Health check — returns 'pong'.

Search for Magic cards using Scryfall syntax.

Examples: "f:commander id:sultai t:creature", "o:destroy t:instant cmc<=3" See https://scryfall.com/docs/syntax for full syntax reference.

Get full details for a Magic card by exact or fuzzy name.

Get current prices for a Magic card. Prices update once per day.

Get official rulings and clarifications for a Magic card.

Get metadata for a Magic set by its code.

Find recently printed or released Magic cards.

Searches Scryfall for cards released within the given number of days. Optionally filter by set or format legality.

Search for known combos involving a specific card.

Optionally filter by color identity (e.g. "sultai", "BUG", "wubrg"). Returns up to limit combos with cards involved and results produced.

Get detailed steps for a specific combo by its Spellbook ID.

Use an ID from find_combos results (e.g. "1414-2730-5131-5256").

Find combos present in (or nearly present in) a Commander decklist.

Provide commander name(s) and a list of card names in the main deck. Returns combos that are fully included and those that are almost included.

Estimate the Commander bracket (power level) for a decklist.

Provide commander name(s) and a list of card names in the main deck. Returns bracket tag and any bracket-relevant findings.

Get win rate and draft performance data for cards in a set.

Key metrics: GIH WR (ever_drawn_win_rate), ALSA (avg_seen), OH WR (opening_hand_win_rate), IWD (drawn_improvement_win_rate).

Note: 17Lands data skews toward above-average players (~56% baseline WR). Cards with <500 games may not have reliable data.

Get win rates by color pair/archetype for a draft set.

Note: start_date and end_date are required by the 17Lands API.

Get the most-played cards for a commander with synergy scores and inclusion rates.

Shows which cards are most commonly played with this commander and how synergistic they are (vs. generic popularity).

Get synergy data for a specific card with a specific commander.

Shows how synergistic the card is with the commander compared to its general popularity, plus how many decks include it.

Fetch a full decklist from Moxfield by deck ID or URL.

Returns the complete decklist organized by board (commanders, mainboard, sideboard, companions) with card names and quantities.

Get metadata for a Moxfield deck (name, format, author, dates).

Returns deck metadata without the full card list. Use decklist for the complete card list.

Search public Moxfield decks by format, keyword, or sort order.

Returns a paginated list of deck summaries with name, format, author, colors, and card counts.

List a user's public decks on Moxfield.

Verifies the user exists, then searches for their public decks. Optionally filter by format.

Look up a Magic card by exact name using Scryfall bulk data.

Returns full card details including mana cost, type, oracle text, colors, power/toughness, prices, legalities, and EDHREC rank. Case-insensitive.

Search for Magic cards in Scryfall bulk data.

Batch legality check for cards in a specific format.

Returns a markdown table showing the legality status of each card in the specified format. Handles common format aliases (e.g. 'edh' for 'commander').

Search for legal cards in a specific format using natural language.

Combines format legality filtering with name/type/text search and optional color identity, price, and rarity constraints. Results are sorted by EDHREC rank (most popular first).

Find the most popular (staple) cards legal in a format.

Ranking adapts to the format: singleton formats (Commander, Brawl, Oathbreaker) use EDHREC rank; competitive formats use MTGGoldfish tournament frequency when available, falling back to a mana-efficiency heuristic.

Find cards similar to a given card.

Scores similarity based on shared keywords, type words, CMC proximity, and oracle text overlap. Optionally filter by format legality and price.

Get a random Magic card, optionally filtered by format, color, type, and rarity.

Returns full card details in the same format as card_lookup.

Get the banned and restricted cards for a format.

Returns alphabetically sorted lists of banned and restricted cards, including their type lines.

Show a card's legality across all Magic formats.

Returns a table with the card's legality status in each format, ordered with the most common formats first.

List recent tournaments for a format with dates, player counts, and IDs.

Use the tournament ID from the results with tournament_results to see full standings and decklists.

Get full standings and decklists for a specific tournament.

Look up a tournament by its Spicerack ID. Use recent_tournaments first to find tournament IDs.

Find top-performing decklists across recent tournaments for a format.

Collects top-4 finishers with Moxfield decklists from recent events. Use moxfield_decklist to fetch the full card list for a deck.

Get the current metagame breakdown for a competitive format.

Shows top archetypes with meta share percentages, deck counts, and estimated paper prices.

Get a sample decklist for an archetype in a format.

Returns deck metadata (author, event, result, date) and the full mainboard and sideboard card list.

Get the most-played cards in a format with deck inclusion percentages.

Shows which cards appear most frequently across all archetypes in the format, with average copies played per deck.

Get the estimated paper price for an archetype deck.

Returns the total estimated cost of the deck based on current card prices from MTGGoldfish.

Comprehensive commander profile combining data from all available sources.

Returns card details, top combos, EDHREC staples, and synergy scores. Degrades gracefully if optional sources (EDHREC, Spellbook) are unavailable.

Assess whether a card is worth adding to a specific commander deck.

Returns card details, price, synergy score, and combos enabled for the caller to assess. Degrades gracefully if optional sources (EDHREC, Spellbook) are unavailable.

Rank cards in a draft pack using 17Lands win rate data.

Provides GIH WR, ALSA, IWD stats, and color fit analysis based on current picks. Requires 17Lands to be enabled.

Identify the weakest cards to cut from a commander decklist.

Scores cards by synergy, inclusion rate, and combo membership. Degrades gracefully if EDHREC or Spellbook backends fail (uses whatever data is available).

Compare 2-5 cards side-by-side for a specific commander deck.

Shows mana cost, type, synergy, inclusion rate, combo count, and price for each card. Scryfall and Spellbook required; EDHREC optional.

Suggest budget-friendly upgrades for a commander deck.

Ranks EDHREC staples by synergy-per-dollar within the given budget ceiling. Requires EDHREC (for staples) and Scryfall (for prices).

Full decklist health check — mana curve, colors, combos, bracket, budget, synergy.

Uses all available backends: Scryfall bulk data for rate-limit-free card resolution, Scryfall API as fallback, Spellbook for combos and bracket estimation, EDHREC for synergy scores. Degrades gracefully if optional backends are unavailable.

Pass declared_categories for any count the deck's owner asserted: it is measured against the list and reported as drift. A number stated once and never re-checked is how a deck ends up evaluated against a composition it no longer has.

Map the mechanics a deck SHARES — keyword carriers, tribal counts, trigger reach.

Every other tool here is indexed by card. This one is indexed by mechanic, and answers what per-card data cannot:

• how many cards carry the commander's keyword (a deck with 15 carriers is not a loop toward one card, it is 15 destinations);

• what a cost reducer ACTUALLY reduces, counted rather than assumed (rule 601.2f: a generic reduction never touches coloured pips);

• who really has the tribal type, including changelings — every creature type by rule 702.73a, and invisible to a type-line search;

• which triggers multiply per attacking creature versus firing once per combat.

Run this before writing any description of how a deck works.

Apply a cost reducer to costs mechanically, and say what it does NOT reduce.

Rule 601.2f: a generic cost reduction reduces the generic component only. Coloured pips, {C}, hybrids and {X} survive it — two reducers do not take {U}{B} to {0}. Use this instead of doing the arithmetic in prose; the prose version has been wrong in both directions on the same card.

Draft format overview — top commons/uncommons and trap rares.

Uses 17Lands card ratings to provide a data-driven format breakdown. Requires 17Lands to be enabled.

Find cards matching a theme — mechanical, tribal, or abstract/flavorful.

Maps themes to oracle text patterns and searches bulk data. Groups results by relevance tier (strong match, moderate match, flavor match).

Find synergistic cards for 1-5 build-around cards in any format.

Analyzes oracle text for key mechanics, searches for synergies, and checks combo potential. Groups results by role (enablers, payoffs, support).

Identify gaps in a partial decklist and suggest cards to fill them.

Analyzes mana curve, card roles, and format-specific ratios, then suggests cards for underrepresented categories.

Compare 2-5 commanders head-to-head: stats, combos, staples, popularity.

Side-by-side comparison table with mana cost, color identity, EDHREC rank, combo count, and shared/unique staples.

Best cards for a creature type — lords, synergy pieces, and top members.

Groups results by: lords/anthems, tribal synergy, best members, tribal support.

Analyze and upgrade a Commander precon — identify weakest cards, suggest replacements.

Pairs each upgrade with a specific cut, explaining the synergy improvement.

Top cards across ALL commanders in a color identity.

Uses EDHREC aggregated data when available, falls back to EDHREC rank from bulk data.

Build 1-3 decks from a sealed pool using card quality and color pair analysis.

Evaluates each 2-color pair, selects best cards, and suggests land splits. Uses 17Lands data when available for card quality scoring.

Analyze draft picks and recommend a direction based on color signals.

Uses ALSA data to detect which colors are open (cards seen later than expected = open).

Review a completed draft — pick-by-pick GIH WR analysis and key decision points.

Identifies where you could have taken a higher-WR card, pivot points, and overall draft grade.

Check Standard rotation status and identify which cards are rotating.

Shows sets currently in Standard with rotation dates. If cards provided, identifies which are in rotating sets and suggests replacements.

Get the current metagame breakdown for a competitive format.

Shows top archetypes with meta share %, tier classification, and prices. Uses MTGGoldfish as primary source with Spicerack tournament data as fallback.

Get the stock decklist for a competitive archetype.

Returns a full decklist (mainboard + sideboard) with deck metadata and total price when available. Archetype name is fuzzy-matched.

Compare 2-4 competitive archetypes side-by-side.

Shows price, colors, key cards, shared staples, and differences.

Get a beginner-oriented guide for entering a competitive format.

Shows archetypes sorted by budget accessibility, cross-archetype staples (buy once, play everywhere), and format rules summary.

Suggest a 15-card sideboard for a competitive deck.

Analyzes the main deck's weaknesses and recommends sideboard cards with per-card reasoning. Works with heuristic analysis alone; enhanced with MTGGoldfish frequency data when available.

Get a specific sideboard in/out plan for a named matchup.

Given a full 75 and a matchup archetype, produces specific boarding instructions with reasoning.

Generate a sideboard matrix for a deck across common matchups.

Matrix shows which sideboard cards come IN/OUT/FLEX for each matchup. Auto-detects top matchups from metagame data or uses provided matchup list.

Validate a decklist against a format's construction rules.

Checks legality, deck size, copy limits, color identity (Commander), singleton rules, and Pauper rarity. Returns VALID or INVALID with actionable error messages.

Full mechanical audit battery in ONE call — validation, analysis, combos, bracket, commander rulings, v3 simulation.

Runs the six sections concurrently and returns one report where every section carries an explicit ok/error status and echoes the parameters it used. A failed section NEVER fails the whole bundle: it is reported as ok: false with its error, next to the sections that succeeded. Simulation is forced to v3 (commander_colors + tutor_aware=True). The rulings section ships the commander's official rulings and oracle text with the audit: confront each ruling with your own claims — fetching them is not reading them.

Suggest a mana base for a decklist based on color pip distribution.

Analyzes color requirements, recommends land count, and suggests format-legal dual lands. Handles hybrid and phyrexian mana.

Compute the exact hypergeometric probability of seeing a card category.

Answers questions like "what are the odds I've seen at least 1 of my 3 tutors by turn 4?" via the closed-form hypergeometric distribution.

Pass decklist + category_filter to have the count MEASURED rather than stated. A probability computed from a number nobody re-checked is the failure this guards against: a category declared at 13 that had quietly become 11 moved the headline statistic by 6.5 points, unnoticed across every revision.

Monte Carlo simulation of opening hands, mulligans, and early mana curve.

Simulates Commander-free-mulligan opening hands and a greedy 5-turn goldfish to estimate keep rates, kept-hand land distribution, and spendable mana per turn. Exclude the commander from decklist: it simulates a 99-card Commander library.

Compare prices across multiple cards using Scryfall bulk data.

Returns a markdown table with USD, USD foil, and EUR prices sorted by USD descending.

Look up MTG Comprehensive Rules by number or keyword search.

Returns matching rules with full text, parent context, and subrules.

Explain an MTG keyword with rules text, examples, and interactions.

Returns the rules definition, reminder text, and up to 5 example cards from bulk data.

Explain how two mechanics or cards interact under MTG rules.

Returns relevant rules, step-by-step resolution, and common misconceptions.

Resolve a game scenario step-by-step using MTG rules.

Covers priority, stack resolution, state-based actions, and triggers with rule citations.

Calculate combat step-by-step with keyword interactions.

Resolves declare attackers → declare blockers → damage steps → state-based actions. Looks up card keywords from bulk data if card names are provided.