axiomantic/spellbook

Multi-platform AI assistant skills and workflows. Serious engineering. Also fun.

This repository also configures its own agents. See what spellbook tells them →

10Stars on the repository
188Mods indexed here, across every type
3d agoLast push, which is what freshness is scored on
MITLicence, which decides whether bodies are shown

estimating-tickets

25

axiomantic/spellbook

Skill Claude CodeCodex

Algorithmically estimate engineering tickets, JIRA cards, test cards, or feature requests. Produces well-scoped, AI-productivity-adjusted, PERT-buffered estimates with 80/90/95% confidence intervals for single and multi-engineer execution. Triggers - "estimate this ticket", "estimate this card", "size this", "story…

not rated 10 3d ago A SkillSpector: warn 113 tokens original MIT

executing-plans

26

axiomantic/spellbook

Skill Claude CodeCodex

Use when you have an implementation plan ready to execute. Triggers: 'run the plan', 'start building', 'execute the tasks', 'implement the steps', 'next task in the plan', 'work through the plan'. Also invoked by develop after planning phase completes. NOT for: creating plans (use writing-plans).

not rated 10 changed 1mo ago A SkillSpector: warn 71 tokens original MIT

fact-checking

27

axiomantic/spellbook

Skill Claude CodeCodex

Use when verifying technical claims in code, docs, or comments before merge. Triggers: 'is this claim correct', 'verify this', 'fact check', 'is this accurate', 'check these assertions', 'are these comments true'. NOT for: checking if AI hallucinated references (use dehallucination).

not rated 10 3d ago A SkillSpector: warn 68 tokens original MIT

finding-dead-code

28

axiomantic/spellbook

Skill Claude CodeCodex

Use when reviewing code changes, auditing new features, or cleaning up. Triggers: 'find dead code', 'find unused code', 'check for unnecessary additions', 'what can I remove', 'is this used anywhere', 'can I delete this', 'orphaned code', 'unused imports'.

not rated 10 3d ago A 66 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when implementation is complete, tests pass, and you need to decide the integration path. Also use when asked to prepare a branch for release: 'update changelog', 'bump version', 'bump patch version', 'make sure changelog is correct', 'make sure version is correct'. Triggers: 'done with this branch', 'ready to…

not rated 10 3d ago A SkillSpector: warn 134 tokens original MIT

fixing-tests

30

axiomantic/spellbook

Skill Claude CodeCodex

Use when tests themselves are broken, test quality is poor, or user wants to fix/improve tests. Triggers: 'test is broken', 'test is wrong', 'test is flaky', 'make tests pass', 'tests need updating', 'green mirage', 'tests pass but shouldn't', 'audit report findings', 'run and fix tests'. NOT for: bugs in production…

not rated 10 3d ago A SkillSpector: warn 90 tokens original MIT

fractal-thinking

31

axiomantic/spellbook

Skill Claude CodeCodex

Use when deeply exploring uncertainty, systematically decomposing complex questions, or gaining certainty about multi-faceted problems. Triggers: 'think deeply about', 'explore this recursively', 'I need certainty about', 'decompose this question', 'what am I missing'. Invoked by design-exploration, fact-checking…

not rated 10 3d ago A SkillSpector: pass 89 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when eliciting or clarifying feature requirements, defining scope, identifying constraints, or capturing user needs. Triggers: 'what are the requirements', 'define the requirements', 'scope this feature', 'user stories', 'acceptance criteria', 'what should this do', 'what problem are we solving', 'what are the…

not rated 10 3d ago A SkillSpector: pass 82 tokens original MIT

generating-diagrams

33

axiomantic/spellbook

Skill Claude CodeCodex

Use when generating flowcharts, diagrams, dependency graphs, or visual representations of processes, relationships, architecture, or state machines. Triggers: 'diagram this', 'flowchart', 'visualize', 'dependency graph', 'ER diagram', 'state machine diagram', 'class diagram', 'sequence diagram', 'map the…

not rated 10 3d ago A SkillSpector: pass 100 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when crafting, improving, or reviewing prompts, system prompts, skill instructions, or any text that instructs an LLM. Triggers: 'write a prompt', 'prompt engineering', 'improve this prompt', 'design a system prompt', 'write skill instructions', 'craft agent instructions'. Also invoked by writing-skills. NOT for…

not rated 10 3d ago A SkillSpector: warn 85 tokens original MIT

isolated-testing

35

axiomantic/spellbook

Skill Claude CodeCodex

Use when testing theories during debugging, or when chaos is detected. Triggers: "let me try", "maybe if I", "what about", "quick test", "see if", rapid context switching, multiple changes without isolation. Enforces one-theory-one-test discipline. Invoked automatically by debugging, scientific-debugging…

not rated 10 3d ago A SkillSpector: pass 78 tokens original MIT

managing-artifacts

36

axiomantic/spellbook

Skill Claude CodeCodex

Artifact storage paths and project-encoded conventions for generated documents, reports, plans, and audits. Loaded by the core rule module. Triggers: 'where should I put this', 'save report', 'output directory'.

not rated 10 3d ago A SkillSpector: warn 49 tokens original MIT

merging-worktrees

37

axiomantic/spellbook

Skill Claude CodeCodex

Use when merging parallel worktrees back together after parallel implementation, combining parallel development tracks, or unifying branches from dispatched parallel agents. Triggers: 'merge worktrees', 'combine parallel branches', 'integrate parallel work', 'all tracks complete', 'bring everything together'.

not rated 10 3d ago A SkillSpector: warn 60 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Detection heuristics for skill, command, and agent candidates and AGENTS.md knowledge gaps. The always-on opportunity-awareness rule module points here at pause points after substantive work.

not rated 10 3d ago A 38 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when instruction files (skills, prompts, CLAUDE.md) are too long or need token reduction while preserving capability. Triggers: 'optimize instructions', 'reduce tokens', 'compress skill', 'make this shorter', 'too verbose', 'this skill is too big', 'over the line limit', 'trim this down'.

not rated 10 3d ago A SkillSpector: pass 73 tokens original MIT

polish-repo

40

axiomantic/spellbook

Skill Claude CodeCodex

Use when improving project discoverability, attracting users/contributors, or presenting open source work. Triggers: 'write a README', 'improve README', 'get more users', 'attract contributors', 'add badges', 'create a logo', 'set up issue templates', 'audit this project', 'make this discoverable', 'why isn't anyone…

not rated 10 3d ago A SkillSpector: warn 116 tokens original MIT

reflexion

41

axiomantic/spellbook

Skill Claude CodeCodex

Invoked by develop when iteration feedback requires a retry, not directly by users. Prevents repeating the same mistakes across attempts. Also relevant when: 'why did this fail again', 'same error twice', 'what should I do differently', 'keep making the same mistake'.

not rated 10 3d ago A 59 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when implementation is done and you need a structured pre-PR review workflow. Triggers: 'ready for review', 'review my changes before PR', 'pre-merge check', 'is this ready', 'submit for review'. NOT for: post-merge review (use code-review) or deciding how to integrate (use finishing-a-development-branch).

not rated 10 3d ago A 77 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when git merge or rebase fails with conflicts, you see 'unmerged paths' or conflict markers (<<<<<<< =======), or need help resolving conflicted files. Triggers: 'merge conflict', 'fix the conflicts', 'conflicting changes', 'resolve conflicts', 'can't merge'.

not rated 10 3d ago A SkillSpector: pass 67 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when reviewing design documents, technical specifications, architecture docs, RFCs, ADRs, or API designs for completeness and implementability. Triggers: 'review this design', 'is this spec complete', 'can someone implement from this', 'what's missing from this design', 'review this RFC', 'is this ready for…

not rated 10 3d ago A SkillSpector: pass 92 tokens original MIT

axiomantic/spellbook

Skill Claude CodeCodex

Use when reviewing implementation plans before execution. Triggers: 'is this plan solid', 'review the plan', 'check before I start building', 'anything missing from this plan', 'will this plan work', 'audit the implementation plan'. NOT for: reviewing design documents (use reviewing-design-docs) or creating plans (use…

not rated 10 changed 1mo ago A SkillSpector: pass 77 tokens original MIT

reviewing-prs

46

axiomantic/spellbook

Skill Claude CodeCodex

Load before dispatching any subagent to review or triage a pull request, to pick the correct file version for the branch and worktree state. Required by: advanced-code-review (PR mode), code-review (--pr), distilling-prs (Phase 2), each of which names this skill at its dispatch point. Also use directly when: 'review…

not rated 10 3d ago A SkillSpector: pass 105 tokens original MIT

sharpening-prompts

47

axiomantic/spellbook

Skill Claude CodeCodex

Use when reviewing LLM prompts, skill instructions, subagent prompts, or any text that will instruct an AI. Triggers: "review this prompt", "audit instructions", "sharpen prompt", "is this clear enough", "would an LLM understand this", "ambiguity check". Also invoked by instruction-engineering, reviewing-design-docs…

not rated 10 3d ago A SkillSpector: warn 90 tokens original MIT

smart-reading

48

axiomantic/spellbook

Skill Claude CodeCodex

Full protocol for reading files or command output of unknown size: measure before reading, never truncate blindly, delegate large reads. Loaded by the file-reading rule module, which carries the one-line rule and points here.

not rated 10 3d ago A SkillSpector: warn 45 tokens original MIT

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