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> 11 new playbooks added on September 15, 2026

11 new playbooks
5 categories
1234+ total

Developer Tools

7
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Developer Tools

Agent DX CLI Scale

A 7-axis, 0-21 scoring scale for evaluating how well a CLI is designed for AI agents rather than humans — machine-readable output, raw payload input, schema introspection, context-window discipline, input hardening, safety rails, and agent knowledge packaging.

5 minutes
Intermediate
Developer Tools

Long-Horizon Agent Prompting

Design the launch prompt for an agent working autonomously for hours or days — a pseudo-formal task brief with an exact success predicate, an enumerated non-counting-outcomes list, adversarial verification, and effort floors, because persistence pressure against a loose spec produces confident non-solutions.

10 minutes
Advanced
Developer Tools

Planning with Files

Persistent, file-based planning for multi-step AI-agent work — task_plan.md, findings.md, and progress.md on disk, a 2-action rule for capturing multimodal findings before they're lost, a 3-strike error protocol, and a 5-question reboot test to verify state survives a compaction.

5 minutes
Intermediate
Developer Tools

Secret Scan and Rotation

Find committed credentials in a repository's working tree and full history, triage real secrets from test fixtures, and drive rotation-first remediation — with an absolute rule against ever printing a secret's actual value, even during the scan itself.

5 minutes
Intermediate
Developer Tools

Self-Improvement Loop Design

Design systems where the harness itself is the optimization target — an optimization ladder from prompt to context to workflow to harness code, a two-split empirical acceptance gate, an outside-the-loop invariant for the evaluator, and a catalog of documented reward-hacking and collapse failure modes.

10 minutes
Advanced
Developer Tools

Skill Security Inspector

Review an AI agent skill before installing it using two independent lines — static scanner evidence plus source-aware semantic judgment — checking purpose fit, permission fit, sensitive access, external transmission, execution risk, and persistence, down to a clear APPROVE, CAUTION, or REJECT verdict.

10 minutes
Intermediate
Developer Tools

Tool Interface Design for Agents

Design agent-facing tools as contracts an agent must infer entirely from the description alone — the consolidation principle over narrow overlapping tools, architectural reduction toward primitives, actionable error-recovery messages, and an 8-point audit checklist.

10 minutes
Advanced

Academic Research

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Creative Writing

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Equity Research

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Productivity

1
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Open source · Copy-paste ready · Works with Claude Code out of the box