ontology-atlas: Instructions file for Codex

AGENTS.md

ontology-atlas AGENTS.md is an instructions file for Codex, OpenCode from wlsdks/ontology-atlas. It costs 2,029 tokens per session, scanned A, original, MIT.

The main contributor guide for Ontology Atlas, a local-first codebase map that connects product meaning with implementation evidence. It explains the project’s architecture, file structure, routes, operating checks, and supporting tools.

In plain words
What is it for?
Use it as the starting point for changes to Ontology Atlas, including its Markdown knowledge graph, Git-based workflow, agent interfaces, documentation, routes, and required development checks.
Why use it?
It gives people and coding agents the project’s non-negotiable rules before they make changes. It also explains how Atlas complements code search and indexes by preserving durable meaning, evidence, impact boundaries, and verification paths.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

This is wlsdks/ontology-atlas's own configuration. It tells Codex and OpenCode how to work on ontology-atlas itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ontology-atlas configures →

Reuse

Borrowing it

Nothing to install: this file belongs to wlsdks/ontology-atlas. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/wlsdks/ontology-atlas/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/wlsdks/ontology-atlas

Made for: Codex, OpenCode.

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Per session 2,029 This file is loaded in full into every session.
When invoked 2,029 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.02029 $0.02029
Opus 5.5 $0.00812 $0.00812
Sonnet 5.5 $0.00406 $0.00406
Haiku 4.5 $0.00203 $0.00203

Measured today against content hash c48fb06f0b33, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ontology-atlas AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 146 lines

How it starts

The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — ontology-atlas

Read only the task's authority.

Product and architecture

Ontology Atlas is a local-first codebase ontology: what code builds, why it is structured that way, and what changes affect. People and agents maintain the same Markdown frontmatter graph; Git is truth. Atlas adds reviewed product meaning to source evidence. Structural health is not accepted meaning.

  • docs/ONTOLOGY-ATLAS-SPEC.md §2/§5 is the sole public meta-model. Surfaces must offer typed agent facts and evidence a human can judge and correct.
  • No backend, login, auth, seed data, API routes, or server actions. output: 'export' is intentional. The macOS app carries MCP; mcp/ and cli/ also run from source. There is no npm package.
  • src/ follows app → views → widgets → features → entities → shared; root app/ is thin Next routing.
  • The renderer is custom canvas-2D ontology-map; one WebGL2 light layer draws light only; Graphology supplies ForceAtlas2 only. Another renderer needs a decision.
  • MCP internals split by responsibility.
  • State is React/URL/in-memory; IndexedDB stores only the vault handle. App and web share parser/data contracts, not identical screens.

Working and finishing

Deliver what was asked, at the scope intended. Make routine judgment calls yourself; ask only when readings lead to materially different work or new authority is needed, and name the decision and rule that cause the pause. If a better approach exists, say so in one sentence and continue as asked. Reuse decisions and approval while their content and conditions still hold.

Check git status; preserve unrelated changes and active processes. Use native search and targeted file reads for source and change-impact questions.

Finish with pnpm checks:changed -- --run and complete every recommendation. Stop after success unless a new edit, failure, or named risk requires more; do not add broad suites, repeat passing checks, or write tests that pin prose. .claude/rules/testing.md owns escalation. Report the outcome first, then the evidence and remaining limits. Never claim unperformed proof.

Read the full file on GitHub · 146 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today Changed c48fb06f0b33
  2. 14d ago Changed · -1 lines · -28 tokens per session 9dbfaecf294a
  3. 15d ago Changed · +1 lines · -29 tokens per session 97d54239c370
  4. 20d ago Changed · +1 lines · -31 tokens per session 90eaa826c7f4
  5. 22d ago Changed · +9 tokens per session 6abce9e9911f
  6. 23d ago Changed · +1 lines · +9 tokens per session 33737b0e6237
  7. 27d ago Changed · +1 lines · +23 tokens per session 0fefb7489d56
  8. 28d ago Changed · -28 lines · -340 tokens per session 5b722e41235c
  9. 1mo ago Changed · -1 lines · -7 tokens per session 2b9c6ebad83d
  10. 1mo ago First seen · 172 lines · 2,423 tokens per session scan A 9d9d722ac2c3

Subscribe to this mod's changes

ontology-atlas AGENTS.md is an instructions file published in the GitHub repository wlsdks/ontology-atlas (143 stars, last pushed yesterday), licensed MIT. It adds 2,029 tokens to every session, about $0.0081 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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