Attester Oracle
REMOTE · ATTESTER.DEV · SCANNED SEP 20
Verify PyPI and npm packages, symbols, and version diffs against real artifacts. Free, no account.
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 Security74
- 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 is enforced; there's no plaintext access path. View diagnostics → Pass
- 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 Usability68
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 516 tokens (~129/item across 4 items; 4 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 Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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
How do I install the Attester Oracle MCP server?
Attester Oracle is a hosted endpoint at https://attester.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 · attester.dev
claude mcp add --transport http maminihds-attester-mcp 'https://attester.dev/mcp/'
{
"mcpServers": {
"maminihds-attester-mcp": {
"url": "https://attester.dev/mcp/"
}
}
} {
"servers": {
"maminihds-attester-mcp": {
"type": "http",
"url": "https://attester.dev/mcp/"
}
}
} [mcp_servers.maminihds-attester-mcp] url = "https://attester.dev/mcp/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"maminihds-attester-mcp": {
"type": "remote",
"url": "https://attester.dev/mcp/",
"enabled": true
}
}
} openclaw mcp add maminihds-attester-mcp --url 'https://attester.dev/mcp/' --transport streamable-http
mcp_servers:
maminihds-attester-mcp:
url: "https://attester.dev/mcp/" {
"McpServers": {
"maminihds-attester-mcp": {
"Transport": "http",
"Url": "https://attester.dev/mcp/"
}
}
} assistant mcp add maminihds-attester-mcp -t streamable-http -u 'https://attester.dev/mcp/'
{
"mcpServers": {
"maminihds-attester-mcp": {
"type": "http",
"url": "https://attester.dev/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.
- 9 Sept 26 +7
- HSTS header: unverified → fail ▼ security
- Authorization: unverified → partial ▲ security
- 8 Sept 26 −7
- HSTS header: fail → unverified ▼ security
- Authorization: partial → unverified ▼ security
- 26 Aug 26 +2
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 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
- 7 Aug 26 0
- The server no longer declares the “experimental” capability functional
- 31 Jul 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
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://attester.dev/mcp/
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=attester.dev | CN=YE1,O=Let's Encrypt,C=US | 18 Sept 2026 | 17 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 6f211d8ad495f14e79d3b36ddf3c7b32602 |
| SANs: attester.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| 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 attester.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| attester.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 |
|---|---|
| x-content-type-options | nosniff |
| referrer-policy | no-referrer |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://attester.dev/mcp/ | Verified | 200 | |
| http (plaintext) | http://attester.dev/mcp/ | HTTPS enforced | 308 | https://attester.dev/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 →
attester_package_exists Package Exists (free oracle) ~103
Does this PyPI or npm package name really exist? Deterministic answer from the real published artifact, signed, with typosquat-adjacency flags on misses. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.
| Name | Type | Req | Description |
|---|---|---|---|
| ecosystem | string | yes | – |
| name | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
attester_symbol_exists Symbol Exists (free oracle) ~111
Does a function, class, or constant exist in this PyPI or npm package? Answer from the indexed artifact, with closest-match suggestions on misses. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.
| Name | Type | Req | Description |
|---|---|---|---|
| ecosystem | string | yes | – |
| package | string | yes | – |
| symbol | string | yes | – |
| version | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
attester_symbol_signature Symbol Signature (free oracle) ~107
Exact signature, structured params, docstring summary, and deprecation status for one symbol, resolved at a pinned version when given. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.
| Name | Type | Req | Description |
|---|---|---|---|
| ecosystem | string | yes | – |
| package | string | yes | – |
| symbol | string | yes | – |
| version | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
attester_version_diff Version Diff (free oracle) ~117
Symbol-level diff between two pinned versions of one package: added, removed, changed signatures, new deprecations, and a breaking/additive/neutral classification. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.
| Name | Type | Req | Description |
|---|---|---|---|
| ecosystem | string | yes | – |
| from_version | string | yes | – |
| package | string | yes | – |
| to_version | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
What is the Attester Oracle MCP server?
Attester Oracle is an MCP server listed in the public MCP registry as io.github.maminihds/attester-mcp. Verify PyPI and npm packages, symbols, and version diffs against real artifacts. Free, no account. This page covers its hosted endpoint (https://attester.dev/mcp/).
Is the Attester Oracle MCP server safe to use?
Attester Oracle scores 82 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 Attester Oracle MCP server expose?
Attester Oracle exposes 4 tools: attester_package_exists, attester_symbol_exists, attester_symbol_signature, attester_version_diff. Their descriptions and schemas cost roughly 438 tokens of context every time the server is loaded.
Does the Attester Oracle MCP server require authentication?
No. We connected to Attester Oracle without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Attester Oracle MCP server still maintained?
Attester Oracle 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.