Registrai Arc data
REMOTE · BUILDER.REGISTRAI.CC
Read-only hourly data on stablecoin apps on Arc: payments, volume, indices, verified builders.
Available components
Last scanned (10 hours ago)
Scores higher than 58% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Crypto and Web3
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 Usability67
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1350 tokens (~103/item across 13 items; 13 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage82
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 45% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 13 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 14 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
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.
- 18 Oct 26 +1
- Tool “arc_app” rewrote its description, which is the text the model reads security
- Tool “arc_app_history” rewrote its description, which is the text the model reads security
- Tool “arc_apps” rewrote its description, which is the text the model reads security
- Tool “arc_index_history” rewrote its description, which is the text the model reads security
- Tool “arc_indices” rewrote its description, which is the text the model reads security
- Tool “arc_new_apps” rewrote its description, which is the text the model reads security
- Tool “arc_verified” rewrote its description, which is the text the model reads security
- Tool “arc_app” changed its title: Arc app: detail cosmetic
- Tool “arc_app_history” changed its title: Arc app: hourly history cosmetic
- Tool “arc_app_history_deep” changed its title: Arc app: full history cosmetic
- Tool “arc_apps” changed its title: Arc stablecoin apps cosmetic
- Tool “arc_contract” changed its title: Arc contract facts cosmetic
- Tool “arc_events” changed its title: Arc watch-feed events cosmetic
- Tool “arc_index_history” changed its title: Arc index: hourly history cosmetic
- Tool “arc_index_history_deep” changed its title: Arc index: full history cosmetic
- Tool “arc_indices” changed its title: Arc indices: latest cosmetic
- Tool “arc_members_day” changed its title: Arc apps: one day cosmetic
- Tool “arc_new_apps” changed its title: Arc apps: newly seen cosmetic
- Tool “arc_project_scope” changed its title: Arc project contracts cosmetic
- Tool “arc_verified” changed its title: Arc builders: verified cosmetic
- 17 Oct 26 0
- Schema quality: 75 → 97 ▼ functional
- Tool coverage: 73% → 45% ▼ functional
- Stability: unverified → 0.03 ▲ functional
- New tool “arc_app_history_deep” functional
- New tool “arc_contract” functional
- New tool “arc_events” functional
- New tool “arc_index_history_deep” functional
- New tool “arc_members_day” functional
- New tool “arc_project_scope” functional
- 16 Oct 26 67
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 18 Oct 2026 · Probed https://builder.registrai.cc/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=builder.registrai.cc | CN=WE1,O=Google Trust Services,C=US | 24 Sept 2026 | 23 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | ab113e210eb4be8133eac1520262ade |
| SANs: builder.registrai.cc | ||||||
| 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 builder.registrai.cc. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| cc. | present | 12593 | 13 | Verified |
| registrai.cc. | 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://builder.registrai.cc/api/mcp | Verified | 200 | |
| http (plaintext) | http://builder.registrai.cc/api/mcp | HTTPS enforced | 301 | https://builder.registrai.cc/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 →
arc_app Arc app: detail ~62
One Arc app by id (e.g. domain:archery.wtf, integration:uniswap; ids come from arc_apps): last 24 h, contracts count, verified status and the last 7 days of hourly rows.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
No output schema declared.
No examples provided.
arc_app_history Arc app: hourly history ~137
One Arc app's hourly points and activity (payments, paying wallets, new payers, USD) in one index, oldest first.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | First hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
| id | string | yes | – |
| index | string | yes | abi = builder apps, aii = integrations, aei = both plus the Arc base layer |
| to | string | – | Last hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
No output schema declared.
No examples provided.
arc_app_history_deep Arc app: full history ~167
One app's hourly points and activity for any window. Paid via x402 (USDC on Arc): $0.002 via Circle Gateway or $0.01 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | First hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
| id | string | yes | – |
| index | string | yes | abi = builder apps, aii = integrations, aei = both plus the Arc base layer |
| to | string | – | Last hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
No output schema declared.
No examples provided.
arc_apps Arc stablecoin apps ~86
Every stablecoin app on Arc in the indices with its last 24 h of stablecoin payments (USDC, EURC) and USD volume, verified status and first-seen hour. Use this when asked which apps use USDC on Arc, or which are most used. Not for token prices, DeFi TVL or chains other than Arc.
| Name | Type | Req | Description |
|---|---|---|---|
| sort | string | – | – |
No output schema declared.
No examples provided.
arc_contract Arc contract facts ~77
Facts for one contract on Arc: label, project, recent events and USDC balance. Paid via x402 (USDC on Arc): $0.005 via Circle Gateway or $0.01 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
No output schema declared.
No examples provided.
arc_events Arc watch-feed events ~156
Watch-feed events on Arc: deploys, upgrades, control changes, pauses and large outflows, labelled to projects. Paid via x402 (USDC on Arc): $0.002 via Circle Gateway or $0.01 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| contract | string | – | – |
| kind | string | – | – |
| labelled | string | – | – |
| limit | string | – | – |
| min_balance | string | – | – |
| min_project_usdc_24h | string | – | – |
| project | string | – | – |
| since_block | string | – | – |
| since_ts | string | – | – |
| until_block | string | – | – |
No output schema declared.
No examples provided.
arc_index_history Arc index: hourly history ~138
Hourly closes of one Arc index, oldest first (at most 744 hours per call). Use this for charts or changes over a window of up to 31 days.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | First hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
| index | string | yes | abi = builder apps, aii = integrations, aei = both plus the Arc base layer |
| to | string | – | Last hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
No output schema declared.
No examples provided.
arc_index_history_deep Arc index: full history ~168
Hourly closes of one Arc index for any window (beyond the free 744 h). Paid via x402 (USDC on Arc): $0.002 via Circle Gateway or $0.01 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | First hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
| index | string | yes | abi = builder apps, aii = integrations, aei = both plus the Arc base layer |
| to | string | – | Last hour (inclusive). An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
No output schema declared.
No examples provided.
arc_indices Arc indices: latest ~53
Latest hourly close of the Arc Builders, Integrations and Ecosystem indices (ABI, AII, AEI), their 24 h change base and decay parameters. Use this when asked how Arc app activity is trending overall.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
arc_members_day Arc apps: one day ~85
Every member's hourly rows and the ABI, AII and AEI closes for one UTC day. Paid via x402 (USDC on Arc): $0.03 via Circle Gateway or $0.05 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | yes | YYYY-MM-DD (UTC). |
No output schema declared.
No examples provided.
arc_new_apps Arc apps: newly seen ~93
Arc apps first seen in an index after a given hour. Use this when asked what is new on Arc.
| Name | Type | Req | Description |
|---|---|---|---|
| index | string | yes | abi = builder apps, aii = integrations, aei = both plus the Arc base layer |
| since | string | yes | Members first seen after this hour. An ISO hour close, e.g. 2026-10-14T19:00:00Z. |
No output schema declared.
No examples provided.
arc_project_scope Arc project contracts ~81
Every contract attributed to one project. Paid via x402 (USDC on Arc): $0.01 via Circle Gateway or $0.02 standard. Call once to get the payment requirements, then retry with params._meta["x402/payment"].
| Name | Type | Req | Description |
|---|---|---|---|
| limit | string | – | – |
| offset | string | – | – |
| source | string | yes | – |
No output schema declared.
No examples provided.
arc_verified Arc builders: verified ~22
Arc projects whose builder proof validates against the Arc mainnet builder registry.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Registrai Arc data MCP server?
Registrai Arc data is a hosted endpoint at https://builder.registrai.cc/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 · builder.registrai.cc
claude mcp add --transport http cc-registrai-arc-data 'https://builder.registrai.cc/api/mcp'
What is the Registrai Arc data MCP server?
Registrai Arc data is an MCP server listed in the public MCP registry as cc.registrai/arc-data. Read-only hourly data on stablecoin apps on Arc: payments, volume, indices, verified builders. This page covers its hosted endpoint (https://builder.registrai.cc/api/mcp).
Is the Registrai Arc data MCP server safe to use?
Registrai Arc data scores 68 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 Registrai Arc data MCP server expose?
Registrai Arc data exposes 13 tools: arc_indices, arc_index_history, arc_apps, arc_app, arc_app_history, and 8 more. Their descriptions and schemas cost roughly 1,325 tokens of context every time the server is loaded.
Does the Registrai Arc data MCP server require authentication?
No. We connected to Registrai Arc data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Registrai Arc data MCP server still maintained?
Registrai Arc data is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.