Cited Brief
REMOTE · CITED-BRIEF.CITED-BRIEF.WORKERS.DEV
Paid web research tools: cited briefs, quote checks, page text. Pay per call in USDC via x402.
Available components
Last scanned (13 hours ago)
Scores higher than 59% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Education and Research
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 Usability72
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 889 tokens (~127/item across 7 items; 7 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 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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.
- 17 Oct 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.
- 15 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.
- 14 Oct 26 +1
- Schema quality: pass → fail ▼ functional
- Server version: 1.1.0 → 1.2.0 functional
- New tool “check_doi” functional
- New tool “check_links” functional
- New tool “domain_check” functional
- New tool “robots_check” functional
- 13 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 12 Oct 26 66
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 18 Oct 2026 · Probed https://cited-brief.cited-brief.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=cited-brief.workers.dev | CN=YE2,O=Let's Encrypt,C=US | 12 Oct 2026 | 10 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 659ca35620bd8c03e1e959e93db9cc11e75 |
| SANs: *.cited-brief.workers.dev, cited-brief.workers.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 insecure
Validation of cited-brief.cited-brief.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | 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://cited-brief.cited-brief.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://cited-brief.cited-brief.workers.dev/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 →
check_doi Check papers by DOI or arXiv id ~147
Looks up 1-10 DOIs or arXiv ids: does the paper exist, its title, authors, year and venue, how often it is cited, and whether it has been retracted. Pass the titles you cited to see if they match the real ones. Catches made-up references. No AI involved; if the lookup services are down you are not charged. Price: $0.01 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| ids | array | yes | DOIs (10.xxxx/...), doi.org links or arXiv ids |
| titles | array | – | Titles you cited, in the same order as ids, to compare with the real ones |
No output schema declared.
No examples provided.
check_links Check that cited links work ~103
Checks 1-10 URLs: HTTP status, where redirects end, the page title, and a warning when a "200" page is really a not-found page. Use it to catch dead or made-up citations. No AI involved; a dead link is a valid answer, but a request with no usable URL is not charged. Price: $0.01 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| urls | array | yes | Public http(s) URLs to check |
No output schema declared.
No examples provided.
check_quote Check quotes against a page ~105
Checks whether 1-10 quotes really appear on a web page (ignoring case, spacing, and quote or dash styles) and returns the surrounding text. Use it to catch made-up citations. No AI involved; if the page can't be read you are not charged. Price: $0.01 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| quotes | array | yes | Exact sentences you expect on the page |
| url | string | yes | Public http(s) page to check |
No output schema declared.
No examples provided.
cited_brief Cited brief ~95
Answers a question from 1-5 web pages you name. Every claim comes with a verbatim quote that is re-checked on the live page; claims that fail are dropped, and if none pass you are not charged. Price: $0.10 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| question | string | yes | The question to answer |
| urls | array | yes | Public http(s) pages to answer from |
No output schema declared.
No examples provided.
domain_check Check a domain's age and DNS ~174
Domain age and registration facts (created, expires, registrar, status, nameservers) from the registry's RDAP or WHOIS service, plus live DNS (address records, mail servers, SPF, DMARC) and plain flags such as "registered only 9 days ago". Use it to judge how trustworthy a site is. No AI involved. Works for most TLDs (.com, .org, .io, .ai, .dev, .co.uk and over a thousand more); if the registry has no public lookup (for example .de, .jp, .co, .ru, .ac.uk) or does not answer, you are not charged. Price: $0.02 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Domain name or URL, for example example.com |
No output schema declared.
No examples provided.
page_text Read a page as clean text ~95
Fetches a public web page and returns its title and readable text, without scripts, styles or markup (up to 100,000 characters). If the page can't be read you are not charged. Price: $0.01 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| max_chars | integer | – | Maximum characters of text to return (default 20000) |
| url | string | yes | Public http(s) page to read |
No output schema declared.
No examples provided.
robots_check May a crawler fetch this URL? ~118
Reads the site's robots.txt and says whether a crawler may fetch a URL (RFC 9309: the longest matching rule wins, Allow wins a tie), with the matching rule, crawl-delay and sitemaps. No AI involved; if robots.txt cannot be read you are not charged. Price: $0.01 USDC per call (x402).
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Public http(s) URL you want to fetch |
| user_agent | string | – | Your crawler's name, for example MyBot (default: any crawler) |
No output schema declared.
No examples provided.
How do I install the Cited Brief MCP server?
Cited Brief is a hosted endpoint at https://cited-brief.cited-brief.workers.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 · cited-brief.cited-brief.workers.dev
claude mcp add --transport http dev-workers-cited-brief-cited-brief-cited-brief 'https://cited-brief.cited-brief.workers.dev/mcp'
What is the Cited Brief MCP server?
Cited Brief is an MCP server listed in the public MCP registry as dev.workers.cited-brief.cited-brief/cited-brief. Paid web research tools: cited briefs, quote checks, page text. Pay per call in USDC via x402. This page covers its hosted endpoint (https://cited-brief.cited-brief.workers.dev/mcp).
Is the Cited Brief MCP server safe to use?
Cited Brief scores 69 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 Cited Brief MCP server expose?
Cited Brief exposes 7 tools: cited_brief, check_quote, page_text, check_links, check_doi, and 2 more. Their descriptions and schemas cost roughly 837 tokens of context every time the server is loaded.
Does the Cited Brief MCP server require authentication?
No. We connected to Cited Brief without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Cited Brief MCP server still maintained?
Cited Brief is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.