io.usefulapi/knack
REMOTE · KNACK.USEFULAPI.IO · SCANNED SEP 20
Read, create, update and delete records; inspect objects, fields and schema in your Knack database.
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 Security78
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 401, 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
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
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 1182 tokens (~131/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 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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 9 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 io.usefulapi/knack MCP server?
io.usefulapi/knack is a hosted endpoint at https://knack.usefulapi.io/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 · knack.usefulapi.io
claude mcp add --transport http io-usefulapi-knack 'https://knack.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-knack": {
"url": "https://knack.usefulapi.io/mcp"
}
}
} {
"servers": {
"io-usefulapi-knack": {
"type": "http",
"url": "https://knack.usefulapi.io/mcp"
}
}
} [mcp_servers.io-usefulapi-knack] url = "https://knack.usefulapi.io/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-usefulapi-knack": {
"type": "remote",
"url": "https://knack.usefulapi.io/mcp",
"enabled": true
}
}
} openclaw mcp add io-usefulapi-knack --url 'https://knack.usefulapi.io/mcp' --transport streamable-http
mcp_servers:
io-usefulapi-knack:
url: "https://knack.usefulapi.io/mcp" {
"McpServers": {
"io-usefulapi-knack": {
"Transport": "http",
"Url": "https://knack.usefulapi.io/mcp"
}
}
} assistant mcp add io-usefulapi-knack -t streamable-http -u 'https://knack.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-knack": {
"type": "http",
"url": "https://knack.usefulapi.io/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.
- 3 Sept 26 0
- Stability: 0.97 → pass security
- 2 Sept 26 0
- Stability: pass → 0.97 functional
- 1 Sept 26 0
- Stability: 0.97 → pass security
- 31 Aug 26 0
- Stability: pass → 0.97 functional
- 26 Aug 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
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 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
- 4 Aug 26 0
- Authorization: unverified → pass ▲ security
- MCP protocol: unverified → fail ▼ functional
- Endpoint reachability: not serving MCP → reachable ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.27 ▲ functional
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 20 Sept 2026 · Probed https://knack.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 15 Sept 2026 | 14 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 36270d69b01cf45013466fe92a462acf |
| SANs: usefulapi.io, knack.usefulapi.io, *.knack.usefulapi.io | ||||||
| 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 knack.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://knack.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"
Bearer realm="OAuth", resource_metadata="https://knack.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"Protected resource metadata
| Document | https://knack.usefulapi.io/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://knack.usefulapi.io/mcp |
| Authorisation server | https://knack.usefulapi.io |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://knack.usefulapi.io/mcp | Verified | 200 | |
| http (plaintext) | http://knack.usefulapi.io/mcp | Inconclusive | 401 |
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 →
knack_create_record Create a record ~165
MUTATES Knack data — creates a new record in an object. Knack API: POST /objects/{object_key}/records. Provide `fields` as an object keyed by field key, e.g. { "field_1": "Acme", "field_2": 100 }. Auto Increment / Formula / Equation fields are read-only and cannot be set. Returns the created record.
| Name | Type | Req | Description |
|---|---|---|---|
| fields | object | yes | The record's field values keyed by field key, e.g. { "field_1": "Acme", "field_2": 100 }. Auto Increment / Formula / Equation fields are read-only and cannot be written. |
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
No output schema declared.
No examples provided.
knack_delete_record Delete a record ~95
MUTATES Knack data — permanently DELETES a record (irreversible). Knack API: DELETE /objects/{object_key}/records/{record_id}. Knack returns { delete: true } on success.
| Name | Type | Req | Description |
|---|---|---|---|
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
| recordId | string | yes | The record id (a hex string returned by Knack). |
No output schema declared.
No examples provided.
knack_get_application Get application schema ~80
Fetch a Knack application's full schema/metadata — its objects (tables), fields, and scenes. Knack API: GET /applications/{app_id}. Returns the raw JSON as-is. app_id defaults to the configured KNACK_APPLICATION_ID.
| Name | Type | Req | Description |
|---|---|---|---|
| appId | string | – | Optional Knack Application ID; defaults to the configured KNACK_APPLICATION_ID. |
No output schema declared.
No examples provided.
knack_get_record Get a record ~90
Fetch a single record by id. Knack API: GET /objects/{object_key}/records/{record_id}. Returns the bare record (with both field_x and field_x_raw values).
| Name | Type | Req | Description |
|---|---|---|---|
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
| recordId | string | yes | The record id (a hex string returned by Knack). |
No output schema declared.
No examples provided.
knack_list_fields List fields for an object ~113
List the fields of ONE object as [{ key, name, type, required }]. Fetches GET /applications/{app_id} and returns the fields of the object whose key === objectKey (e.g. "object_1"). app_id defaults to the configured KNACK_APPLICATION_ID.
| Name | Type | Req | Description |
|---|---|---|---|
| appId | string | – | Optional Knack Application ID; defaults to the configured KNACK_APPLICATION_ID. |
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
No output schema declared.
No examples provided.
knack_list_objects List objects (tables) ~71
List an application's objects (tables) as a compact array [{ key, name, fieldCount }]. Convenience over GET /applications/{app_id}. app_id defaults to the configured KNACK_APPLICATION_ID.
| Name | Type | Req | Description |
|---|---|---|---|
| appId | string | – | Optional Knack Application ID; defaults to the configured KNACK_APPLICATION_ID. |
No output schema declared.
No examples provided.
knack_list_records List records ~287
List an object's records. Knack API: GET /objects/{object_key}/records. Returns the paged envelope { total_pages, current_page, total_records, records: [...] } as-is. Records carry both field_x (formatted) and field_x_raw (structured) values. Page with page / rows_per_page (max 1000), sort with sort_field / sort_order, and filter with the `filters` object.
| Name | Type | Req | Description |
|---|---|---|---|
| filters | object | – | Optional Knack filter object, JSON-stringified into the `filters` query param. Shape: { "match": "and"|"or", "rules": [{ "field": "field_1", "operator": "is", "value": "Acme" }] }. Common operators:… |
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
| page | integer | – | Page number (default 1). |
| rows_per_page | integer | – | Records per page (1-1000, default 25). |
| sort_field | string | – | Field key to sort by, e.g. "field_25". |
| sort_order | string | – | Sort direction: "asc" or "desc". |
No output schema declared.
No examples provided.
knack_request Raw Knack API GET ~102
Power-user escape hatch: GET any Knack API path not wrapped by a dedicated tool (e.g. view-based reads). READ-ONLY — only GET is allowed. Path starts with a slash (e.g. "/objects/object_1/records"). Knack API: GET {path}.
| Name | Type | Req | Description |
|---|---|---|---|
| path | string | yes | API path starting with a slash, e.g. "/objects/object_1/records". |
| query | object | – | Optional query params object. |
No output schema declared.
No examples provided.
knack_update_record Update a record ~179
MUTATES Knack data — updates a record. Knack API: PUT /objects/{object_key}/records/{record_id}. Provide `fields` as an object keyed by field key; only the included fields change, e.g. { "field_1": "Acme Inc" }. Auto Increment / Formula / Equation fields are read-only. Returns the updated record.
| Name | Type | Req | Description |
|---|---|---|---|
| fields | object | yes | The record's field values keyed by field key, e.g. { "field_1": "Acme", "field_2": 100 }. Auto Increment / Formula / Equation fields are read-only and cannot be written. |
| objectKey | string | yes | The Knack object (table) key, e.g. "object_1". |
| recordId | string | yes | The record id (a hex string returned by Knack). |
No output schema declared.
No examples provided.
What is the io.usefulapi/knack MCP server?
io.usefulapi/knack is an MCP server listed in the public MCP registry as io.usefulapi/knack. Read, create, update and delete records; inspect objects, fields and schema in your Knack database. This page covers its hosted endpoint (https://knack.usefulapi.io/mcp).
Is the io.usefulapi/knack MCP server safe to use?
io.usefulapi/knack scores 85 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 io.usefulapi/knack MCP server expose?
io.usefulapi/knack exposes 9 tools: knack_get_application, knack_list_objects, knack_list_fields, knack_list_records, knack_get_record, and 4 more. Their descriptions and schemas cost roughly 1,182 tokens of context every time the server is loaded.
Does the io.usefulapi/knack MCP server require authentication?
Yes. io.usefulapi/knack asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the io.usefulapi/knack MCP server still maintained?
io.usefulapi/knack is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.