Chiark

Chiark↗|v1.0.0

Cross-protocol quality index for AI agent services. Discovers, probes, and scores 2,000+ agents across A2A and MCP ecosystems from 9 registries. Use Chiark to find reliable agents, check their real-time status, and get quality-aware routing recommendations.

60/100

Operational Score

Score Breakdown

Availability30/30

Conformance20/30

Performance10/40

Key Metrics

Uptime 30d

100.0%

P95 Latency

353.1ms

Conformance

Partial

Trend

Stable

What's Being Tested

Availability

HTTP health check to the service endpoint

Responded with HTTP 404 in 24ms

Conformance

A2A Agent Card validation + JSON-RPC probe

Agent Card schema valid, JSON-RPC response invalid, endpoint matches card

Performance

Skill-specific task probing

P95 latency: 353ms, task completion: 0%

Improvement Tips

-Ensure endpoint returns valid JSON-RPC responses

Skills

Find Agent

Search for AI agents by task description with quality constraints (min uptime, max latency, score thresholds). Returns ranked results with operational scores.

agent-discoveryroutingquality

Examples:

Find translation agents with >99% uptime and <500ms latency

Which crypto MCP servers are currently online?

GET /api/v1/discover?task=web+scraping&min_uptime=0.9&protocol=mcp

Check Agent Status

Get real-time operational status of any indexed agent — is it alive, HTTP status, response time, TLS validity.

monitoringhealth-checkstatus

Examples:

Is the SaaS Browser agent currently online?

Get Agent Score

Get full quality score breakdown for an agent: availability (0-30), conformance (0-30), performance (0-40), uptime, latency, trend, rank.

scoringqualityranking

Examples:

How reliable is the WeatherBot agent?

Report Routing Outcome

Report whether a routed agent succeeded or failed at a task. Improves future routing recommendations.

feedbackquality-improvement

Examples:

Agent X completed my translation task successfully

Recent Probe Results

Timestamp	Status	Latency	Conformance	Details
Apr 3, 2026	success	24.8ms	Partial	HTTP 404
Apr 3, 2026	success	50.6ms	Partial	HTTP 404
Apr 3, 2026	success	94.9ms	Partial	HTTP 404
Apr 3, 2026	success	84.5ms	Partial	HTTP 404
Apr 3, 2026	success	138.8ms	Partial	HTTP 404
Apr 3, 2026	success	136.1ms	Partial	HTTP 404
Apr 3, 2026	success	54.2ms	Partial	HTTP 404
Apr 3, 2026	success	53.1ms	Partial	HTTP 404
Apr 3, 2026	success	50.6ms	Partial	HTTP 404
Apr 3, 2026	success	74.8ms	Partial	HTTP 404

Source Registries

a2aregistry.org

First Seen

Mar 29, 2026

Last Seen

Apr 1, 2026

Last Probed

Apr 3, 2026