Ecosystem Update - 2026-05-26

May 26, 2026 · generated by the ecosystem-update Claude Skill

TL;DR

One safe Quick Win was implemented: the existing SessionStart cached-repo-context hook now has a bounded timeout, matching the rest of the hook harness.
Today's strongest new research signal is CODESKILL: trajectory-derived, self-evolving skill banks for coding agents. It belongs in eval/design intake, not as an automatic runtime change.
The local Codex binary reports codex-cli 0.133.0-alpha.1; given the runtime posture against global under-development features, channel/version posture should be audited explicitly before any upgrade or rollback.

Quick Wins

Item	Source	Type	Impact	Effort	Action
SessionStart cached-context timeout	https://github.com/shanraisshan/codex-cli-best-practice and current `hooks.json` timeout conventions	hook	2	1	Add a `timeout` to the existing `rlm_session_preflight.py` hook so cached context cannot hold session startup indefinitely

Auto-Implemented

Added "timeout": 5 to the existing SessionStart hook for python3 /Users/chadsimon/.codex/bin/rlm_session_preflight.py.
Backed up config.toml, hooks.json, and current agent TOML files under /Users/chadsimon/.codex/backups/2026-05-26/.
Verified hooks.json with python3 -m json.tool /Users/chadsimon/.codex/hooks.json.
Smoke-ran python3 /Users/chadsimon/.codex/bin/rlm_session_preflight.py </dev/null; it exited 0.

Build Queue

CODESKILL trajectory-to-skill eval intake (research) - https://arxiv.org/abs/2605.25430v1 - Distill coding-agent trajectories into compact procedural skills with a stable skill bank. Current setup has evaluate, analyze, memory-consolidation, and many domain skills, but no explicit admission test for converting repeated failures into durable skill changes.
Session-scoped guardrail commands (hook) - https://howborisusesclaudecode.com/ - Boris/Thariq patterns mention on-demand guardrails like careful/freeze modes. Current setup has global Bash safety via pre_tool_guard.py; session-scoped modes would need a small design for how a user toggles them and how hooks read that state.
Codex version channel posture audit (Codex-md) - https://github.com/openai/codex/releases - Local codex --version reports an alpha build while AGENTS.md says not to enable under-development Codex features globally. This needs explicit user direction because rollback/upgrade touches the runtime install, not just harness config.

Research

CODESKILL: Learning Self-Evolving Skills for Coding Agents - Directly relevant to turning verified Codex task trajectories into compact, reviewable skill updates without unbounded skill growth.
IterInject: Indirect Prompt Injection Against LLM Agents via Feedback-Guided Iterative Optimization - Supports keeping outside content, memory promotion, and tool permissions under strict admission control.
FrontierOR: Benchmarking LLMs' Capacity for Efficient Algorithm Design in Large-Scale Optimization - Useful as a reminder that executable code is not enough; optimization/design tasks need hidden or objective performance checks, not only smoke tests.

Already Have

Native hooks enabled, UserPromptSubmit route classification, pre-tool Bash safety guard, post-tool verification and failure-context hooks, Stop and PreCompact omni-mem hooks, read-only explorer/planner/reviewer/validator agents, Python and TypeScript reviewers, workspace-write worker, conservative profiles, Starlark exec policy rules, OpenAI developer docs MCP with parallel tool calls, Browser/Chrome/Computer Use plugins, skill creator/installer/audit workflow, session recall via codex-session-search, omni-mem as the active memory system, goals enabled, /go-style closeout workflow, daily ecosystem state tracking, and a broad local skill library covering build, review, security, memory, browser, docs, spreadsheets, presentations, OpenAI APIs, and notifications.

Rejected

Wholesale import Boris, Awesome Claude Code, or Codex community skill packs - rejected: outside skills require strict audit, and the local skill set already covers the recurring workflows.
Auto-format hooks from community tips - rejected as a Quick Win: formatter hooks need repo-specific detection and an existing script; adding broad format commands globally would violate the no-new-script/no-arbitrary-hook limit.
Enable native Codex memories because community docs recommend it - rejected: current memory authority is omni-mem, and native memory enablement would change privacy/trust posture rather than add a small harness improvement.
Add or rely on AGENTS.override.md as a Quick Win - rejected: AGENTS policy docs are explicitly out of Quick Win scope, and current global policy requires the two Codex-owned AGENTS files to stay byte-identical.
Clone Agent View or other Claude-specific control planes - rejected: the current setup already has local task/goal/reporting primitives; a new session-control service would be orchestration without proof an existing primitive cannot satisfy the need.

Sources checked: https://github.com/hesreallyhim/awesome-claude-code, https://howborisusesclaudecode.com/, https://github.com/shanraisshan/codex-cli-best-practice, https://arxiv.org/search/?searchtype=all&query=LLM+agent+coding&order=-announced_date_first, https://arxiv.org/abs/2605.25430v1, https://arxiv.org/abs/2605.24659v1, https://arxiv.org/abs/2605.25246v1, https://github.com/openai/codex/releases Tier 2 fetched: yes Tier 3 fetched: no; skipped because the last full Tier 3 run was 2026-05-22, inside the 7-day window. Run at: 2026-05-26T10:30:36Z