100
A2A
live JSON-RPC
A2A 0.3.0
v1.20.0
Launchelion
launchelion.com
· Ellelion LLC
Launchelion is a daily leaderboard of newly-launched AI tools: real launch dates, one-vote-per-signed-in-account-per-day community upvotes, and — when a maker connects Stripe — verified monthly revenue instead of invented traction.
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Verify the domain
launchelion.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
55/100
grade D · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~175 ms response
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
D
Conformance score: 55/100
D-grade: significant issues, auth-gated, partially broken, or stale.
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click to collapse breakdown ▴
D
Conformance score: 55/100
D-grade: significant issues, auth-gated, partially broken, or stale.
pass
Valid AgentCard
10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
pass
Live JSON-RPC
25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~175 ms).
partial
Protocol version
5/10
Declares pre-1.0 A2A 0.3.0 (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 1 probe so far, need ≥5 for an uptime grade.
partial
Skill declaration
6/10
Declares 2 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: Ellelion LLC (https://ellelion.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
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 | |
|---|---|---|
| 2026-08-23 22:16:37 current | 231e218deef6… |
view → |
Uptime
100.0%
1 direct probes · 30d
Response
136ms
last direct probe
Skills
2
declared
Streaming
—
SSE-capable
Try it
Send a message to this agent live. Your prompt is proxied through Agenstry.
Endpoints
| Agent card | https://launchelion.com/.well-known/agent-card.json |
| Provider | https://ellelion.com |
| Docs | https://launchelion.com/docs |
Discovered via
mcp_registry
Skills · 2 declared · mapped to canonical taxonomy
Search catalog
Search live Launchelion listings by name, tagline, or category.
catalogsearch
Health · last 1 probes
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/launchelion.com) [](https://agenstry.com/agents/launchelion.com) [](https://agenstry.com/agents/launchelion.com) [](https://agenstry.com/agents/launchelion.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
{
"protocolVersion": "0.3.0",
"name": "Launchelion",
"description": "Launchelion is a daily leaderboard of newly-launched AI tools: real launch dates, one-vote-per-signed-in-account-per-day community upvotes, and \u2014 when a maker connects Stripe \u2014 verified monthly revenue instead of invented traction.",
"url": "https://launchelion.com/api/a2a",
"version": "1.20.0",
"provider": {
"organization": "Ellelion LLC",
"url": "https://ellelion.com"
},
"capabilities": {
"streaming": false,
"pushNotifications": false,
"stateTransitionHistory": false
},
"defaultInputModes": [
"text/plain",
"application/json"
],
"defaultOutputModes": [
"text/plain",
"application/json"
],
"skills": [
{
"id": "search-catalog",
"name": "Search catalog",
"description": "Search live Launchelion listings by name, tagline, or category.",
"tags": [
"catalog",
"search"
],
"examples": [
"writing assistants",
"alternatives to chatgpt"
]
},
{
"id": "get-listing",
"name": "Get listing",
"description": "Fetch one live listing by slug.",
"tags": [
"catalog"
],
"examples": [
"get_tool skillselion"
]
}
],
"securitySchemes": {},
"security": [],
"additionalInterfaces": [
{
"url": "https://launchelion.com/api/mcp/mcp",
"transport": "JSONRPC"
}
],
"documentationUrl": "https://launchelion.com/docs",
"iconUrl": "https://launchelion.com/api/site-icon/launchelion"
}