Appside Docs and App Catalog
REMOTE · APPSIDE.BUILD
Game web store docs plus a free app catalog: agents list, verify and search apps and games.
Available components
Last scanned (23 hours ago)
Scores higher than 55% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Code Search and Documentation
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 Security74
- 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 is enforced; there's no plaintext access path. View diagnostics → Pass
- 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 Usability74
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 1077 tokens (~76/item across 14 items; 13 tools + 1 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage72
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 16% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 13 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 15 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
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.
- 3 Nov 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “get_sdk_status” rewrote its description, which is the text the model reads security
- Schema quality: 680 → 1077 ▼ functional
- New tool “claim_mcp_listing” functional
- New tool “confirm_mcp_claim” functional
- New tool “create_account” functional
- New tool “submit_index_entry” functional
- New tool “submit_mcp_server” functional
- “register_app” added an optional parameter “token” cosmetic
- “verify_app” added an optional parameter “token” cosmetic
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
- Tool “register_app” rewrote its description, which is the text the model reads security
- Tool “verify_app” rewrote its description, which is the text the model reads security
- Schema quality: 66 → 75 ▼ functional
- “register_app” reworded the description of “url” cosmetic
- “register_app” reworded the description of “webBuildUrl” cosmetic
- 30 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: 33 → 66 ▼ functional
- Tool coverage: 0% → 16% ▲ functional
- Server version: 0.1.0 → 0.2.0 functional
- New tool “get_app” functional
- New tool “register_app” functional
- New tool “search_apps” functional
- New tool “verify_app” functional
- 29 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.
- 27 Oct 26 +5
- HTTPS: unverified → pass ▲ security
- Stability: unverified → 0.03 ▲ functional
- 26 Oct 26 +43
- Authorization: unverified → partial ▲ security
- Injection markers: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- First check of Judged manipulation: pass security
- MCP protocol: unverified → fail ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- Schema quality: unverified → 100 ▲ functional
- First check of Tool coverage: 0 functional
- First check of Schema quality: fail functional
- First check of Schema quality: fair functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: pass functional
- 25 Oct 26 18
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 4 Nov 2026 · Probed https://appside.build/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=appside.build | CN=WE1,O=Google Trust Services,C=US | 30 Oct 2026 | 28 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 93126ea70730935136faf9cf6f2835d |
| SANs: appside.build, play.appside.build, *.play.appside.build | ||||||
| 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 appside.build. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| build. | present | 30770, 38839 | 8, 8 | Verified |
| appside.build. | 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 |
| Header | Value |
|---|---|
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://appside.build/mcp | Verified | 200 | |
| http (plaintext) | http://appside.build/mcp | HTTPS enforced | 301 | https://appside.build/mcp |
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 →
claim_mcp_listing ~59
Get a domain-proof token and .well-known publication instructions for an MCP listing. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | – |
| token | string | – | – |
No output schema declared.
No examples provided.
confirm_mcp_claim ~52
Confirm domain proof after publishing the verification token. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | – |
| token | string | – | – |
No output schema declared.
No examples provided.
create_account ~65
Create an Appside account without a form. Save the bearer token securely; it is shown once. Give the human the claimUrl. Unclaimed accounts expire after 30 days.
| Name | Type | Req | Description |
|---|---|---|---|
| agent | string | yes | – |
| string | – | – | |
| purpose | string | – | – |
No output schema declared.
No examples provided.
get_app ~45
Get a verified public app by registration id or slug. Pending, expired or moderated listings are not returned; no private contacts or verification tokens are exposed.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
No output schema declared.
No examples provided.
get_pricing ~21
Get Appside published payment fee and fixed-fee policy.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_sdk_snippet ~36
Get a repository SDK example and its documented verification status. Grant items only on verified backend delivery.
| Name | Type | Req | Description |
|---|---|---|---|
| platform | string | yes | – |
No output schema declared.
No examples provided.
get_sdk_status ~34
List all SDK download URLs, install instructions and scoped verification status, or select one platform.
| Name | Type | Req | Description |
|---|---|---|---|
| platform | string | – | – |
No output schema declared.
No examples provided.
register_app ~274
List any app or game you built in the Appside public app catalog. No Appside store or account required. Supply plain-text metadata and your website or exact https://<account>.itch.io/<game> page (or App Store/Google Play listing for a store-only app). Returns an id and ownership token; publish the token then call verify_app. Nothing is public until verified; pending entries expire after 14 days.
| Name | Type | Req | Description |
|---|---|---|---|
| appStoreUrl | string | – | – |
| category | string | yes | – |
| contactEmail | string | – | Optional private contact, never shown publicly. |
| description | string | yes | – |
| name | string | yes | – |
| platforms | array | yes | – |
| playStoreUrl | string | – | – |
| token | string | – | Optional Appside bearer token. Associates registrations with your account. Store securely; never log it. |
| url | string | – | HTTPS app website on a domain you control, or the exact game page on your own itch.io subdomain. Each itch game path is a separate identity. Omit only for store-only apps. |
| webBuildUrl | string | – | HTTPS playable build on your verified hostname, an itch game page, or https://itch.io/embed-upload/<id>; itch game pages resolve to the browser upload at verification; click-to-load sandboxed Play. |
No output schema declared.
No examples provided.
search_apps ~67
Search verified public apps and games by text, category or playable web build. Pending, expired and moderated listings are excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | – |
| limit | integer | – | – |
| offset | integer | – | – |
| playable | boolean | – | – |
| query | string | – | – |
No output schema declared.
No examples provided.
search_docs ~28
Search Appside public developer Markdown; returns source links and excerpts.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | – |
No output schema declared.
No examples provided.
submit_index_entry ~60
Submit a web store to the Index for review; does not establish ownership or publish automatically. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.
| Name | Type | Req | Description |
|---|---|---|---|
| entry | object | yes | – |
| token | string | – | – |
No output schema declared.
No examples provided.
submit_mcp_server ~60
Submit an MCP server for connectivity checks. Domain proof is still required to claim ownership. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.
| Name | Type | Req | Description |
|---|---|---|---|
| server | object | yes | – |
| token | string | – | – |
No output schema declared.
No examples provided.
verify_app ~125
Verify a pending registration after publishing the returned token at /.well-known/appside-verify.txt or in a meta name="appside-verify" content="TOKEN" tag on the submitted website. For itch.io, put the token anywhere in the public text of the exact submitted game page (edit its description). Store-only apps put the token in every submitted public store description. Success makes the catalog page searchable and indexable.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
| token | string | – | Optional Appside bearer token. Associates registrations with your account. Store securely; never log it. |
No output schema declared.
No examples provided.
How do I install the Appside Docs and App Catalog MCP server?
Appside Docs and App Catalog is a hosted endpoint at https://appside.build/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 · appside.build
claude mcp add --transport http build-appside-mcp 'https://appside.build/mcp'
What is the Appside Docs and App Catalog MCP server?
Appside Docs and App Catalog is an MCP server listed in the public MCP registry as build.appside/mcp. Game web store docs plus a free app catalog: agents list, verify and search apps and games. This page covers its hosted endpoint (https://appside.build/mcp).
Is the Appside Docs and App Catalog MCP server safe to use?
Appside Docs and App Catalog scores 70 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 Appside Docs and App Catalog MCP server expose?
Appside Docs and App Catalog exposes 13 tools: search_docs, get_sdk_snippet, get_sdk_status, get_pricing, register_app, and 8 more. Their descriptions and schemas cost roughly 926 tokens of context every time the server is loaded.
Does the Appside Docs and App Catalog MCP server require authentication?
No. We connected to Appside Docs and App Catalog without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Appside Docs and App Catalog MCP server still maintained?
Appside Docs and App Catalog is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.