Operon

tom@tomrochette.com (Tom Rochette) — Thu, 08 Oct 2026 00:00:00 +0000

Operon is a GPL-3.0 Obsidian plugin that turns a vault’s scattered checkboxes and notes into one indexed task system for humans and agents: tasks stay Markdown, every task carries a durable operonId, and agent writes land only through previewed, receipted plans issued by its own runtime.

The tracker inside the knowledge base is the differentiator, and the sealed preview-and-apply mutation gateway is the strongest agent-write contract in this category; nobody else here makes the agent’s edit a verified plan with a receipt.

What it is
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An Obsidian plugin (TypeScript, 1,060 commits) with a companion CLI (@stratejya/operon-cli, also GPL-3.0) and a 133-guide documentation site at operon.cc. Tasks remain Markdown in two forms: inline checkbox lines carrying {{key:: value}} containers, and file tasks with frontmatter, unified by one index keyed on operonId so the same task moves through Table, Calendar, Kanban, filters, recurrence, reminders, and time tracking without duplication. Agent access runs through the Agent Runtime: operon-cli with typed requests or persistent JSONL sessions for scripts and agents, an in-process Developer API for other Obsidian plugins, and a Property Catalog that exposes the vault’s own field names so an agent uses your conventions instead of guessing them. Every write goes through the Mutation Gateway’s preview-to-apply: the runtime computes what a change would do, seals that plan, applies only that plan, and returns receipts with postflight verification; direct Markdown editing stays supported as the unversioned path. The hasanyilmaz identity maintains it in ten interface languages.

Status
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Active and shipping steadily. As of 2026-10-08: 250 stars, 24 forks, 4 watchers, 7 open issues, 1 open pull request, created 2026-05-19, pushed 2026-10-06, latest release 3.12.0 on 2026-10-06 (after 3.11.0 on 2026-10-01 and 3.10.2 on 2026-09-28), 362 npm downloads last month for @stratejya/operon-cli, GPL-3.0 on both plugin and CLI.

The community footprint is the weak signal: an HN search for Operon and Obsidian returns zero hits and this run’s searches found no independent coverage, so the 250 stars rest on the project’s own growth curve. macOS is supported, native Linux and Windows 11 are public beta, WSL is unsupported, and the Runtime lives inside a running Obsidian process, so nothing works headless.

Strengths
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Tasks live where the human already works; the vault is the store and the notes are the context, with no second place to reconcile.
The sealed preview-and-apply write path with receipts and postflight verification is verification discipline the rest of this category leaves to agent discretion.
The Property Catalog and key mappings mean an agent reads the vault’s canonical vocabulary, not guessed YAML conventions.
Inline and file tasks convert both ways with identity preserved, so a task can grow into a note and shrink back without losing its record.

Cautions
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GPL-3.0 on both plugin and CLI, which triggers the corporate policy reviews this category’s MIT members do not.
No headless mode: the runtime requires a running Obsidian, so a server-side agent fleet cannot touch the tracker while the human is away.
One maintainer identity carries a 133-guide API surface, a bus-factor concentration It’s a Plan shares and the repo-local tools do not.
The zero-coverage signal above: nothing independent corroborates the adoption numbers yet.

Pricing
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Free and open source under GPL-3.0 (plugin and CLI). No paid tier or hosted service exists.

Compared to
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Backlog.md: both keep tasks as Markdown; Backlog.md lives in the project repository and gates on human review, Operon lives in the knowledge vault and gates on receipted plans.
beads: repo-local graph state for coding agents sharing a queue, versus a vault-local task system for humans and agents working side by side.
It’s a Plan: both give agents structured slots; It’s a Plan is a separate self-hosted server platform, Operon is inside the note-taking app.

Bottom line
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Recommended for Obsidian-based engineers who want agent work inside their vault and accept a single-maintainer plugin plus a running-Obsidian dependency. Not for server-side fleets (no headless runtime) or teams that need a standalone tracker with a vendor to escalate to. My disagreeable claim: receipted, previewed writes are a bigger agent-safety advance than this category has credited, and most tracker integrations are prompt conventions by comparison.

Changes
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2026-10-08 - Created after the entrant sweep; the sealed-plan agent runtime and the zero-HN footprint recorded.

References
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https://github.com/hasanyilmaz/operon - repository: README, surfaces, agent runtime introduction, topics (fetched 2026-10-08)
https://api.github.com/repos/hasanyilmaz/operon - stars, forks, dates, license as of 2026-10-08
https://raw.githubusercontent.com/hasanyilmaz/operon/main/README.md - inline and file tasks, operonId, the CLI and JSONL sessions, the 133 guides
https://operon.cc/docs/docs-118-operon-agent-runtime-overview/ - the sealed preview-and-apply mutation gateway, receipts, Property Catalog, platform support
https://api.npmjs.org/downloads/point/last-month/@stratejya/operon-cli - 362 downloads last month
https://api.github.com/repos/hasanyilmaz/operon-cli - the official CLI repository, GPL-3.0
https://api.github.com/repos/hasanyilmaz/operon/releases - 3.12.0 (2026-10-06) and the release train

gpl on tomrochette.com

Operon

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gpl on tomrochette.com

Operon

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