OTInstaller Registry
REMOTE · API.OTINSTALLER.COM
Read-only search of the OTInstaller registry of OSINT tools and guides, with consent classes.
Available components
Last scanned (6 hours ago)
Scores higher than 58% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Security
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 Usability65
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 697 tokens (~116/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 Management50
- Stability observed for 15 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 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.
- 5 Nov 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.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 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.
- 25 Oct 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.
- 23 Oct 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.
- 22 Oct 26 0
- Stability: unverified → 0.03 ▲ 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 5 Nov 2026 · Probed https://api.otinstaller.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=otinstaller.com | CN=WE1,O=Google Trust Services,C=US | 20 Oct 2026 | 18 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | d5e40dcce3779f79138ce03838b44c1e |
| SANs: otinstaller.com, api.otinstaller.com, *.api.otinstaller.com | ||||||
| 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 api.otinstaller.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| otinstaller.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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.otinstaller.com/mcp | Verified | 200 | |
| http (plaintext) | http://api.otinstaller.com/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 →
get_tool Get a tool ~73
A tool's inputs, outputs, API keys, network access and ethics flags, the consent class `ot mcp` will put a run in, what a run does in plain words, and how to install and run it with ot.
| Name | Type | Req | Description |
|---|---|---|---|
| tool | string | yes | the tool, namespace/name or namespace/name@version |
No output schema declared.
No examples provided.
list_types List input and entity types ~37
The input types tools take, the entity types they find, the categories, and which input types each entity type can feed (the pivot map).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
read_guide Read a guide page ~65
One page of a guide, as Markdown, with the list of its pages and the tools it uses.
| Name | Type | Req | Description |
|---|---|---|---|
| guide | string | yes | the guide, namespace/name or namespace/name@version |
| page | string | – | the page path from pages; the first page by default |
No output schema declared.
No examples provided.
search_guides Search guides ~95
Search the registry's investigation guides (methods, checklists, references) by words, target type or level.
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | string | – | next_cursor from the previous page |
| input_type | string | – | only guides about this target type |
| level | string | – | beginner, intermediate or advanced |
| limit | integer | – | results per page (default 20) |
| query | string | – | words to search for |
No output schema declared.
No examples provided.
search_tools Search tools ~205
Search the registry's OSINT tools by words, the input type they take, the entity type they find, or category. passive_only keeps the tools ot runs without asking the person.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | only this category, such as domain-dns or social-media |
| cursor | string | – | next_cursor from the previous page |
| input_type | string | – | only tools that take this input type (email, username, domain, ip, url, phone, ...); list_types lists them |
| limit | integer | – | results per page (default 20) |
| no_keys | boolean | – | only tools that need no API key |
| output_type | string | – | only tools that find this entity type |
| passive_only | boolean | – | only tools that run offline, touch no target and collect no personal data |
| query | string | – | words to search for in names, summaries and tags |
| runtime | string | – | docker or pipx |
No output schema declared.
No examples provided.
suggest_pivots Suggest pivots ~55
For entity types found so far (a subdomain, an account, an email ...), the tools that take them as input, best first.
| Name | Type | Req | Description |
|---|---|---|---|
| entity_types | array | yes | entity types, as list_types lists them |
No output schema declared.
No examples provided.
How do I install the OTInstaller Registry MCP server?
OTInstaller Registry is a hosted endpoint at https://api.otinstaller.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 · api.otinstaller.com
claude mcp add --transport http com-otinstaller-registry 'https://api.otinstaller.com/mcp'
What is the OTInstaller Registry MCP server?
OTInstaller Registry is an MCP server listed in the public MCP registry as com.otinstaller/registry. Read-only search of the OTInstaller registry of OSINT tools and guides, with consent classes. This page covers its hosted endpoint (https://api.otinstaller.com/mcp).
Is the OTInstaller Registry MCP server safe to use?
OTInstaller Registry scores 72 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 OTInstaller Registry MCP server expose?
OTInstaller Registry exposes 6 tools: search_tools, get_tool, list_types, suggest_pivots, search_guides, read_guide. Their descriptions and schemas cost roughly 530 tokens of context every time the server is loaded.
Does the OTInstaller Registry MCP server require authentication?
No. We connected to OTInstaller Registry without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the OTInstaller Registry MCP server still maintained?
OTInstaller Registry is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.