# Relationship Astrology — Agent Interpretation Guide

> For agents using the astro MCP to perform relationship chart interpretation.
> Resource URI: `astro://guides/relationship-astrology`

## Quick Reference: Tool Call Strategy

```
synastry (basic)        → calculate_synastry_chart(p1, p2)
synastry + filters      → calculate_synastry_chart(p1, p2, karmic_filter=true)
synastry + Davison      → calculate_synastry_chart(p1, p2, include_davison_full=true)
composite chart         → calculate_composite_chart(p1, p2)
davison chart           → calculate_davison_chart(p1, p2)
relationship timing     → get_composite_transit_preview(p1, p2, start, end)
karmic relationship     → get_karmic_relationship_summary(p1_id, p2_id)
full relationship read  → synastry(karmic_filter=true) + composite + davison + karmic_summary
```

---

## Overview

Relationship astrology uses four main techniques to analyze the dynamics between two people:

| Technique | What It Shows | Tool |
|---|---|---|
| **Synastry** | Interaction patterns — how Person A's planets trigger Person B's planets | `calculate_synastry_chart` |
| **Composite Chart** | The relationship as its own entity — structure, identity, public face | `calculate_composite_chart` |
| **Davison Chart** | The relationship's "birth" — inner experience, emotional tone, long-term evolution | `calculate_davison_chart` |
| **Transit Timing** | When relationship themes are activated | `get_composite_transit_preview`, `get_davison_transit_preview` |

**For serious analysis, use all three main techniques plus natal charts.** They are complementary layers, not competing methods.

---

## Standard Relationship Reading Workflow

### Step 1: Natal Charts (Context)

**Call**: `calculate_natal_chart` for each person individually

Understand each person first. What are their core needs, attachment styles, relationship patterns? This provides context for everything that follows. Key questions:
- What does each person need from a relationship? (Moon sign/house, Venus sign/house)
- What are their relationship patterns? (7th house, Venus aspects, Saturn aspects)
- Where might they have karmic baggage? (South Node, Saturn, 12th house)

### Step 2: Synastry — Interaction Patterns

**Call**: `calculate_synastry_chart` (use `karmic_filter=true` for karmic focus, `significator_filter=true` for romantic focus)

Process the `summary` section:

1. **Top aspects** (summary.top_aspects): The 10-15 tightest interchart aspects — these are the strongest interaction patterns
2. **Venus-Mars contacts** (summary.venus_mars_contacts): Chemistry, sexual attraction, desire dynamics
3. **Sun-Moon contacts** (summary.sun_moon_contacts): Core compatibility, ego-emotion bonding
4. **Saturn contacts** (summary.saturn_contacts): Commitment, karma, heaviness, stability
5. **Node contacts** (summary.node_contacts): Fated connections, growth catalysts
6. **House overlays**: Which of Person A's planets fall in Person B's houses (and vice versa) — shows which life areas are activated

**Key Principle**: Each person **plays the role** of their planet in an interchart aspect. If A's Saturn conjuncts B's Sun, A takes on the Saturn role when B expresses Sun qualities.

### Step 3: Composite Chart — The Relationship Entity

**Call**: `calculate_composite_chart`

The composite chart describes the **relationship as its own entity**, not either person.

Reading order:
1. **Composite Ascendant**: How the relationship presents itself to the world
2. **Composite Sun**: Relationship identity and purpose
3. **Composite Moon**: Emotional tone, daily rhythms
4. **Angular planets** (conjunct ASC, MC, DSC, IC): Loudest voices in the relationship
5. **Key aspect patterns**: Especially Saturn, Pluto, Neptune
6. **House emphasis**: Which life areas the relationship focuses on
7. **Chart ruler**: How the relationship navigates challenges
8. **Unaspected planets**: Blind spots in the relationship

**Orb guidelines for composite**: 3° max (tighter than natal). Sub-1° = defining feature.

### Step 4: Davison Chart — Inner Experience

**Call**: `calculate_davison_chart` (or `calculate_synastry_chart` with `include_davison_full=true`)

The Davison chart is a **real chart at a real moment in time** (unlike the composite which is purely symbolic). This means it can be progressed and directed like a natal chart.

**Composite vs Davison:**
| | Composite | Davison |
|---|---|---|
| Nature | Symbolic blueprint | Real moment in space/time |
| Shows | Structure, public face | Inner tone, emotional experience |
| Best for | How relationship functions | How it feels and evolves |
| Timing | Transits | Transits + progressions + solar arcs |

### Step 5: Karmic Overlay

**Call**: `get_karmic_relationship_summary` or `calculate_synastry_chart` with `karmic_filter=true`

See the Karmic Astrology guide for full interpretation framework. Key indicators:
- Saturn-Node contacts between charts (karmic contracts)
- Pluto-South Node contacts (intense past-life patterns)
- Composite/Davison chart emphasizing 8th house (shared transformation)
- South Node contacts suggesting familiarity from past lives
- Saturn-heavy composites suggesting serious, destiny-laden relationships

### Step 6: Transit Timing

**Call**: `get_composite_transit_preview` or `get_davison_transit_preview`

Shows when relationship themes are activated by transits:
- **Saturn transits** to composite/Davison angles: Tests and restructuring
- **Jupiter transits**: Expansion and growth
- **Uranus transits**: Sudden changes, disruption
- **Pluto transits**: Deep transformation
- **Eclipses** hitting composite/Davison angles: Fateful turning points

### Step 7: Synthesis

Find **repeated themes** across synastry + composite + Davison. These recurring patterns are the core narrative of the relationship.

1. **Identify the core narrative** — What story do all three layers tell together?
2. **Note contradictions** — Where do the layers diverge? These are areas of complexity.
3. **Assess karmic weight** — How many karmic indicators are present? (Saturn, Pluto, Nodes)
4. **Determine relationship type** — Romantic, karmic, business, casual, fated?
5. **Identify growth edges** — What are the challenging aspects teaching?
6. **Check timing** — What transits are activating the relationship now or soon?

---

## Synastry Aspect Interpretation Quick Reference

### Venus-Mars (Chemistry)
| Aspect | Meaning |
|---|---|
| Conjunction | Intense, obvious physical and romantic attraction |
| Trine/Sextile | Desire and affection flow easily; compatible sexual needs |
| Opposition | Strong magnetism with push-pull dynamics |
| Square | Highly stimulating but prone to friction and fights |

### Moon-Venus (Emotional Warmth)
- Creates tenderness, caring, feeling emotionally "fed" by partner
- One of the best aspects for domestic comfort and feeling cherished
- Conjunction, trine, sextile = easy flow; hard aspects = needs clash

### Sun-Moon (Core Compatibility)
- Deep understanding at ego and emotional levels
- Conjunction/trine/sextile: natural "getting" of each other
- Opposition: complementary but different needs
- Square: intense attraction with emotional friction

### Saturn Aspects (Commitment and Karma)
- Conjunctions feel fated, dutiful, sometimes heavy
- Trines/sextiles provide stability and reliability
- Squares/oppositions bring tests, delays, pressure
- Not inherently bad — many long marriages have strong Saturn contacts

### Node Contacts (Fated Connections)
- Planets on North Node: destined connection, growth catalyst
- Planets on South Node: "known you forever" past-life feel
- Saturn on North Node: karmic teacher relationship
- Saturn square Nodes: karmic block, timing challenges

---

## House Overlays Interpretation

When Planet A falls in Planet B's house:
- **1st house**: Strongly visible, shapes self-image
- **4th house**: Emotional significance, feeling "at home"
- **7th house**: Partnership significance, embodies relating energy
- **8th house**: Intense psychological/sexual bond
- **10th house**: Public significance, affects career
- **12th house**: Hidden or spiritual connection, can be confusing

---

## Relationship Type Indicators

### Romantic / Sexual
- Venus-Mars aspects (synastry + composite)
- 5th and 8th house emphasis
- Moon contacts for emotional bonding
- Saturn contacts for commitment
- Pluto contacts for intensity

### Business / Professional
- Mercury contacts for communication
- 6th and 10th house emphasis
- Saturn contacts for structure
- Jupiter contacts for growth
- Uranus contacts for innovation

### Family Dynamics
- Moon contacts for emotional patterns
- 4th house emphasis
- Saturn contacts for duty/parental roles
- Node contacts for karmic family patterns

### Friendships
- Mercury contacts for intellectual connection
- 11th house emphasis
- Jupiter contacts for shared optimism
- Uranus contacts for unconventional bonds

---

## Common Mistakes

1. **Reading composite as a natal chart for one person** — The composite describes the relationship entity, not either person.
2. **Treating difficult aspects as relationship doom** — Hard aspects create friction that can strengthen the relationship.
3. **Reading composite in isolation** — Always use with synastry + natal charts.
4. **Ignoring house overlays** — They show which life areas are most activated by the relationship.
5. **Overemphasizing Venus-Mars** — Chemistry is important, but Sun-Moon and Saturn contacts determine long-term compatibility.