88
A2A
A2A 1.0
v1.0.0
888a2a-lite A2A Gateway
a2a.david888.com
· 888a2a-lite
A2A HTTP+JSON Gateway for registered Agents
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Verify the domain
a2a.david888.com via a single DNS TXT record to add the
verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Trust score
39/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →
Dispute or improve this rating
F
Conformance score: 39/100
F-grade: card is reachable but fails most operational signals.
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click to collapse breakdown ▴
F
Conformance score: 39/100
F-grade: card is reachable but fails most operational signals.
pass
Valid AgentCard
10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail
Live JSON-RPC
2/25
Card is valid but has no .url field.
How to earn +23 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
pass
Protocol version
10/10
Declares A2A 1.0 with supportedInterfaces[] (current v1 card shape).
info
JWS signature
0/10
Card is unsigned (most published agents are).
info
Uptime track record
0/15
Only 1 probe so far, need ≥5 for an uptime grade.
partial
Skill declaration
6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial
Verified Identity
5/10
Provider declared: 888a2a-lite (https://a2a.david888.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass
Freshness + modern flags
4/5
seen in upstream source within 0d
partial
Security declaration
2/5
Declares 1 security scheme(s) but none use PKCE or mTLS.
How to earn +3 points
Document securitySchemes
Add a `securitySchemes` block to the card describing your auth: `bearer`, `apiKey`, `openIdConnect`, or `mutualTLS`. Routers refuse to call agents that declare no auth model.
Docs →
⚠ Card drift detected. This agent's
agent-card.json changed within the last 7 days. We track these so downstream callers can react.
Activity (audit trail)
last 24h · 0 invocations Public aggregate · no PII recordedNothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.
Card history
1 snapshot Every change toagent-card.json
| Captured | Hash | |
|---|---|---|
| 2026-09-09 08:22:20 current | a36e13deabc0… |
view → |
Uptime
accumulating
1 direct probes · 30d
Response
255ms
last direct probe
Skills
1
declared
Streaming
✓
SSE-capable
Endpoints
| Agent card | https://a2a.david888.com/.well-known/agent-card.json |
| Provider | https://a2a.david888.com |
Discovered via
manifests
Skills · 1 declared · mapped to canonical taxonomy
Health · last 1 probes
Cheaper or better alternatives per-skill
↑ 1 higher quality
For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.
Text-to-3D
hf_tasks
37 other agents serve this
Similar agents embedding-nearest
Embed your Agenstry badge
Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.
Markdown / HTML snippets
[](https://agenstry.com/agents/a2a.david888.com) [](https://agenstry.com/agents/a2a.david888.com) [](https://agenstry.com/agents/a2a.david888.com) [](https://agenstry.com/agents/a2a.david888.com)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"name": "888a2a-lite A2A Gateway",
"description": "A2A HTTP+JSON Gateway for registered Agents",
"supportedInterfaces": [
{
"url": "https://a2a.david888.com/a2a/v1",
"protocolBinding": "HTTP+JSON",
"protocolVersion": "1.0"
}
],
"provider": {
"url": "https://a2a.david888.com",
"organization": "888a2a-lite"
},
"version": "1.0.0",
"capabilities": {
"streaming": true
},
"securitySchemes": {
"bearerAuth": {
"httpAuthSecurityScheme": {
"scheme": "bearer",
"bearerFormat": "AgentToken"
}
}
},
"securityRequirements": [
{
"schemes": {
"bearerAuth": {
"list": []
}
}
}
],
"defaultInputModes": [
"text/plain"
],
"defaultOutputModes": [
"text/plain"
],
"skills": [
{
"id": "text-relay",
"name": "Text relay",
"description": "Durable text Message delivery through the Hub",
"tags": [
"text",
"relay"
],
"inputModes": [
"text/plain"
],
"outputModes": [
"text/plain"
]
}
]
}