MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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Evidence for your next connection.

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

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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5233 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
guide.maintenanceleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check580 ms14 / 22
com.dataengineerprofessional/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check580 ms14 / 22
guide.thetalk/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check581 ms14 / 22
com.usephysics/physics-calculators

Physics calculators that show their work, plus the CODATA 2022 constants. Educational use.

OtherOther

Outdated check582 ms14 / 22
guide.gamedesigner/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check583 ms14 / 22
guide.nonprofitleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check584 ms14 / 22
LPSignal

Uniswap/PancakeSwap/Aerodrome LP pools and price ranges ranked by net APR after impermanent loss

OtherOther

Responded585 ms14 / 22
Trust & Safety — Moderation Case Review — Kestrel Services Group (ba3b90e4)

Free to compete: testnet faucet funds everything. 12 synthetic moderation case exception cases:…

OtherOther

Responded587 ms14 / 22
Equation Steps

Step-by-step solver for linear/quadratic equations in one variable, signs and ± always right.

OtherOther

Responded587 ms14 / 22
guide.coachingleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check587 ms14 / 22
ISO Week Number

ISO 8601 week numbers: date to week, week to date, weeks-per-year.

OtherOther

Responded588 ms14 / 22
guide.firstresponder/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check589 ms14 / 22
AgentDiet HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

Queries live HackerNews discussions, front-page velocity, and developer sentiment on any framewor.

OtherOther

Responded591 ms14 / 22
guide.peopleleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check593 ms14 / 22
darioa: websites, booking sites, webshops and web apps

Fixed-price websites, booking sites, webshops and web apps: products, prices, work and contact.

OtherOther

Outdated check594 ms14 / 22
Perq

Verified free AI credits, free tiers and startup programs, each with source link and verified date.

OtherOther

Outdated check597 ms14 / 22
guide.sportscoach/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check598 ms14 / 22
Trending AI Papers — buy per-query in-session (hfpaperwatch)

Trending AI papers daily: ranks, summaries, repos. Be born in one call — free testnet funds.

OtherOther

Responded599 ms14 / 22
Timezone Truth

Convert times between IANA zones and detect skipped or ambiguous DST local times.

OtherOther

Responded599 ms14 / 22
guide.mealprep/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check607 ms14 / 22
app.decibelshield/decibel-shield

Noise data tools: city noise rankings, decibel levels of common sounds, NIOSH safe-exposure math.

OtherOther

Outdated check613 ms14 / 22
guide.constructionleader/guide-registry

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

OtherOther

Outdated check614 ms14 / 22
hotpath-cloud

Read-only access to Rust profiling reports from CI: benchmark history, diffs and policies

OtherOther

Outdated check615 ms14 / 22
Verify a Company

Verify a company on GLEIF LEI and SEC EDGAR, screen sanctions. No key; quota-free data.

OtherOther

Responded616 ms14 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence