Arclight Events
REMOTE · ARCLIGHT.EVENTS · SCANNED SEP 25
Live events in 50 cities: AI/tech meetups, hackathons, conferences, concerts. Free, read-only.
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 Security80
- 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 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 Usability77
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 673 tokens (~168/item across 4 items; 4 tools + 0 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 Management27
- Stability observed for 8 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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 Arclight Events MCP server?
Arclight Events is a hosted endpoint at https://arclight.events/api/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 · arclight.events
claude mcp add --transport http events-arclight-mcp 'https://arclight.events/api/mcp'
{
"mcpServers": {
"events-arclight-mcp": {
"url": "https://arclight.events/api/mcp"
}
}
} {
"servers": {
"events-arclight-mcp": {
"type": "http",
"url": "https://arclight.events/api/mcp"
}
}
} [mcp_servers.events-arclight-mcp] url = "https://arclight.events/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"events-arclight-mcp": {
"type": "remote",
"url": "https://arclight.events/api/mcp",
"enabled": true
}
}
} openclaw mcp add events-arclight-mcp --url 'https://arclight.events/api/mcp' --transport streamable-http
mcp_servers:
events-arclight-mcp:
url: "https://arclight.events/api/mcp" {
"McpServers": {
"events-arclight-mcp": {
"Transport": "http",
"Url": "https://arclight.events/api/mcp"
}
}
} assistant mcp add events-arclight-mcp -t streamable-http -u 'https://arclight.events/api/mcp'
{
"mcpServers": {
"events-arclight-mcp": {
"type": "http",
"url": "https://arclight.events/api/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.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 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.
- 18 Sept 26 +2
- Schema quality: 138 → 168 ▼ functional
- Tool coverage: 67% → 100% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- “arclight_city_picks” reworded the description of “limit” cosmetic
- “arclight_search_events” reworded the description of “limit” cosmetic
- “arclight_search_events” reworded the description of “offset” cosmetic
- “arclight_search_events” reworded the description of “timeframe” cosmetic
- 17 Sept 26 71
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 25 Sept 2026 · Probed https://arclight.events/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=arclight.events | CN=WE1,O=Google Trust Services,C=US | 21 Sept 2026 | 20 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 48d0b999bbcb1fc40e8086624657b99b |
| SANs: arclight.events, *.arclight.events | ||||||
| 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 arclight.events. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| events. | present | 12487 | 8 | Verified |
| arclight.events. | 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 |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| content-security-policy | frame-ancestors 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(self), microphone=(self), camera=(), browsing-topics=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://arclight.events/api/mcp | Verified | 200 | |
| http (plaintext) | http://arclight.events/api/mcp | HTTPS enforced | 301 | https://arclight.events/api/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 →
arclight_city_picks Get curated picks for a city ~141
A small curated set of events worth going to in a city over the next few days, chosen for variety rather than raw recency. Use when someone asks what is worth doing rather than for an exhaustive list. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | yes | City slug or name. |
| limit | integer | – | How many picks to return. Capped at 10 on purpose — this is a curated shortlist chosen for variety, not a search. Use arclight_search_events when an exhaustive list is wanted. |
| response_format | string | – | Output format. 'markdown' to read back to a person, 'json' to compute over. |
No output schema declared.
No examples provided.
arclight_get_event Get one event by slug ~106
Fetch the full detail of one event by its Arclight slug (or its arclight.events URL): title, start time in the venue's own timezone, price, tags, description and the source link. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Output format. 'markdown' to read back to a person, 'json' to compute over. |
| slug | string | yes | Event slug, or the full arclight.events/event/<slug> URL. |
No output schema declared.
No examples provided.
arclight_list_cities List covered cities and topics ~81
List every metro Arclight covers, with the slug to pass to the other tools, plus the available topic filters. Call this first when unsure whether a city is covered. Read-only, no arguments required.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Output format. 'markdown' to read back to a person, 'json' to compute over. |
No output schema declared.
No examples provided.
arclight_search_events Search live events by city ~254
Search real, upcoming events in a city, optionally narrowed to a topic and timeframe. Every event is aggregated from a live source (Luma, Ticketmaster, SeatGeek, Skiddle, confs.tech and others) and links back to it — Arclight never invents listings and holds no tickets. Read-only. Returns paginated results with has_more/next_offset.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | yes | City slug or name, e.g. "san-francisco". See arclight_list_cities. |
| limit | integer | – | How many events to return in one call. Pair with offset to page. |
| offset | integer | – | How many events to skip, for paging. Pass the next_offset from the previous response rather than computing it; when has_more is false there is nothing left to fetch. Offset applies within the chosen… |
| response_format | string | – | Output format. 'markdown' to read back to a person, 'json' to compute over. |
| timeframe | string | – | How far ahead to look, measured from now. Past events are never returned. |
| topic | string | – | Optional topic filter. |
No output schema declared.
No examples provided.
What is the Arclight Events MCP server?
Arclight Events is an MCP server listed in the public MCP registry as events.arclight/mcp. Live events in 50 cities: AI/tech meetups, hackathons, conferences, concerts. Free, read-only. This page covers its hosted endpoint (https://arclight.events/api/mcp).
Is the Arclight Events MCP server safe to use?
Arclight Events scores 76 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 Arclight Events MCP server expose?
Arclight Events exposes 4 tools: arclight_search_events, arclight_get_event, arclight_city_picks, arclight_list_cities. Their descriptions and schemas cost roughly 582 tokens of context every time the server is loaded.
Does the Arclight Events MCP server require authentication?
No. We connected to Arclight Events without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Arclight Events MCP server still maintained?
Arclight Events is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.