Attic
REMOTE · MCP.ATTICCAPITAL.COM · 2 COMPONENTS
Weekly Attic Capital reports for coins, cards, cars, and art.
Available components
Last scanned (15 hours ago)
Scores higher than 55% of remote servers
Reachable. Last reached 24 Oct 2026.
Category Entertainment and Games
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability62
- 36% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Partial
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 2430 tokens (~63/item across 38 items; 18 tools + 20 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 18 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 20 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 20 Oct 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 24 Oct 2026 · Probed https://mcp.atticcapital.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=atticcapital.com | CN=WE1,O=Google Trust Services,C=US | 20 Oct 2026 | 18 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | bce174bbd05019f01399be85bbfaf442 |
| SANs: atticcapital.com, mcp.atticcapital.com, *.mcp.atticcapital.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.atticcapital.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| atticcapital.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.atticcapital.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.atticcapital.com/mcp | Inconclusive | 406 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
attic_card_sold_comps Card sold comps (stub) ~124
STUB. Does not return eBay sold prices for sports cards. Do not call this to price a card, and do not invent a hammer or a sold comp. Requires an Attic API key. PCGS is unrelated and is not offered.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Defaults to the card route. |
| days | integer | – | Lookback in days. Default 30. |
| limit | integer | – | Default 10, max 25. |
| q | string | yes | Card keywords. No sold prices are returned while this route is a stub. |
No output schema declared.
No examples provided.
attic_coin_sold_comps Coin sold comps (stub) ~116
STUB. Does not return sold prices for coins. Do not call this to price a coin, and do not invent a hammer. Requires an Attic API key. PCGS comps are not offered.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Defaults to coins on this route. |
| days | integer | – | Lookback in days. Default 30. |
| limit | integer | – | Default 10, max 25. |
| q | string | yes | Coin keywords. No sold prices are returned while this route is a stub. |
No output schema declared.
No examples provided.
attic_comps_status Comps adapter status ~53
Whether PSA cert lookup and the eBay-sold bridge are configured or live. No upstream price call. PCGS comps are not offered. If live is false, do not quote sold prices or grades. Public.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
attic_get_article Get an Attic article ~77
Get one atticcapital.com article by WordPress slug: title, date, excerpt, markets, dossier slugs, and episode numbers. The excerpt is a summary of at most 400 characters. Do not fetch the article HTML.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | Article slug, such as nolan-ryan. From attic_list_articles. |
No output schema declared.
No examples provided.
attic_get_changes What changed this week ~144
Ledger of roster and gathering moves since the prior weekly cut. Use this for 'what changed', rank moves, names that entered or left a top 5. Optional since (YYYY-MM-DD), market, and layer. layer=beyond is Attic Beyond. An empty list means the rosters did not move.
| Name | Type | Req | Description |
|---|---|---|---|
| layer | string | – | headlines is public. beyond is Attic Beyond. |
| market | string | – | Market: rare-coins, sports-cards, collector-cars, or art. Names such as Rare Coins or fine art are accepted. |
| since | string | – | Optional prior date, YYYY-MM-DD. Omit for the retained previous cut. |
No output schema declared.
No examples provided.
attic_get_dossier Get an object dossier ~130
Get an Attic object dossier by market and slug: thesis, risk flags, related Creators episodes, and outbound links. About 38 Creators-grounded briefs. Slugs appear on articles and episodes. Attic Beyond: needs an API key. Unknown slugs 404. Do not invent a dossier.
| Name | Type | Req | Description |
|---|---|---|---|
| market | string | yes | Market: rare-coins, sports-cards, collector-cars, or art. Names such as Rare Coins or fine art are accepted. |
| slug | string | yes | Dossier slug from an article or episode, such as a Creators object slug. |
No output schema declared.
No examples provided.
attic_get_episode Get a Creators episode ~76
Get one Creators episode by episode number or slug. Prefer episode when you have the number. Returns the summary, show notes on atticcapital.com, collection, and audio URL. Public.
| Name | Type | Req | Description |
|---|---|---|---|
| episode | integer | – | Episode number. Preferred over slug. |
| slug | string | – | Episode slug if you do not have the number. |
No output schema declared.
No examples provided.
attic_get_indexes Get Market Strength indexes ~119
Attic Market Strength composites for rare coins, sports cards, collector cars, and fine art. Week-0 levels are 100 until scored inputs exist. Peer feeds may be stub_until_licensed. Omit market for the full package. Attic Beyond: needs an API key. Do not invent index levels. This is not the Price Indexes pillar of the weekly report.
| Name | Type | Req | Description |
|---|---|---|---|
| market | string | – | Optional market. Index slugs are rare-coin, sports-card, collector-car, and art. Plural report slugs are accepted. |
No output schema declared.
No examples provided.
attic_get_market_report Get a weekly market report ~206
Get one weekly top-5 roster for a market, layer, and pillar. Use this for 'top 5', 'who is in the report', or a Headlines / Beyond pillar. For the paragraph on one rank, call attic_get_report_entry. For a name across pillars, use attic_search. layer=beyond is Attic Beyond and needs an API key.
| Name | Type | Req | Description |
|---|---|---|---|
| layer | string | yes | headlines (public weekly top 5) or beyond (Attic Beyond, paid). |
| market | string | yes | Market: rare-coins, sports-cards, collector-cars, or art. Names such as Rare Coins or fine art are accepted. |
| pillar | string | yes | Pillar slug or name. Slugs: collectors, the-objects, houses, price-indexes, gatherings, brands-of-influence, wealth-transfer, asset-based-lending, authentication, infrastructure, independent-appraise… |
No output schema declared.
No examples provided.
attic_get_report_entry Get one report entry ~206
Get one ranked name from a weekly pillar pack, with its summary and a short expanded excerpt. Requires market, layer, and pillar. rank is 1-5 and defaults to 1. The excerpt is not the whole page. layer=beyond is Attic Beyond.
| Name | Type | Req | Description |
|---|---|---|---|
| layer | string | yes | headlines (public weekly top 5) or beyond (Attic Beyond, paid). |
| market | string | yes | Market: rare-coins, sports-cards, collector-cars, or art. Names such as Rare Coins or fine art are accepted. |
| pillar | string | yes | Pillar slug or name. Slugs: collectors, the-objects, houses, price-indexes, gatherings, brands-of-influence, wealth-transfer, asset-based-lending, authentication, infrastructure, independent-appraise… |
| rank | integer | – | Rank from 1 to 5. Defaults to 1. |
No output schema declared.
No examples provided.
attic_list_articles List Attic articles ~165
List published atticcapital.com articles: title, date, URL, and a short excerpt. Never the full body. Optional q matches title, slug, and excerpt. Optional market (rare-coins, sports-cards, collector-cars, art, or other) and since (YYYY-MM-DD). Newest first.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Default 8, max 20. |
| market | string | – | Optional market: rare-coins, sports-cards, collector-cars, art, fine-art, or other. |
| offset | integer | – | Skip this many articles. Default 0. |
| q | string | – | Optional keyword over title, slug, and excerpt. |
| since | string | – | Keep articles published on or after this YYYY-MM-DD date. |
No output schema declared.
No examples provided.
attic_list_episodes List Creators episodes ~112
List Creators & Cultural Icons podcast episodes (public): number, title, date, summary, show-notes URL, and audio URL. Optional q searches title, slug, and summary. Optional market filters the mapped collection. Newest episode number first.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Default 8, max 20. |
| market | string | – | Optional market filter. |
| offset | integer | – | Skip this many episodes. |
| q | string | – | Optional keyword over title, slug, and summary. |
No output schema declared.
No examples provided.
attic_list_gatherings List Attic gatherings ~88
List shows, auctions, and other gatherings on the Attic calendar. Optional market filter. Public. This is the calendar, not the Gatherings pillar of the weekly report (use attic_get_market_report with pillar gatherings for that top 5).
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | How many gatherings. Default 12, max 40. |
| market | string | – | Optional market filter. |
No output schema declared.
No examples provided.
attic_list_markets List Attic markets ~63
List the four Attic collector markets (rare coins, sports cards, collector cars, fine art) with Headlines, Beyond, and Creators page URLs on atticcapital.com. Use this when you need the canonical page to link, not a top-5 roster.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
attic_list_pillars List Attic pillars ~44
List the 14 locked report pillars in order (Collectors through Insights In Depth). Use the slug with attic_get_market_report. This does not return the ranked names.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
attic_lookup_psa_cert Look up a PSA cert (stub) ~84
STUB. Does not return a PSA grade or population. PCGS comps are not offered. Do not call this to answer what a card graded or sold for. Requires an Attic API key; without one, the tool explains Attic Beyond. Never invent a cert result.
| Name | Type | Req | Description |
|---|---|---|---|
| cert | string | yes | PSA certification number. The live lookup is not enabled. |
No output schema declared.
No examples provided.
attic_search Search Attic reports ~128
Keyword search across roster names, summaries, and expanded report copy. The parameter is query (not q). This does not search articles or episodes. Optional market and layer filters. layer=beyond is Attic Beyond. Use attic_list_articles for the article archive.
| Name | Type | Req | Description |
|---|---|---|---|
| layer | string | – | Optional layer filter. Omit to search the public index. |
| limit | integer | – | How many hits to return. Default 8, max 20. |
| market | string | – | Optional market filter. |
| query | string | yes | Keywords, at least 2 characters. Sent as the query parameter. |
No output schema declared.
No examples provided.
attic_status Attic status ~46
Current Attic connector status: API version, the weekly as-of date, the four markets, and the 14 pillars. Call this first when the user asks what week the reports cover.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Attic MCP server?
Attic is a hosted endpoint at https://mcp.atticcapital.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.atticcapital.com
claude mcp add --transport http com-atticcapital-attic 'https://mcp.atticcapital.com/mcp'
What is the Attic MCP server?
Attic is an MCP server listed in the public MCP registry as com.atticcapital/attic. Weekly Attic Capital reports for coins, cards, cars, and art. This page covers its hosted endpoint (https://mcp.atticcapital.com/mcp).
Is the Attic MCP server safe to use?
Attic scores 66 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Attic MCP server expose?
Attic exposes 18 tools: attic_status, attic_list_markets, attic_list_pillars, attic_get_market_report, attic_get_report_entry, and 13 more. Their descriptions and schemas cost roughly 1,981 tokens of context every time the server is loaded.
Does the Attic MCP server require authentication?
No. We connected to Attic without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Attic MCP server still maintained?
Attic is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.