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Trust score
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →
Dispute or improve this rating
C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
click to expand breakdown ▾
click to collapse breakdown ▴
C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
n/a
Agent card
n/a
Not applicable: a paid API listed by agentic.market. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
partial
Live endpoint
15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
n/a
Protocol version
n/a
Not applicable: no A2A agent card served.
n/a
JWS signature
n/a
Not applicable: no A2A agent card served.
n/a
Uptime track record
n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a
Skill declaration
n/a
Not applicable: no A2A agent card served.
partial
Verified Identity
5/10
Provider declared: audio-calc.x402tookit.com (https://audio-calc.x402tookit.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
n/a
Security declaration
n/a
Not applicable: no A2A agent card served.
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.
Listing history
1 snapshot Every change to the catalogue entry| Captured | Hash | Snapshot |
|---|---|---|
| 2026-10-21 05:04:14 current | 1afa4b6b2c8a… |
view → |
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
From $0.0200 per call
| Endpoint | Price | Currency |
|---|---|---|
https://audio-calc.x402tookit.com/dbfs
|
0.02 | USDC |
https://audio-calc.x402tookit.com/db-sum
|
0.02 | USDC |
https://audio-calc.x402tookit.com/bit-depth
|
0.02 | USDC |
https://audio-calc.x402tookit.com/bitrate-size
|
— | USDC |
https://audio-calc.x402tookit.com/buffer-latency
|
— | USDC |
https://audio-calc.x402tookit.com/interval-ratio
|
— | USDC |
https://audio-calc.x402tookit.com/lufs-math
|
— | USDC |
https://audio-calc.x402tookit.com/room-modes
|
— | USDC |
https://audio-calc.x402tookit.com/sample-rate
|
— | USDC |
https://audio-calc.x402tookit.com/sound-wavelength
|
— | USDC |
https://audio-calc.x402tookit.com/spl-distance
|
— | USDC |
https://audio-calc.x402tookit.com/tuning-temperament
|
— | USDC |
Try it ↗
Opens the operator's playground / docs in a new tab.
Settlement wallet:
0xb531320805c5bed1d46aeadcf4f008fdf172dbda on Base
· basescan ↗
Listed by facilitators
Coinbase CDP · 12
| Agent card | https://audio-calc.x402tookit.com |
| Provider | https://audio-calc.x402tookit.com |
| Docs | https://audio-calc.x402tookit.com |
Discovered via
agentic_market
recrawl_paid
Health · last 1 probes
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[](https://agenstry.com/agents/audio-calc.x402tookit.com) [](https://agenstry.com/agents/audio-calc.x402tookit.com) [](https://agenstry.com/agents/audio-calc.x402tookit.com) [](https://agenstry.com/agents/audio-calc.x402tookit.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
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},
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"url": "https://audio-calc.x402tookit.com/db-sum",
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"parameters": [
{
"group": "query",
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"example": "60,60,70",
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],
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},
{
"url": "https://audio-calc.x402tookit.com/dbfs",
"description": "Convert between linear amplitude and dBFS, and get the RMS level and crest factor of a sine, square, triangle or sawtooth.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
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},
"method": "GET",
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"parameters": [
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{
"group": "query",
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},
{
"url": "https://audio-calc.x402tookit.com/interval-ratio",
"description": "Convert a frequency ratio (3:2) to cents and semitones or back, name just and Pythagorean intervals and commas, apply to Hz.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
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},
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{
"group": "query",
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"description": "",
"example": "3:2",
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}
],
"serviceName": "Audio Calc",
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"just-intonation",
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},
{
"url": "https://audio-calc.x402tookit.com/lufs-math",
"description": "Loudness maths: gain to a LUFS target or platform, resulting true peak vs ceiling, or combining segment loudness.",
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},
"method": "GET",
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"parameters": [
{
"group": "query",
"name": "ceilingDbtp",
"type": "number",
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{
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"example": "spotify",
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},
{
"url": "https://audio-calc.x402tookit.com/room-modes",
"description": "Room mode frequencies (axial, tangential, oblique) for a rectangular room, plus Schroeder frequency from RT60.",
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"group": "query",
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{
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{
"group": "query",
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"example": 20,
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},
{
"group": "query",
"name": "width",
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},
{
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},
{
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"description": "Speed of sound in air at a temperature, wavelength and period for a frequency or the reverse, with delay per metre.",
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},
{
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"example": 1,
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},
{
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"serviceName": "Audio Calc",
"tags": [
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"iconUrl": ""
}
}