ArcID
REMOTE · MCP.ARCUSID.COM · 2 COMPONENTS · SCANNED SEP 28
Look up AI agents on Arc: ERC-8004 identity, feedback, validations and USDC-backed trust scores.
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 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 Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 496 tokens (~82/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 Management3
- Stability observed for 1 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
How do I install the ArcID MCP server?
ArcID is a hosted endpoint at https://mcp.arcusid.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 · mcp.arcusid.com
claude mcp add --transport http arcusid-arcid-mcp 'https://mcp.arcusid.com/mcp'
{
"mcpServers": {
"arcusid-arcid-mcp": {
"url": "https://mcp.arcusid.com/mcp"
}
}
} {
"servers": {
"arcusid-arcid-mcp": {
"type": "http",
"url": "https://mcp.arcusid.com/mcp"
}
}
} [mcp_servers.arcusid-arcid-mcp] url = "https://mcp.arcusid.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"arcusid-arcid-mcp": {
"type": "remote",
"url": "https://mcp.arcusid.com/mcp",
"enabled": true
}
}
} openclaw mcp add arcusid-arcid-mcp --url 'https://mcp.arcusid.com/mcp' --transport streamable-http
mcp_servers:
arcusid-arcid-mcp:
url: "https://mcp.arcusid.com/mcp" {
"McpServers": {
"arcusid-arcid-mcp": {
"Transport": "http",
"Url": "https://mcp.arcusid.com/mcp"
}
}
} assistant mcp add arcusid-arcid-mcp -t streamable-http -u 'https://mcp.arcusid.com/mcp'
{
"mcpServers": {
"arcusid-arcid-mcp": {
"type": "http",
"url": "https://mcp.arcusid.com/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.
- 28 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
- 27 Sept 26 66
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 28 Sept 2026 · Probed https://mcp.arcusid.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=arcusid.com | CN=WE1,O=Google Trust Services,C=US | 27 Sept 2026 | 26 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 66053441760b7a150ec4aa4f10a669c6 |
| SANs: arcusid.com, mcp.arcusid.com, *.mcp.arcusid.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 mcp.arcusid.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| arcusid.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://mcp.arcusid.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.arcusid.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_agent Get agent ~60
Full ArcID record for one agent: profile, owner, agent wallet, reputation summary, validations, trust score and the USDC settlement evidence behind it.
| Name | Type | Req | Description |
|---|---|---|---|
| agent_id | integer | yes | ERC-8004 agent ID (token ID in the Identity Registry) |
No output schema declared.
No examples provided.
get_agent_feedback Get agent feedback ~107
Feedback left for an agent in the ERC-8004 Reputation Registry, newest first. Each entry is classified (receipt, rating, metric, self, revoked) with a normalised 0-100 rating where applicable.
| Name | Type | Req | Description |
|---|---|---|---|
| agent_id | integer | yes | ERC-8004 agent ID (token ID in the Identity Registry) |
| limit | integer | – | Results per page, 1-100 (default 50) |
| page | integer | – | Page number, starting at 1 |
No output schema declared.
No examples provided.
get_agent_validations Get agent validations ~51
The latest 100 validation requests and responses for an agent from the ERC-8004 Validation Registry.
| Name | Type | Req | Description |
|---|---|---|---|
| agent_id | integer | yes | ERC-8004 agent ID (token ID in the Identity Registry) |
No output schema declared.
No examples provided.
get_indexer_health Get indexer health ~33
How far the ArcID indexer is behind the Arc chain head. Check this when results look empty or stale.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_registry_stats Get registry stats ~29
Totals across the ArcID index: agents, owners, feedback, validations and settled USDC.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
search_agents Search agents ~156
Search the ArcID directory of AI agents registered on Arc (ERC-8004). Supports full-text search over names and descriptions, filtering by owner address, and sorting by trust score, feedback count or settled USDC.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per page, 1-100 (default 24) |
| owner | string | – | Owner wallet address |
| page | integer | – | Page number, starting at 1 |
| query | string | – | Full-text search (prefix match on words) |
| readable_only | boolean | – | Only agents with a readable profile (name, description). Default true; set false to include unnamed agents |
| sort | string | – | Default: relevance when a query is given, otherwise newest |
No output schema declared.
No examples provided.
What is the ArcID MCP server?
ArcID is an MCP server listed in the public MCP registry as io.github.arcusid/arcid-mcp. Look up AI agents on Arc: ERC-8004 identity, feedback, validations and USDC-backed trust scores. This page covers its hosted endpoint (https://mcp.arcusid.com/mcp).
Is the ArcID MCP server safe to use?
ArcID scores 66 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 ArcID MCP server expose?
ArcID exposes 6 tools: search_agents, get_agent, get_agent_feedback, get_agent_validations, get_registry_stats, get_indexer_health. Their descriptions and schemas cost roughly 436 tokens of context every time the server is loaded.
Does the ArcID MCP server require authentication?
No. We connected to ArcID without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the ArcID MCP server still maintained?
ArcID is still listed as active in the MCP registry. We last reached this channel on 28 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.