API** — In-app TypeScript/JavaScript Plugin API for building Obsidian plugins. Plugins access the Vault, Workspace, MetadataCache, file system, command palette, settings, editor, and Ma...
- **Obsidian Active File API** — The Active File API from Obsidian — 1 operation(s) for active file.
- **Obsidian Commands API** — The Commands API from Obsidian — 2 operation(s) for commands.
- **Obsidian Open API** — The Open API from Obsidian — 1 operation(s) for open.
- **Obsidian Periodic Notes API** — The Periodic Notes API from Obsidian — 2 operation(s) for periodic notes.
- **Obsidian Search API** — The Search API from Obsidian — 2 operation(s) for search.
- **Obsidian System API** — The System API from Obsidian — 3 operation(s) for system.
- **Obsidian Tags API** — The Tags API from Obsidian — 1 operation(s) for tags.
- **Obsidian Vault Directories API** — The Vault Directories API from Obsidian — 2 operation(s) for vault directories.
- **Obsidian Vault Files API** — The Vault Files API from Obsidian — 1 operation(s) for vault files.

## Agentic access (1)

- **Obsidian Agentic Access** — 31 operations · 20 acting

## Security (3)

- **Obsidian Authentication** — http · 1 scheme
- **Obsidian Domain Security** — TLSv1.3 · HSTS · DMARC
- **Obsidian Vulnerability Disclosure** — disclosure policy published

## Plans (1)

- **Obsidian Plans Pricing**

## Tags

Productivity, Knowledge-Management, Markdown, Notes, Local-First

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/obsidian/). Scores are computed from the provider's own public artifacts under a published rubric.