Valluvakural
REMOTE · KURAL-MCP.VALLUVAKURALSUPPORT.WORKERS.DEV
Valluvakural (Valluvarkural) — Thirukkural wisdom lens: verified couplets, quote checks.
Available components
Last scanned (3 hours ago)
Scores higher than 57% 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 405, 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 Usability60
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 999 tokens (~499/item across 2 items; 2 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 Management33
- Stability observed for 10 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
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 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
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 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 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 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.
- 13 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.
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 13. That category is still filling its 30-day observation window: 2 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.
- 10 Oct 26 63
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://kural-mcp.valluvakuralsupport.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=valluvakuralsupport.workers.dev | CN=YE2,O=Let's Encrypt,C=US | 4 Oct 2026 | 2 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6d663da58fe80327ab476ee6ba2359c1b87 |
| SANs: *.valluvakuralsupport.workers.dev, valluvakuralsupport.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 kural-mcp.valluvakuralsupport.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 |
| Header | Value |
|---|---|
| content-security-policy | default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; font-src 'self'; connect-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'none'; form-action 'self' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
| 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://kural-mcp.valluvakuralsupport.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://kural-mcp.valluvakuralsupport.workers.dev/mcp | Inconclusive | 405 |
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 →
kural_guidance Kural guidance ~356
Fetch verified Thirukkural couplets. CALL FIRST for ANY personal, emotional, moral, or life-guidance message — betrayal, lies, friendship, love, family, grief, anger, worry, anxiety, discipline, wealth, work, learning, meaning — even short or vague ones (“she betrayed me”, “I feel lost”). When in doubt, call this tool. Pass the user’s situation in natural language. Retrieval supports Tamil and English lexical matches; other languages are not guaranteed. Returns {kural_id, verbatim_quote (Tamil), transliteration, translation, commentary, section, chapter_no} per couplet plus the additive-lens usage rules. Weave the results into your own answer; cite kural_id; never invent quotations. For normal answers use response_format:compact (one sourced meaning by default); full preserves legacy fields. Explicit kural_id bypasses topic ranking. Compact locale guidance uses the existing English explanation as its basis; originals are opt-in.
| Name | Type | Req | Description |
|---|---|---|---|
| include_original | boolean | – | Compact: include the exact original Tamil couplet only when requested (otherwise omitted). |
| kural_id | integer | – | Exact requested verse number; conflicting query references fail instead of returning another verse. |
| limit | integer | – | Full: default 3, max 10. Compact: default 1, max 3. |
| locale | string | – | Answer language tag or auto (Tamil script selects ta, otherwise en). Source meaning is English; host renders it faithfully. |
| query | string | yes | Tamil or English situation, topic, Tamil verse, or kural ID (1–1330) |
| response_format | string | – | Use compact for meaning-first answers; omit for legacy full response. |
Structured output declared, but exposes no named fields.
No examples provided.
verify_quote Verify quote ~93
Letter-check a Thirukkural quotation against the canonical corpus BEFORE presenting or accepting it (Tamil or English accepted). Returns {verified, kural_id, tamil, english} on a match; when verified is false, do not present the quote — fetch a verified one with kural_guidance.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Tamil or English quote: full verse or unique fragment of at least two words and ten characters |
| Name | Type | Req | Description |
|---|---|---|---|
| english | string | – | – |
| kural_id | integer | – | – |
| reason | string | – | – |
| tamil | string | – | – |
| verified | boolean | yes | – |
No examples provided.
How do I install the Valluvakural MCP server?
Valluvakural is a hosted endpoint at https://kural-mcp.valluvakuralsupport.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 · kural-mcp.valluvakuralsupport.workers.dev
claude mcp add --transport http kenboe-kural-ai 'https://kural-mcp.valluvakuralsupport.workers.dev/mcp'
What is the Valluvakural MCP server?
Valluvakural is an MCP server listed in the public MCP registry as io.github.Kenboe/kural-ai. Valluvakural (Valluvarkural), Thirukkural wisdom lens: verified couplets, quote checks. This page covers its hosted endpoint (https://kural-mcp.valluvakuralsupport.workers.dev/mcp).
Is the Valluvakural MCP server safe to use?
Valluvakural scores 67 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 Valluvakural MCP server expose?
Valluvakural exposes 2 tools: kural_guidance, verify_quote. Their descriptions and schemas cost roughly 449 tokens of context every time the server is loaded.
Does the Valluvakural MCP server require authentication?
No. We connected to Valluvakural without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Valluvakural MCP server still maintained?
Valluvakural 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.