MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Payments & trading

Registrai Arc data

Read-only hourly data on stablecoin apps on Arc: payments, volume, indices, verified builders.

Checks passed
11 / 22

3 failed · 8 not measured

Median response
228 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
13

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
222

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 228 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-06-18, serverInfo.name registrai-arc-data.

  • Pass
    Lists tools

    tools/list returned 13 tools.

  • Pass
    Current protocol

    Negotiated 2025-06-18. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 228 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 228 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    13 of 19 parameters have a description (68%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Fail
    Website matches publisher

    The website host does not match the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-10-16T07:15:01.081041Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Registrai Arc data

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http registrai-arc-data https://builder.registrai.cc/api/mcp

Capabilities

Tools 13

arc_address_label

Who an address on Arc mainnet belongs to: the project or app, the address's role and the source of the label (directory entries, stablecoins, Registrai's chain scan, the contracts the Arc indices count per app). Use this when asked whose contract or address something is on Arc. No label usually means a wallet or an unnamed contract.

Discovered
arc_app

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.

Discovered
arc_app_history

One Arc app's hourly points and activity (payments, paying wallets, new payers, USD) in one index, oldest first.

Discovered
arc_apps

Every 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.

Discovered
arc_apps_daily

USDC received per day by Arc apps and directory projects since mainnet's first day (2026-09-16), counted from every USDC transfer into their contracts, before any index rule (USD, transfers, distinct payers). One app (up to 31 days) or all apps (up to 7 days). Use this when asked how much USDC an app or exchange on Arc receives, or how a project's flows changed since launch.

Discovered
arc_apps_week

Apps on Arc ranked by stablecoin payments received in the last 7 days (USD, payments, new paying wallets) and the hour each was first seen in Registrai's index. Use this when asked which apps on Arc are most used, which accept USDC, or what is new on Arc.

Discovered
arc_ecosystem

Every project in the Arc ecosystem directory (apps, wallets, exchanges, banks, infrastructure, partners) with category and status: live on mainnet, deployed or announced. Use this when asked what exists on Arc, which projects are in a category, or whether a company is on Arc. Not for token prices.

Discovered
arc_entity

One project in the Arc ecosystem directory by slug (slugs come from arc_ecosystem): summary, status with evidence, links, contracts on Arc and sources.

Discovered
arc_index_history

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.

Discovered
arc_indices

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.

Discovered
arc_new_apps

Arc apps first seen in an index after a given hour. Use this when asked what is new on Arc.

Discovered
arc_numbers

Chain-level Arc numbers: USDC and EURC supply, all stablecoins and TVL (from DefiLlama), estimated 24 h stablecoin volume, apps and projects, index closes and a dated timeline, each with its source and date. Use this when asked how big Arc is, how much USDC is on Arc, or Arc's TVL or volume.

Discovered
arc_verified

Arc projects whose builder proof validates against the Arc mainnet builder registry.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected228 ms13