# Hjarni

**Canonical:** https://apis.io/providers/hjarni-com/  
**Website:** https://hjarni.com/  
**APIs profiled:** 1

Hjarni provides a long‑term memory platform for AI assistants like ChatGPT and Claude. It offers a Markdown knowledge base where users can store notes, organize them with tags and containers, and export or import data. The service includes an official MCP server, API reference, and integrations with popular tools, enabling persistent context for conversational AI.

## Kin Score — 56.4 / 100 (strong)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 67.5 |
| Contract Governance | 22.0 |
| Operational Transparency | 23.8 |
| Developer Ergonomics | 58.9 |
| Access Clarity | 63.8 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 32.7 (matched via fallback).

## Agent readiness — 48.8 (agent-ready)

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

## Access

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

## APIs (7)

- **Hjarni Containers API** — Folders (containers) that hold notes and other folders, and their AI instructions.
- **Hjarni Dashboard API** — Counts and recent notes, in one call.
- **Hjarni Files API** — Attaching files to notes.
- **Hjarni Me API** — The account and the token making the request.
- **Hjarni Notes API** — Markdown notes, their links, revision history and Trash.
- **Hjarni Search API** — Full-text search over notes.
- **Hjarni Tags API** — Tags that label notes across folders.

## Agentic access (1)

- **Hjarni Agentic Access** — 46 operations · 28 acting

## Security (4)

- **Hjarni Authentication** — 1 scheme
- **Hjarni Domain Security** — TLSv1.3 · HSTS · DMARC
- **Hjarni Vulnerability Disclosure** — no policy recorded
- **Hjarni Trust Center** — SOC 2, ISO 27001, PCI DSS, GDPR

## Plans (1)

- **Hjarni Plans Pricing**

## Tags

Company, Artificial Intelligence, Memory, Knowledge Base, Integration

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