CEF Radar
REMOTE · CEFRADAR.COM · SCANNED SEP 24
U.S. closed-end funds from SEC filings: activist stakes, tender offers, votes, costs, holdings.
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 Usability82
- 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 1444 tokens (~160/item across 9 items; 9 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 Management20
- Stability observed for 6 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 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the CEF Radar MCP server?
CEF Radar is a hosted endpoint at https://cefradar.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 · cefradar.com
claude mcp add --transport http com-cefradar-cefradar 'https://cefradar.com/mcp'
{
"mcpServers": {
"com-cefradar-cefradar": {
"url": "https://cefradar.com/mcp"
}
}
} {
"servers": {
"com-cefradar-cefradar": {
"type": "http",
"url": "https://cefradar.com/mcp"
}
}
} [mcp_servers.com-cefradar-cefradar] url = "https://cefradar.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-cefradar-cefradar": {
"type": "remote",
"url": "https://cefradar.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-cefradar-cefradar --url 'https://cefradar.com/mcp' --transport streamable-http
mcp_servers:
com-cefradar-cefradar:
url: "https://cefradar.com/mcp" {
"McpServers": {
"com-cefradar-cefradar": {
"Transport": "http",
"Url": "https://cefradar.com/mcp"
}
}
} assistant mcp add com-cefradar-cefradar -t streamable-http -u 'https://cefradar.com/mcp'
{
"mcpServers": {
"com-cefradar-cefradar": {
"type": "http",
"url": "https://cefradar.com/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.
- 24 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 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 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 18 Sept 26 76
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 Sept 2026 · Probed https://cefradar.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=cefradar.com | CN=YE2,O=Let's Encrypt,C=US | 16 Sept 2026 | 15 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 5d2fe0f82363358e9e7dfcbccbae5ad88ff |
| SANs: *.cefradar.com, cefradar.com | ||||||
| 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 cefradar.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| cefradar.com. | present | 2371 | 13 | Verified |
| cefradar.com. | 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 |
| content-security-policy | default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; font-src 'self'; connect-src 'self'; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://cefradar.com/mcp | Verified | 200 | |
| http (plaintext) | http://cefradar.com/mcp | HTTPS enforced | 301 | https://cefradar.com/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 →
get_activist One large investor ~113
Describes one large investor in plain words: how many funds it is in and where it is pushing for changes, what it usually does, the funds it has left and its recent moves, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | The investor's short name from list_activists, e.g. saba. |
No output schema declared.
No examples provided.
get_fund One fund: who is targeting it, what to act on, costs ~136
Tells you, in plain words, whether a large investor is targeting a U.S. closed-end fund, whether the fund has announced something you must act on and by when, what it costs, how much it borrows, how big it is and what it holds, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| ticker | string | yes | The fund's exchange ticker, e.g. JOF (use search_funds when you only know the name). |
No output schema declared.
No examples provided.
get_fund_events One fund's dated announcements ~151
Lists one closed-end fund's dated announcements a holder may need to act on (offers to buy back shares, shareholder votes, closings, mergers, offers of new shares, payout notices) with the deadline and what to do, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| months | integer | – | How many months back to look, 1 to 120 (default 24). |
| ticker | string | yes | The fund's exchange ticker, e.g. JOF (use search_funds when you only know the name). |
No output schema declared.
No examples provided.
get_fund_holdings What a fund holds ~105
Describes what a closed-end fund holds - the mix by type of holding and country and its largest positions - from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| ticker | string | yes | The fund's exchange ticker, e.g. JOF (use search_funds when you only know the name). |
No output schema declared.
No examples provided.
latest_filings Newest notices from large investors ~136
Lists the newest notices large investors filed about owning 5% or more of a fund (raised or cut a stake, may push for changes, passive, sold down), one plain sentence each, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| cef_only | boolean | – | True (default) = closed-end funds only; False = companies too. |
| days | integer | – | How many days back to look, 1 to 365 (default 7). |
No output schema declared.
No examples provided.
list_activists Large investors we follow ~86
Lists the large investors we follow - those who buy into closed-end funds and sometimes push for changes - with how many funds each is in now and its newest move, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
list_events Recent announcements across funds ~284
Lists recent announcements across all U.S. closed-end funds (buy-back offers, votes, closings, mergers, offers of new shares, payout notices), newest first, each with the fund, the deadline and what to do, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| kind | – | – | Only one kind of announcement, written as its code: tender_offer (offer to buy back shares), tender_update (buy-back offer updated), tender_result (buy-back offer results), proxy_contest (a fight ove… |
| only_open | boolean | – | True = only announcements a holder can still act on. |
| since | – | – | Only announcements filed on or after this date, written YYYY-MM-DD. |
No output schema declared.
No examples provided.
search_funds Find a fund ~117
Finds a U.S. closed-end fund by its ticker, its name or the firm that runs it and returns up to 6 matches with a link to each fund's page, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Ticker, fund name or the firm that runs it, e.g. JOF or 'japan smaller'. |
No output schema declared.
No examples provided.
which_funds_hold Which funds hold a security ~127
Lists every U.S. closed-end fund whose latest quarterly holdings report includes a company or bond you name (or its CUSIP or ISIN), with each fund's share of it and the report date, from SEC filings, with as-of dates and links to the original documents. Results are informational, read automatically from public filings and may contain errors; always show the source link and never present results as personal investment advice.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | A company or bond name as printed on a statement, or its CUSIP or ISIN, e.g. 'apple'. |
No output schema declared.
No examples provided.
What is the CEF Radar MCP server?
CEF Radar is an MCP server listed in the public MCP registry as com.cefradar/cefradar. U.S. closed-end funds from SEC filings: activist stakes, tender offers, votes, costs, holdings. This page covers its hosted endpoint (https://cefradar.com/mcp).
Is the CEF Radar MCP server safe to use?
CEF Radar scores 79 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 CEF Radar MCP server expose?
CEF Radar exposes 9 tools: search_funds, get_fund, get_fund_events, get_fund_holdings, list_events, and 4 more. Their descriptions and schemas cost roughly 1,255 tokens of context every time the server is loaded.
Does the CEF Radar MCP server require authentication?
No. We connected to CEF Radar without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the CEF Radar MCP server still maintained?
CEF Radar is still listed as active in the MCP registry. We last reached this channel on 24 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.