CanonicAI — cited Answers corpus
REMOTE · CANONICAI.COM
Read-only hosted MCP over CanonicAI's cited Answers corpus on canonicai.com.
Available components
Last scanned (23 hours ago)
Scores higher than 86% of remote servers
Reachable. Last reached 23 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
- Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- 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 Usability76
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 336 tokens (~56/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 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.
- 9 Oct 26 +2
- Stability: 0.90 → pass security
- 4 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Oct 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.
- 30 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.
- 28 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
- 26 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.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 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.
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 23 Oct 2026 · Probed https://canonicai.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=canonicai.com | CN=YR1,O=Let's Encrypt,C=US | 10 Oct 2026 | 8 Jan 2027 | RSA 2048 | SHA256-RSA | 575de60a8ac1f719014eb5383497f02101f |
| SANs: canonicai.com | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of canonicai.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| canonicai.com. | 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=63072000 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://canonicai.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://canonicai.com/api/mcp | HTTPS enforced | 308 | https://canonicai.com/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 →
get_answer ~44
Return one Answer contract v0 record with citations for a known slug. Never fabricates content for unknown slugs.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | Answer slug from answers/index.json. |
| Name | Type | Req | Description |
|---|---|---|---|
| answer | string | yes | – |
| citations | array | yes | – |
| code | string | – | – |
| home | string | – | – |
| id | string | yes | – |
| message | string | – | – |
| question | string | yes | – |
| shortAnswer | string | – | – |
| slug | string | yes | – |
| url | string | yes | – |
No examples provided.
get_canon ~65
Return one canon-v1 record (constructs, relationships, open divergences, provenance, source works) for a known slug. Never fabricates content for unknown slugs; returns close-match slugs instead.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | Canon slug from canons/index.json. |
| Name | Type | Req | Description |
|---|---|---|---|
| action_statement | string | – | – |
| closeMatches | array | – | – |
| code | string | – | – |
| constructs | array | yes | – |
| coverage | object | – | – |
| guide_url | string | – | – |
| message | string | – | – |
| open_divergences | array | – | – |
| provenance | object | – | – |
| relationships | array | – | – |
| slug | string | yes | – |
| source_works | array | – | – |
| url | string | yes | – |
No examples provided.
list_answers ~58
List published CanonicAI answer summaries from the static Answers corpus. Returns slug, id, question, canonical URLs, and citation counts.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum summaries to return. |
| offset | integer | – | Number of summaries to skip. |
| Name | Type | Req | Description |
|---|---|---|---|
| answers | array | yes | – |
| count | integer | yes | – |
No examples provided.
list_canons ~60
List published CanonicAI domain canons from the static canon bundle. Returns slug, action statement, construct/source counts, and canonical URLs.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum summaries to return. |
| offset | integer | – | Number of summaries to skip. |
| Name | Type | Req | Description |
|---|---|---|---|
| canons | array | yes | – |
| count | integer | yes | – |
No examples provided.
search_answers ~48
Search CanonicAI answers by simple deterministic token scoring over question, shortAnswer, and answer fields.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum matches to return. |
| q | string | yes | Search query. |
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | – |
| matches | array | yes | – |
| query | string | yes | – |
No examples provided.
search_constructs ~61
Search construct names and definitions across all canons (or one canon) by deterministic token scoring.
| Name | Type | Req | Description |
|---|---|---|---|
| canon | string | – | Restrict to one canon slug. |
| limit | integer | – | Maximum matches to return. |
| q | string | yes | Search query. |
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | yes | – |
| matches | array | yes | – |
| query | string | yes | – |
No examples provided.
How do I install the CanonicAI — cited Answers corpus MCP server?
CanonicAI — cited Answers corpus is a hosted endpoint at https://canonicai.com/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 · canonicai.com
claude mcp add --transport http com-canonicai-canonicai-answers 'https://canonicai.com/api/mcp'
What is the CanonicAI — cited Answers corpus MCP server?
CanonicAI — cited Answers corpus is an MCP server listed in the public MCP registry as com.canonicai/canonicai-answers. Read-only hosted MCP over CanonicAI's cited Answers corpus on canonicai.com. This page covers its hosted endpoint (https://canonicai.com/api/mcp).
Is the CanonicAI — cited Answers corpus MCP server safe to use?
CanonicAI — cited Answers corpus scores 81 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 CanonicAI — cited Answers corpus MCP server expose?
CanonicAI — cited Answers corpus exposes 6 tools: list_answers, get_answer, search_answers, list_canons, get_canon, search_constructs. Their descriptions and schemas cost roughly 336 tokens of context every time the server is loaded.
Does the CanonicAI — cited Answers corpus MCP server require authentication?
No. We connected to CanonicAI — cited Answers corpus without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the CanonicAI — cited Answers corpus MCP server still maintained?
CanonicAI — cited Answers corpus is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.