76
A2A
A2A 0.3
v0.1.0
Philanthropy Agent - A2A server looking for crypto donations.
learn-a2a.com
Educates humans on A2A protocol and returns ETH/BTC addresses in an artifact for donations.
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learn-a2a.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
27/100
grade F · 9 criteria
Uptime
accumulating
2/5 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: 27/100
F-grade: card is reachable but fails most operational signals.
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click to collapse breakdown ▴
F
Conformance score: 27/100
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.
Docs →
partial
Protocol version
5/10
Declares pre-1.0 A2A 0.3 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info
JWS signature
0/10
Card is unsigned (most published agents are).
info
Uptime track record
0/15
Only 2 probes 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 →
fail
Verified Identity
0/10
No provider organisation declared. Anonymous agent.
How to earn +10 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
info
Security declaration
0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ 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 | |
|---|---|---|
| 2026-08-20 19:08:42 current | 955404da25d1… |
view → |
Uptime
100.0%
2 direct probes · 30d
Response
37ms
last direct probe
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
| Agent card | https://learn-a2a.com/.well-known/agent-card.json |
Discovered via
a2a_registry_org
Skills · 1 declared · mapped to canonical taxonomy
Philanthropy Agent - A2A server looking for crypto donations.
Educates humans on A2A protocol and returns ETH/BTC addresses in an artifact for donations.
Health · last 2 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.
Agent-Initiated Checkout (AP2)
payments
50 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/learn-a2a.com) [](https://agenstry.com/agents/learn-a2a.com) [](https://agenstry.com/agents/learn-a2a.com) [](https://agenstry.com/agents/learn-a2a.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": "Philanthropy Agent - A2A server looking for crypto donations.",
"description": "Educates humans on A2A protocol and returns ETH/BTC addresses in an artifact for donations.",
"supportedInterfaces": [
{
"url": "https://learn-a2a.com",
"protocolBinding": "HTTP+JSON"
}
],
"version": "0.1.0",
"capabilities": {
"streaming": false,
"pushNotifications": false
},
"defaultInputModes": [
"text/plain"
],
"defaultOutputModes": [
"text/plain",
"application/json"
],
"preferredTransport": "HTTP+JSON",
"protocolVersion": "0.3",
"skills": [],
"url": "https://learn-a2a.com"
}