Photo Composition

Rule of thirds, leading lines, symmetry — plus exact computed grid coordinates

Unify Dynamics LLC

Documentation

Tools9read-only

Sign-inNoneno account, no key

Data keptNoneprocessed in memory

PriceFreeoptional Pro limits

StatusLiveMCP + REST

Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

Explain the rule of thirds

Tools called

rule_info

What composition rules do you cover?

Tools called

rule_list

What composition rule fits a scene with a long road disappearing into the distance?

Tools called

rule_for_scenario

Give me the thirds-grid coordinates for a 16:9 photo with the subject in the top-left third

Tools called

thirds_grid_coordinates

What types of leading lines are there?

Tools called

leading_lines_types

What types of symmetry are there in photography?

Tools called

symmetry_types

How do I use negative space well?

Tools called

negative_space_tips

How do I frame a shot using a doorway?

Tools called

framing_techniques

What's look room?

Tools called

composition_glossary

About

Compomap is a fully local, hand-curated photo composition reference. rule_info explains one of ten composition principles in full — description, when to use it, common mistakes; rule_list shows all ten. rule_for_scenario suggests 1-3 relevant rules for a described scene. thirds_grid_coordinates is real computed geometry: give an aspect ratio, optionally a canvas size in pixels, a subject-position category, and a grid type (rule-of-thirds at exact 1/3 and 2/3 lines, or the golden-ratio 'phi grid' at 1/phi and 1-1/phi, phi = 1.6180339887...), and it returns the exact grid-line coordinates, all four intersection 'power points', and a recommended subject x/y position. leading_lines_types, symmetry_types, negative_space_tips and framing_techniques are focused deep-dive references. composition_glossary defines vanishing point, foreground/midground/background, headroom, look room, rule of odds, power points, visual weight and depth of field. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Hand-curated from well-established, widely taught general photography/visual-arts composition principles, plus real computed geometry (exact thirds and golden-ratio/phi-grid math) for the grid-coordinates tool; fully local, zero upstream calls

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.

What it can do

9 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI

Rules3 tools

Rule infoFull explanation of one composition principle: description, when to use it, and common mistakes.
Rule listAll ten composition rules with a one-line description.
Rule for scenarioSuggests 1-3 relevant composition rules for a described scene, keyword-matched against each rule's description and when-to-use guidance.

Grid Math1 tools

Thirds grid coordinatesReal computed geometry: returns the exact rule-of-thirds or golden-ratio grid-line coordinates and the four intersection ('power point')…

Deep Dives4 tools

Leading lines typesThe four categories of leading lines: converging, diagonal, curved/S-curve, and implied lines.
Symmetry typesThe four categories of symmetry in composition: vertical, horizontal, radial, and broken symmetry.
Negative space tipsTips for using negative space effectively: simplicity, off-center placement, look room, mood, and aspect ratio considerations.
Framing techniquesTechniques for using foreground framing: architectural vs organic frames, partial frames, and depth cues.

Reference1 tools

Composition glossaryDefines composition terms: vanishing point, foreground/midground/background, headroom, look room, rule of odds, power points, visual weight, depth…

Information

PublisherUnify Dynamics LLC

CategoryDesign & creative · Reference

LanguagesEnglish

Built forGlobal

CompatibilityAny MCP client · any agent · REST

Version0.1.0

MCP endpointhttps://compomap.connectorbay.com/mcp

REST APIopenapi.json

SupportGet help · Status

CountryWorldwide

Documentation

What Compomap is for

"When should I use the rule of thirds vs leading lines?", "where exactly do the thirds-grid lines fall on a 16:9 photo?", "what composition rule fits a scene with a long road?" — a practical composition reference that pairs hand-curated guidance with real computed grid geometry, not just a description of where things "roughly" go.

What it does

rule_info explains one of ten composition principles in full — rule of thirds, leading lines, framing, symmetry, negative space, golden ratio, fill the frame, diagonal lines and the rule of odds, patterns and repetition, and color/tonal contrast — with a description, when to use it, and common mistakes; rule_list shows all ten at a glance. rule_for_scenario suggests 1-3 relevant rules for a plain-language description of a scene or goal.

thirds_grid_coordinates is the connector's core computed tool: give an aspect ratio (16:9, 4:3, 1:1, 9:16, or a raw WIDTHxHEIGHT), optionally an exact canvas size in pixels, a subject-position category (top_left, top_right, bottom_left, bottom_right, top_third, bottom_third, left_third, right_third, center), and a grid type — and it returns the exact vertical/horizontal grid-line coordinates, all four intersection "power points," and a recommended subject x/y position. The rule-of-thirds grid sits at exactly 1/3 and 2/3 of the frame; the golden-ratio ("phi grid") variant sits at 1/φ and 1 − 1/φ (φ ≈ 1.6180339887), the standard construction used across photography and design — both are real, checkable arithmetic on the aspect ratio and canvas size you give it.

leading_lines_types, symmetry_types, negative_space_tips and framing_techniques are focused deep-dive references for those four rules specifically. composition_glossary defines the surrounding vocabulary — vanishing point, foreground/midground/background, headroom, look room, rule of odds, power points, visual weight, depth of field.

What it is not

Not a substitute for looking at the actual scene in front of you. Composition "rules" here are well-established general guidelines used across photography and visual arts, not laws — plenty of excellent photos break every one of them on purpose. The grid-coordinate math is exact for the aspect ratio and canvas size you provide, but where a subject actually belongs in any specific photo is always a judgment call informed by the scene, not something a formula can decide for you.

Privacy policy

Compomap — Privacy Policy

Effective 24 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Compomap is. Compomap is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a hand-curated photo composition reference and a computed grid-coordinate calculator. You interact with your assistant; the assistant sends us only the arguments needed for that one lookup or computation.

What we receive. The arguments of each tool call — a composition rule name, a described scene, or an aspect ratio/canvas size/subject position for the grid calculator — the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Everything is answered from bundled, hand-curated reference data or computed locally, and nothing is stored. No request is forwarded to any third party — there is no upstream call at all, live or otherwise — and no query is logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant or your name, and we do not build a profile from your queries: each request is answered independently and nothing carries over between requests. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — the entire reference is bundled with the server and every computation runs locally. Hosting: Vercel (United States regions).

Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.

Children. Compomap is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

Compomap — Terms of Service

Effective 24 September 2026. These terms govern use of the Compomap connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

The Service. Compomap returns a hand-curated, fully local photo composition reference (ten principles with when-to-use guidance) plus a computed thirds-grid/golden-ratio-grid coordinate calculator. It is accessed through an AI assistant or directly over MCP or HTTP.
Guidance, not a rule. Composition principles described by the Service are widely taught general guidelines, not universal rules — they don't guarantee a particular photo will look good, and plenty of strong photography intentionally breaks them.
Computed geometry. Grid-coordinate results are exact arithmetic on the aspect ratio and canvas size you provide. They do not analyze any actual image or know anything about your specific scene or subject.
Acceptable use. Automated use within the published rate limits is welcome.
Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
Data. Our Privacy Policy describes what we process. In short: your query is answered from bundled reference data or computed locally, and nothing is stored.
Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss or damage arising from use of, or reliance on, the Service. Our total liability is limited to US $100.
Governing law. California law; venue in San Mateo County, California.
Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/compomap

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