ClusterHack
REMOTE · CLUSTERHACK.DEV · SCANNED SEP 20
Run hackathons end to end: events, teams, submissions, judging and winners.
Available components
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 Security83
- 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
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability90
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 6500 tokens (~106/item across 61 items; 60 tools + 1 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management80
- Stability observed for 24 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 60 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 62 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the ClusterHack MCP server?
ClusterHack is a hosted endpoint at https://clusterhack.dev/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 · clusterhack.dev
claude mcp add --transport http dev-clusterhack-clusterhack 'https://clusterhack.dev/mcp/'
{
"mcpServers": {
"dev-clusterhack-clusterhack": {
"url": "https://clusterhack.dev/mcp/"
}
}
} {
"servers": {
"dev-clusterhack-clusterhack": {
"type": "http",
"url": "https://clusterhack.dev/mcp/"
}
}
} [mcp_servers.dev-clusterhack-clusterhack] url = "https://clusterhack.dev/mcp/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-clusterhack-clusterhack": {
"type": "remote",
"url": "https://clusterhack.dev/mcp/",
"enabled": true
}
}
} openclaw mcp add dev-clusterhack-clusterhack --url 'https://clusterhack.dev/mcp/' --transport streamable-http
mcp_servers:
dev-clusterhack-clusterhack:
url: "https://clusterhack.dev/mcp/" {
"McpServers": {
"dev-clusterhack-clusterhack": {
"Transport": "http",
"Url": "https://clusterhack.dev/mcp/"
}
}
} assistant mcp add dev-clusterhack-clusterhack -t streamable-http -u 'https://clusterhack.dev/mcp/'
{
"mcpServers": {
"dev-clusterhack-clusterhack": {
"type": "http",
"url": "https://clusterhack.dev/mcp/"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Sept 26 0
- Tool “event_branding” rewrote its description, which is the text the model reads security
- 9 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 7 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
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 20 Sept 2026 · Probed https://clusterhack.dev/mcp/
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=clusterhack.dev | CN=YE2,O=Let's Encrypt,C=US | 26 Jul 2026 | 24 Oct 2026 | ECDSA 256 | ECDSA-SHA384 | 52f9bf20322d7387b3d38b653da8022ef6d |
| SANs: clusterhack.dev | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of clusterhack.dev. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| clusterhack.dev. | present | 50182 | 8 | Verified |
| clusterhack.dev. | Verified address RRset verified with the apex keys |
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 |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://clusterhack.dev/mcp/ | Verified | 200 | |
| http (plaintext) | http://clusterhack.dev/mcp/ | HTTPS enforced | 301 | https://clusterhack.dev/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 →
team_locations Get a team's location ~91
Read the physical location details linked to a team's additional-info profile (street, city, state, zip), if one has been set. There is currently no self-service way to create a new location through this API — location rows are set up separately, then referenced by id via `team_additional_info`'s `location_id`.
| Name | Type | Req | Description |
|---|---|---|---|
| team_id | integer | yes | Id of the team. |
No output schema declared.
No examples provided.
team_matchmaking_teams Suggest teams for a free agent ~122
AI-ranked list of teams one free (teamless) participant could join, within the same event. Callable by the free-agent listing's own owner, or an admin of the event. Use `event_free_agents` or `event_join_as_free_agent` to get a `free_member_id`. Throttled — do not call it in a tight loop.
| Name | Type | Req | Description |
|---|---|---|---|
| free_member_id | integer | yes | Id of the free-agent listing. |
| locale | string | – | Language for the generated explanations, e.g. 'en' or 'ru'. |
No output schema declared.
No examples provided.
team_members List team members ~90
List a team's current members with their role and caption. Use the row `id` (a membership id, not a user id) with `team_assign_role` or `team_remove_member`.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, starting at 1. |
| page_size | integer | – | Rows per page (max 100). |
| team_id | integer | yes | Id of the team. |
No output schema declared.
No examples provided.
team_open_roles List open team roles ~267
List the positions teams are looking to fill ("we need a designer"). Visibility is limited to what the signed-in account can already see: their own team's open roles, or — if they organise the event — every team's. It is not a public cross-team browse for a stranger looking for any team: that is `team_seeking_members`, which reads the find-a-team page's own list (pair it with `event_free_agents` and `team_matchmaking_teams`). Filter with `team_id` for one team, or `event_slug` to see everything the caller can see at that event. `team_id` is answered exactly. `event_slug` (and the unfiltered form) is not: the underlying endpoint narrows by one team at a time and has no event filter, so a very large event can return a `note` saying rows were left unscanned. Ask per team when that matters.
| Name | Type | Req | Description |
|---|---|---|---|
| event_slug | string | – | Only open roles at this event (within what the caller can see). |
| page | integer | – | Page number, starting at 1. |
| page_size | integer | – | Rows per page (max 100). |
| team_id | integer | – | Only this team's open roles. |
No output schema declared.
No examples provided.
team_posts List a team's posts ~113
List a team's public updates ("twits") — the short build-log posts a team publishes as it works, in the order the server returns them. Use it to catch up on what a team has been doing, or to check what has already been posted before writing another update with `team_post`.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, starting at 1. |
| page_size | integer | – | Rows per page (max 100). |
| team_id | integer | yes | Id of the team. |
No output schema declared.
No examples provided.
team_readiness Get a team's readiness ~44
Check whether a team has marked itself ready to present, plus whether it is banned or currently accessible for judging.
| Name | Type | Req | Description |
|---|---|---|---|
| team_id | integer | yes | Id of the team. |
No output schema declared.
No examples provided.
team_roles List a team's roles ~78
List the roles a team has defined (e.g. "Frontend", "Designer"), which members can be assigned via `team_assign_role`.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, starting at 1. |
| page_size | integer | – | Rows per page (max 100). |
| team_id | integer | yes | Id of the team. |
No output schema declared.
No examples provided.
team_seeking_members Browse teams looking for people ~207
Browse the teams of one event that are advertising open positions — the public "who is recruiting" list behind the find-a-team page, readable by anyone, including someone who has not joined the event yet. This is the tool for a person looking for a team. `team_open_roles` is the other direction: it lists open positions the caller already has access to (their own teams', or every team's if they organise the event) and shows a stranger nothing. Each row here carries the team's public profile plus its `open_roles`. Follow up with `team_request_join`, or list yourself with `event_join_as_free_agent` if nothing fits.
| Name | Type | Req | Description |
|---|---|---|---|
| event_slug | string | yes | Slug of the event. |
| page | integer | – | Page number, starting at 1. |
| page_size | integer | – | Rows per page (max 100). |
| search | string | – | Free-text filter over team name and description. |
No output schema declared.
No examples provided.
tech_list List technologies ~61
List technologies (tech-stack tags) that projects and teams can be labelled with, e.g. "React", "PostgreSQL".
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number. |
| page_size | integer | – | Results per page (max 100). |
No output schema declared.
No examples provided.
whoami Who am I ~128
Who is signed in, what roles they hold, and where. Call this first in any new conversation. It returns the account, the OAuth permissions this connection was granted, and — crucially — the list of events, teams and companies the user belongs to *with the role they hold in each one* (organizer, judge, participant, team lead, free agent, builder, speaker, company admin, platform admin). Use it to decide which tools apply before calling anything else, and to resolve "my event" / "our team" into a concrete slug or id.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the ClusterHack MCP server?
ClusterHack is an MCP server listed in the public MCP registry as dev.clusterhack/clusterhack. Run hackathons end to end: events, teams, submissions, judging and winners. This page covers its hosted endpoint (https://clusterhack.dev/mcp/).
Is the ClusterHack MCP server safe to use?
ClusterHack scores 87 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 ClusterHack MCP server expose?
ClusterHack exposes 60 tools: event_roles, list_api_endpoints, list_capabilities, search, server_info, and 55 more. Their descriptions and schemas cost roughly 6,274 tokens of context every time the server is loaded.
Does the ClusterHack MCP server require authentication?
No. We connected to ClusterHack without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the ClusterHack MCP server still maintained?
ClusterHack is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.