TypeScript/JavaScript client for the Pkmn Prices API. Pokemon TCG card pricing from TCGPlayer, Cardmarket, and eBay.
No dependencies. Uses the built-in fetch, so it runs on Node 18+, browsers, Deno, Bun, and Workers. Ships ESM and CommonJS with types.
npm install @pkmnprices/sdkimport { PkmnPrices } from "@pkmnprices/sdk";
const client = new PkmnPrices({ apiKey: "pk_your_key_here" });
const { data } = await client.cards.list({ name: "charizard", per_page: 10 });
const card = await client.cards.get(data[0].id);
for (const price of card.prices) {
const symbol = price.currency === "EUR" ? "€" : "$";
console.log(`${price.source}: ${symbol}${price.market_price}`);
}Grab an API key from https://pkmnprices.com/dashboard.
new PkmnPrices({
apiKey: "pk_...", // sent as the x-api-key header
maxRetries: 2, // retries on 429 rate limits and 5xx/network errors
timeoutMs: 30_000, // per-request timeout
});Rate-limit 429s are retried with backoff. Credit-limit 429s (credit_limit_exceeded) are not, since they don't reset until the next day.
List endpoints return { data, pagination }. Listing endpoints (eBay, Cardmarket, and TCGplayer) use cursors instead. Both have iterator helpers if you'd rather not track pages or cursors yourself:
for await (const card of client.cards.iterate({ name: "charizard" })) {
console.log(card.name);
}
const allSets = await client.sets.listAll({ language: "english" });
for await (const sale of client.cards.listings.iterateEbay(789, { graded: true, grader: "PSA", grade: "10" })) {
console.log(sale.title, sale.price);
}
for await (const offer of client.cards.listings.iterateCardmarket(789, { condition: "Near Mint", variant: "Reverse Holo" })) {
console.log(offer.seller, offer.price, offer.language);
}
for await (const offer of client.cards.listings.iterateTcgplayer(789, { condition: "Near Mint" })) {
console.log(offer.seller_name, offer.price, offer.shipping_price);
}Sealed products carry the same three listing sources, under client.sealed.listings:
for await (const offer of client.sealed.listings.iterateTcgplayer(5678)) {
console.log(offer.seller_name, offer.price, offer.quantity);
}
for await (const offer of client.sealed.listings.iterateCardmarket(5678)) {
console.log(offer.seller, offer.price, offer.opened);
}
for await (const sale of client.sealed.listings.iterateEbay(5678, { sort: "price_desc" })) {
console.log(sale.title, sale.price, sale.sold_at);
}Sealed Cardmarket offers take no variant: every sealed row is written with an
empty one, so the filter could only ever exclude everything. They are also
single-language — the offers returned are the ones in the set's own language, so
a Cardmarket product page showing offers in other languages lists more than this
endpoint does.
Sealed TCGplayer offers are normally condition "Unopened" with an empty
printing, so those two filters rarely narrow anything. Sealed eBay sales are
never graded, so graded, grader, and grade aren't accepted there and
grader/grade come back null.
A variant and its base card can map to one source product page. When that happens, both serve the same sales, and the titles describe whichever printing the seller actually sold. Every eBay comp says which case it is:
for await (const sale of client.cards.listings.iterateEbay(17679)) {
if (sale.attribution === "shared") continue; // another card's evidence
console.log(sale.variant, sale.title, sale.price);
}exact means the source page belongs to this card alone. shared means the
sale appears under at least one other card too, so it prices the group rather
than this entity. unknown means the comp was collected before the source
printing was recorded. A feed that is entirely shared is not evidence about
the card you asked for.
variant also works as a filter, so a card mapped for more than one printing
can be read one printing at a time:
const holo = await client.cards.listings.allEbay(789, { variant: "Holofoil" });Credits are charged per row returned, so re-reading a page of comps you already
hold to find out that nothing changed is the expensive way to stay current.
since returns only what arrived after a point you name:
let checkpoint = "2026-09-01T02:40:15.126147Z";
const page = await client.cards.listings.ebay(789, { since: checkpoint });
for (const sale of page.data) console.log(sale.title, sale.price);
if (page.data.length) checkpoint = page.data[0].ingested_at;Checkpoint on ingested_at, not sold_at. They are different: sold_at is
when the sale happened, ingested_at is when we collected it, and a collection
run regularly brings in sales that are weeks old. A sale-date bound would step
over those permanently.
The bound is exclusive, so passing back the ingested_at you were given never
repeats that row. ingested_at ends in Z rather than +00:00 so it survives
a query string without escaping. since also accepts a bare YYYY-MM-DD
(midnight UTC), which suits a backfill more than a poll: re-running it the same
day returns the same rows, and pays for them again.
A card with nothing new returns an empty data array.
updated_at on a TCGplayer offer is not a freshness signal. It moves only when
that listing's own price, quantity or seller details change, so an offer that
has been live and unchanged for a month keeps a month-old updated_at however
recently it was confirmed.
snapshot_at is the freshness field: when that product's listings were last
confirmed against TCGplayer. It is the same for every row in a response, since
a snapshot replaces a product's listings wholesale. Listings refresh daily, so
a snapshot_at well over a day old means that product's last fetch did not
succeed and you are looking at the previous snapshot.
One thing snapshot_at cannot tell you: listings are collected from a US
vantage point with no shipping-destination filter, so a response can contain
offers TCGplayer's own site hides from you when you browse it from elsewhere.
Cardmarket sells more than one kind of good under a single card. Every Cardmarket offer carries four booleans, and they are always present:
for await (const offer of client.cards.listings.iterateCardmarket(789)) {
if (offer.graded) console.log(offer.grader, offer.grade); // "PSA", "10"
if (offer.signed || offer.altered) continue; // not a clean card
}A signed, altered, graded or opened offer is real, and it is returned,
but it does not contribute to the market price. A signed and altered Near
Mint copy at EUR 200 must not set the Near Mint price of a card whose clean
copies sell for EUR 3,800, and a slab is priced for the slab rather than for the
card.
The practical consequence: the cheapest row you get back is not necessarily
the market_price. Filter these out before deriving a price yourself.
grader and grade are named to match the graded eBay sale shape, so "PSA 10"
renders the same way whichever source it came from. Both are null unless
graded is true, and can be null even then — Cardmarket flags a slab without
always naming the grader, and the details are read from free-text seller
comments.
opened is the sealed-product member of the set: the seller's own comment says
the item is not sealed. It is always false on a card. A Jungle booster pack
whose every other offer sits between EUR 799 and EUR 950 carries one at
EUR 10.00 reading "Not Sealed (open, just the booster)" — a real price for an
opened pack, not a EUR 10 Jungle booster pack.
The other reason the cheapest row may not be the price. sell_count is the
seller's completed sales, and an offer from a seller with no completed sales
does not set a price.
for await (const offer of client.sealed.listings.iterateCardmarket(1430)) {
if (offer.opened) continue; // not the sealed product
if (offer.sell_count === 0) continue; // no completed sales; sets no price
// offer.sell_count === null means no count was recorded — not zero sales
}null is not zero. null means no count was recorded for that row; 0
means Cardmarket reports the seller as having sold nothing. Treat only 0 as
disqualifying.
A card's language comes from its set, and it decides what pricing that card can ever have.
| Language | Cards | Pricing | Plan |
|---|---|---|---|
| English | 28,158 | USD (TCGplayer, eBay) + EUR (Cardmarket) | Free |
| Japanese | 29,660 | USD + EUR | Pro+ |
| German | 13,078 | EUR (Cardmarket) only | Pro+ |
const german = await client.cards.list({ language: "German", currency: "eur" });Spelling is normalised: "German", "german", "de" and "DE" all resolve to
the same thing, and responses come back in the canonical form ("German").
German cards have no USD price and never will — TCGplayer does not sell
German product. Asking for German with currency: "usd" returns an empty list
rather than an error, so reach for "eur".
The same rule scopes Cardmarket listings. cardmarket() returns offers in the
card's set language only, so an English card never returns German offers.
cardmarket.com shows every language on one product page, so the cheapest offer
here is usually higher than the "From" price a browser shows you. That is this
feed being narrower, not a different product.
A free key is limited to English. Asking for Japanese or German throws a
ForbiddenError, and omitting language returns English only rather than the
whole catalogue.
German coverage runs from HeartGold & SoulSilver (2010) to current sets.
Every price has a currency field. Pass currency ("usd" or "eur") to filter, or leave it off to get everything your plan allows. EUR (Cardmarket) prices need a Pro plan; a free key asking for eur gets a ForbiddenError.
const card = await client.cards.get(789, { currency: "usd" });
const box = await client.sealed.get(5678, { currency: "eur" });Cardmarket current prices are condition- and printing-specific marketplace
prices. Each EUR row has one market_price for its exact condition and
variant; for example, a Near Mint Reverse Holofoil price is distinct from a
Mint or Normal price. The retired Price Guide low, trend, and avg fields
are not returned. Live Cardmarket listings are automatically restricted to the
card's language.
Card and sealed detail responses expose Cardmarket's stable product identifiers when a mapping is available:
const card = await client.cards.get(789);
console.log(card.cardmarket_url);
console.log(card.cardmarket_product_id);
const box = await client.sealed.get(5678);
console.log(box.cardmarket_url);
console.log(box.cardmarket_product_id);Both fields are null until the product has been mapped.
client.health()
client.sets list get iterate listAll
client.cards list get iterate listAll priceHistory iteratePriceHistory
client.cards.listings ebay iterateEbay allEbay cardmarket iterateCardmarket allCardmarket tcgplayer iterateTcgplayer allTcgplayer
client.sealed list get iterate listAll priceHistory iteratePriceHistory
client.sealed.listings ebay iterateEbay allEbay cardmarket iterateCardmarket allCardmarket tcgplayer iterateTcgplayer allTcgplayer
Everything thrown extends PkmnPricesError, which carries status, code, message, rateLimit, and retryAfterMs.
import { ForbiddenError, NotFoundError, RateLimitError } from "@pkmnprices/sdk";
try {
await client.cards.get(789, { currency: "eur" });
} catch (err) {
if (err instanceof ForbiddenError) {
// needs a higher plan
} else if (err instanceof NotFoundError) {
// no such card
} else if (err instanceof RateLimitError) {
// ran out of retries
}
}Subclasses: BadRequestError (400), UnauthorizedError (401), ForbiddenError (403), NotFoundError (404), ConflictError (409), CreditLimitError and RateLimitError (429), InternalServerError (5xx), ConnectionError (network/timeout).
MIT