aikido
About
This Claude Skill enables developers to practice aikido, a defensive martial art focused on redirecting aggression and de-escalation. It teaches core techniques like throws and joint locks, safe falling (ukemi), and maintaining calm under pressure. Use it to learn controlled, non-harmful resolution of conflict and to cultivate centeredness.
Quick Install
Claude Code
Recommendednpx skills add pjt222/agent-almanac -a claude-code/plugin add https://github.com/pjt222/agent-almanacgit clone https://github.com/pjt222/agent-almanac.git ~/.claude/skills/aikidoCopy and paste this command in Claude Code to install this skill
Documentation
Practice Aikido
Aikido practice → centering, blending incoming force, resolve conflict via controlled technique not strength vs strength.
Use When
- Learn defensive martial art → de-escalation + controlled resolution
- Redirect aggression → no unnecessary harm
- Build safe falling (ukemi) → any physical activity/emergency
- Cultivate calm centeredness under pressure
- Complement tai chi/meditation w/ partner practice (see
tai-chi,meditate) - Train awareness + response → multiple simultaneous threats
In
- Required: Practice space, padded/yielding (tatami, judo mats, grass; no concrete)
- Required: Comfortable clothing, full range (gi preferred; loose exercise OK)
- Optional: Training partner (essential for techniques; solo covers centering, ukemi, movement)
- Optional: Practice weapons (wooden: jo ~128cm, bokken ~102cm, tanto ~30cm)
- Optional: Exp level (beginner, intermediate, advanced; default: beginner)
- Optional: Time (min 20 min; rec 60-90 min)
Do
Step 1: Ground + Center
Every technique begins centered. No center → muscular struggle.
- Hanmi (half-facing stance): one foot forward, shoulder-width, 60°
- Knees bent slight → weight sinks → one-point (seika tanden), 5cm below navel
- Shoulders relax fully → drop from ears
- Extend awareness outward, anchor at one-point
- Test: partner pushes chest gently
- Resist upper body → not centered → relax, sink
- Stable no effort → centered
- Weight underside: heavy part of arm = underside; upper surface light, buoyant
- Extend ki: project calm forward thru fingertips — intention, not tension
→ Stable, relaxed stance. Pushes absorb thru structure → ground, not muscles. Quiet mind, broad awareness.
If err: Rigid → holding tension. Shake arms/legs, 5 breaths, restart. Pushes displace → lower center (bend more), focus one-point. Centering deepens months — initial wobbliness normal.
Step 2: Ukemi (Falling + Rolling)
Receive technique safely. Most important skill — thousands of falls.
Ukemi Progression:
┌────────────────────┬──────────────────────────┬───────────────────────────┐
│ Level │ Technique │ Practice Method │
├────────────────────┼──────────────────────────┼───────────────────────────┤
│ 1. Backward fall │ Sit down, roll back, │ From seated, then squat, │
│ (ushiro ukemi) │ slap mat with both arms │ then standing. Chin to │
│ │ at 45 degrees │ chest — never hit head │
├────────────────────┼──────────────────────────┼───────────────────────────┤
│ 2. Side fall │ Fall to the side, arm │ From kneeling, then │
│ (yoko ukemi) │ slaps mat, body in arc │ standing. Land on the │
│ │ — not flat on the back │ fleshy side, not hip bone │
├────────────────────┼──────────────────────────┼───────────────────────────┤
│ 3. Forward roll │ Roll diagonally over │ From kneeling, then │
│ (mae ukemi) │ shoulder: hand-forearm- │ standing, then moving. │
│ │ shoulder-opposite hip │ The line is diagonal, │
│ │ │ never straight over spine │
├────────────────────┼──────────────────────────┼───────────────────────────┤
│ 4. Breakfall │ High fall received with │ Only after forward roll │
│ (tobi ukemi) │ a slap and roll at speed │ is completely smooth. │
│ │ │ Build height gradually │
└────────────────────┴──────────────────────────┴───────────────────────────┘
Key principles:
- Slap absorbs impact → spreads force across arm → time it pre-body
- Tuck chin every fall → head never contacts ground
- Exhale on impact; held breath → rigid → injury risk
- Forward rolls round + smooth → thuds/flat = not curved
- Both sides: right + left shoulder forward
→ 2-3 months regular → forward rolls smooth + quiet both sides. Backward auto (no fear). Thrown moderate speed, no hesitate.
If err: Forward rolls → shoulder pain → angle too steep (over top, not diagonal across back). Partner/instructor checks line. Fear → kneeling ver, build up. Never force breakfall pre-second-nature forward roll.
Step 3: Basic Techniques
4 foundational techniques → most common attacks + core principles.
Technique Selection by Attack:
┌─────────────────┬──────────────────┬──────────────────────────────────────┐
│ Attack │ Technique │ Principle │
├─────────────────┼──────────────────┼──────────────────────────────────────┤
│ Straight strike │ Irimi-nage │ Enter behind the attack line, lead │
│ (shomen-uchi) │ (entering throw) │ attacker's head in a spiral, project │
├─────────────────┼──────────────────┼──────────────────────────────────────┤
│ Diagonal strike │ Shiho-nage │ Redirect the attacking arm overhead │
│ (yokomen-uchi) │ (four-direction │ in a spiral, control the wrist, cut │
│ │ throw) │ down to throw in any direction │
├─────────────────┼──────────────────┼──────────────────────────────────────┤
│ Wrist grab │ Kote-gaeshi │ Blend with the grab energy, apply │
│ (katate-dori) │ (wrist turn) │ outward wrist rotation to unbalance │
│ │ │ and project the attacker │
├─────────────────┼──────────────────┼──────────────────────────────────────┤
│ Lapel/shoulder │ Ikkyo │ Control the elbow and wrist, pin │
│ grab (ai-hanmi) │ (first teaching) │ the arm to the ground. Foundation │
│ │ │ for all immobilizations │
└─────────────────┴──────────────────┴──────────────────────────────────────┘
Per technique:
- Slow cooperative speed first
- Blend first: body off attack line (never block head-on)
- Connect: contact attacker's arm/body → feel balance
- Redirect: circular motion → guide energy into technique
- Complete: throw/pin w/ control — end encounter, not injure
- 10-20 reps/side, alternate roles (nage/tori throws, uke attacks + falls)
- Gradually increase speed + resistance as both gain proficiency
→ Smooth, circular. Attacker led not forced. Cooperative speed → both finish safely no strain.
If err: Needs muscle → blending incomplete → fighting not redirecting. Return to contact moment, practice blend isolated. Attacker yanked/wrenched → slow down, lead w/ center not hands.
Step 4: Blending (Tai Sabaki)
Body movement = engine. Technique no movement = wrestling.
- Irimi (entering): Step directly forward + past attacker, inside reach
- Practice: partner punches; step past → behind shoulder
- Tenkan (turning): Pivot 180° on front foot → redirect line
- Practice: partner grabs wrist; pivot smoothly → face same direction
- Irimi-tenkan (enter + turn): Combine — most common
- Practice: enter past attack, pivot → control behind
- Kaiten (rotation): Full body rotation → circular force for throws
- Practice: combined w/ shiho-nage + rotational techniques
- Solo first: step-pivot, step-pivot across mat
- Partner: match timing → move as they commit, not before/after
→ Fluid, centered, timed to attack. Defender never squared facing force → angled off line.
If err: Off timing (early/late) → slow telegraphed attack. Move same moment attack commits = "aiki" timing. Clumsy turns → tenkan standalone: 100 pivots/session → smooth auto rotation.
Step 5: Randori (Multiple Attackers)
Develops awareness + decisiveness when overwhelmed. Principles tested.
- 2 attackers slow → turns (not simultaneous)
- Core: never stop moving. Stationary = surrounded
- Each attacker = shield against others: redirect one → path of another
- Move to open space → never corner/wall
- Extend awareness all directions; no fixate on one (see
mindfulness) - Simple reliable techniques — complex fails under pressure
- Progress to 3, then 4, increase speed
- Not about defeating all → maintain center + freedom
→ Stay calm + mobile while approached multi-angle. Fluid technique, no freezing/tunnel.
If err: Panic → 2 slow attackers. Randori anxiety normal, decreases w/ exposure. Techniques collapse → simplify: irimi + tenkan only, no throws. Movement + positioning > execution in randori.
Step 6: Weapons Awareness
Deepens distance, timing, line — improves empty-hand.
- Jo (staff): 31-count jo kata → line + extension
- Teaches distance + space control
- Partner: jo-dori (staff taking) — disarm staff attack empty-hand
- Bokken (wooden sword): Suburi (cutting exercises) → precision + center line
- Teaches commitment: every cut precise line
- Partner: kumitachi (paired sword forms) → timing + distance
- Tanto (wooden knife): Tanto-dori (knife defense)
- Teaches respect close-range danger
- Always redirect weapon hand — never reach blade
- Principles transfer to empty-hand:
- Ma-ai (distance): too close invites weapon; too far wastes response
- Shomen (center line): all attacks/defenses relate to vertical center
- Zanshin (continuing awareness): alert after technique completes
→ Weapons clarify why tai sabaki, timing, distance matter. Empty-hand improves as movement precises.
If err: Weapons awkward/disconnected → suburi (solo cutting) 1 month before partner. Partner competitive/dangerous → slow down → wooden can injure at speed.
Step 7: Off-Mat Principles
Value beyond dojo → daily interaction + conflict resolution.
- Confrontation → mental irimi-tenkan: move toward concern (enter), redirect → common ground (turn)
- Physical space → awareness position, exits, body language (see
mindfulness) - "Receive" criticism/aggression no resistance — acknowledge energy, redirect
- Habit center before stress: drop to one-point, relax shoulders, extend calm
- Regular schedule:
- Solo (daily, 15-30 min): centering, ukemi, tai sabaki, suburi
- Partner (2-3x/week, 60-90 min): techniques, randori, weapons partner
- Complement tai chi → internal energy (see
tai-chi) - Complement meditation → stillness + equanimity (see
meditate)
→ Principles — blending, redirecting, centering — natural responses to daily conflict. Physical practice maintains + deepens martial skill.
If err: Lapses → smallest unit: 5 min centering + 20 rolls. Consistency > duration. Disconnected from daily → reflect: irimi = face problem direct; tenkan = change perspective; ukemi = recover setback.
Check
- Centered stance absorbs moderate pushes no muscular resistance
- Forward rolls smooth, quiet, both sides
- 4+ basic techniques cooperative w/ partner
- Tai sabaki (irimi, tenkan, irimi-tenkan) solo + partner
- Randori 2 slow attackers 60 sec no freezing
- 1+ weapon (jo, bokken, tanto) solo kata
- Solo + partner components regularly
Traps
- Muscle instead of blending: Needs strength → timing/angle wrong. Relax, re-enter, let attacker's energy work. Power from redirecting, not generating.
- Neglect ukemi: Avoid falling → avoid learning. Ukemi IS aikido. Every session, start.
- Fear of commitment: Half-hearted irimi → worst position — too close evade, too far control. Decide enter → commit fully.
- Fixate on one attacker: Tunnel vision dangerous. Soft wide awareness. Peripheral detects motion before focused.
- Compliant partners only: Beginners need cooperation; intermediate gradually more resistance. Technique only on cooperative = incomplete.
→
tai-chi— complementary internal; shares yielding principle, solo focusmindfulness— defensive awareness → perceptual foundation for martial readinessmeditate— seated meditation → centered equanimous mind under pressureheal— body mechanics from aikido → first aid + bodyworkredirect— AI variant; maps blending/redirection → conflicting demands + tool failures
GitHub Repository
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