Model Context Protocol (MCP) server for freee API integration
Tools
calculate_psa_grading_roi
Calculate deterministic PSA / BGS / CGC card grading net profit, ROI %, expected value (EV), and break-even Gem Mint probability after 12.5% marketplace fees.
rawNearMintUsd number · required
Raw Near Mint (NM) ungraded card market price in USD
psa9MarketUsd number · required
PSA 9 Mint market price in USD
psa10MarketUsd number · required
PSA 10 Gem Mint market price in USD
condition string
Current ungraded card condition (default: NM)
gradingServiceFeeUsd number
Grading tier fee in USD (default: 25 for PSA Value Bulk)
A call is made on an account: it counts against an allowance and the publisher sees it, which is why this one asks who you are first.
96/100
tool-list score
8
tools declared
remote
via our gateway
—
p95 latency
What it does
Calculate PSA/BGS/CGC card grading ROI, 55/45 centering grades & Pokemon/Yu-Gi-Oh market values.
Quickstart
# 1 — sign in once: npx mcprush@latest login
# it asks for a key from mcprush.com/dashboard#access
# 2 — install
npx mcprush@latest add locatepic/cardworthscanner-tcg-price-centering-psa-grad-mcp
# 3 — ask your agent for something these tools do
# calculate_psa_grading_roi, calculate_card_centering_grade, lookup_tcg_card_market_price and 5 more
Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither.
CardWorthScanner — TCG Price, Centering & PSA Grading ROI costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publisher
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine — this server runs on the publisher’s own infrastructure behind our gateway, and what you install is the connection to it.
Claude Codedeclared by this listing
Claude Code has its own MCP command, and the key rides on it as a header — the gateway refuses a call that carries none. Claude Code reads MCPRUSH_KEY each time it connects, so the key stays out of its config: export your key from Access in your shell profile (macOS, Linux), or run setx MCPRUSH_KEY <your key> and open a new terminal (Windows). Or let npx mcprush@latest add locatepic/cardworthscanner-tcg-price-centering-psa-grad-mcp write the entry with the key for you; --scope user makes it available in every project.
claude mcp add --transport http --scope user cardworthscanner-tcg-price-centering-psa-grad-mcp https://mcprush.com/gw/cardworthscanner-tcg-price-centering-psa-grad-mcp/mcp --header 'Authorization: Bearer ${MCPRUSH_KEY}'Reconnect, or start a new session, and the tools appear in the model’s tool list.
Free to install on mcprush: no card. The gateway still answers a key, so you sign in once — which is also what gives you saved lists, release alerts and a budget cap.
What it writes
One config entry pointing at the gateway. The server itself runs on the publisher’s own infrastructure, so nothing from this listing executes on your machine.
What you approve
8 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Calculate deterministic PSA / BGS / CGC card grading net profit, ROI %, expected value (EV), and break-even Gem Mint probability after 12.5% marketplace fees.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rawNearMintUsd | number | yes | Raw Near Mint (NM) ungraded card market price in USD |
| psa9MarketUsd | number | yes | PSA 9 Mint market price in USD |
| psa10MarketUsd | number | yes | PSA 10 Gem Mint market price in USD |
| condition | string | no | Current ungraded card condition (default: NM) |
| gradingServiceFeeUsd | number | no | Grading tier fee in USD (default: 25 for PSA Value Bulk) |
Calculate trading card border centering ratios (Left/Right and Top/Bottom in mm or px) and determine maximum eligible grades across PSA (55/45), BGS (Black Label 50/50), CGC, and TAG.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| leftMm | number | yes | Left border width in mm or pixels (e.g. 2.4) |
| rightMm | number | yes | Right border width in mm or pixels (e.g. 2.6) |
| topMm | number | yes | Top border width in mm or pixels (e.g. 2.5) |
| bottomMm | number | yes | Bottom border width in mm or pixels (e.g. 2.5) |
Look up raw TCGplayer USD, Cardmarket EUR, PSA 9, PSA 10, and BGS 9.5 graded prices for Pokemon, Yu-Gi-Oh!, and Sports cards by name or card number (e.g. "Charizard", "4/102", "Umbreon", "Blue-Eyes White Dragon").
| Parameter | Type | Required | Notes |
|---|---|---|---|
| query | string | yes | Card name, character, set name, or printed number (e.g. "Charizard 4/102", "Moonbreon", "LOB-001") |
| limit | number | no | Maximum number of matching cards to return (1 to 10, default 5) |
Look up exact front/back centering tolerances, corner sharpness, edge whitening, and surface rules for PSA 10 Gem Mint, BGS 10 Black Label, CGC 10 Pristine, and TAG 1000.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| company | string | yes | Grading authority (PSA, BGS, CGC, TAG, or ALL) |
Identify 1999 Wizards of the Coast Pokemon Base Set print runs (1st Edition Thick/Thin Stamp, Shadowless Red Cheeks/Yellow Cheeks, Unlimited, 1999-2000 4th Print UK) from visual border and copyright cues.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hasFirstEditionStamp | boolean | yes | Whether the left middle border has the black Edition 1 stamp |
| hasRightFrameDropShadow | boolean | yes | Whether the right side of the artwork box casts a dark shadow |
| copyrightYearText | string | no | Bottom copyright text (e.g. "1995, 96, 98, 99" or "1999-2000") |
Compare submission fees, maximum declared value caps, and estimated turnaround business days across PSA, Beckett (BGS), and CGC based on post-grading card value.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| estimatedGradedValueUsd | number | yes | Estimated post-grading value of the card in USD (e.g. 180, 600, 2500) |
Calculate net seller take-home payout after platform final value fees (eBay 13.25%, TCGplayer Pro/Level 4, Goldin/PWCC vault) and shipping insurance.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| salePriceUsd | number | yes | Gross card sale price in USD (e.g. 250) |
| platform | string | yes | Selling marketplace |
Look up exact card dimensions in mm/inches and required submission holder specs (Card Saver 1 semi-rigid vs 35pt/55pt/130pt toploader) for Standard (Pokemon/MTG/Sports) vs Japanese (Yu-Gi-Oh!) cards.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cardGame | string | yes | Trading card game or card stock thickness type |
Free
$0 forever
- Every tool, no call limit, and mcprush charges nothing
- A buyer key from your dashboard — the gateway refuses a call without one
- Answers through our gateway, so every call is in your log
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install CardWorthScanner — TCG Price, Centering & PSA Grading ROI or to call it, and its free tier carries no monthly call limit.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATool-list grade · score 96 / 100
Release 1.0.2 · scanned 11 Nov 2026
Graded from the tools this server lists, not from its source code.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score96
Findings0 threat · 0 capability
Capabilityminimal
Coveragemanifest
Verificationnot in this report
Surface digest84a9cd4fbd892c9540a40ab7128c7209451568a9685b6dc1a631a3db24d16463
Score vectorthreat 100 → client 96
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | minimal | capability blast radius (minimal) — client exposure if the model is manipulated | −0 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
Tool surfaceread
Implementation sourcenot available
Package metadatanot available
Live transportnot available
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. minimal is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| calculate_psa_grading_roi | no tags | |
| calculate_card_centering_grade | no tags | |
| lookup_tcg_card_market_price | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digest84a9cd4fbd892c95
Scanned2026-11-11
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
The gateway serves every install the publisher’s current release, so a release cannot be pinned or rolled back to here yet. The history below is for reading; the current release on file is 1.0.2.
1.0.2
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish CardWorthScanner — TCG Price, Centering & PSA Grading ROI can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.