# CODEX.md

**Canonical:** https://apis.io/providers/codex-md/  
**APIs profiled:** 0

CODEX.md is a project-level Markdown memory file that the OpenAI Codex CLI loads to bootstrap an AI coding agent with persistent project instructions, coding conventions, build and test commands, and team conventions. The OpenAI Codex CLI now standardizes on AGENTS.md as the canonical filename, with CODEX.md and codex.md historically used and still recognized as fallback configuration filenames. Files are discovered through a three-tier hierarchy spanning the user's home directory, the Git repository root, and the current working directory, with closer files overriding earlier guidance when concatenated into the model prompt.

## Kin Score — 7.6 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 7.6).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

AI Agents, AI Copilot, Coding Standards, Configuration, Developer Workflow, Memory, OpenAI Codex

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