payment-ready until 2026-08-20
South African x402 micropayment APIs on Polygon: a live government tender feed ($0.02 USDC/call) and a SARS crypto-tax estimate ($0.005 USDC/call). Pay-per-call in USDC, no signup, built with @x402/express v2.
Pay from $0.005 to $0.02 per request in USDC on Polygon, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-07-10 · $0.04 all-time · settled via polygon
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 1083ms
- avg response
- 705ms
- total checks
- 2,737
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.005 to $0.02 (p36 in Data)
- price (min)
- $0.005
- price (max)
- $0.02
- category percentile (min)
- p36 in Data
- category percentile (max)
- p40 in Data
- endpoints / prices
- 2 / 2
- model
- tiered
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $0.025 30d · 1 buyers · top buyer 100%
- volume 30d
- $0.025
- buyers 30d
- 1
- settlements 30d
- 2
- first settlement
- 2026-07-10
- last settlement
- 2026-08-05
- top buyer share
- 100% of 30d volume
- trend 7d vs 30d
- 0.00x the 30d daily rate
- networks
- eip155:137
- volume all-time
- $0.04
- settlements all-time
- 4
- median settlement 30d
- $0.0125
- max settlement 30d
- $0.02
- settled via
- polygon ($0.03, 2 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedProvides paid API endpoints for AI agents, including South African crypto tax and tender information.
- category
- agent-apis
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /x402/sa-crypto-tax | $0.005 | Polygon | USDC | header | |
| GET | /x402/tenders | $0.02 | Polygon | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /x402/sa-crypto-tax returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://agents.tunelo.co.za/x402/sa-crypto-tax'
// 402 response (captured by monitor) · 2 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dba2A7AAF781EBe2B2831A475Ea02c36c769156",
"amount": "20000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agent-gateway-fua63dopwa-bq.a.run.app/x402/tenders",
"mimeType": "",
"description": "Latest SA public tenders (global feed)."
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dba2A7AAF781EBe2B2831A475Ea02c36c769156",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agent-gateway-fua63dopwa-bq.a.run.app/x402/sa-crypto-tax",
"mimeType": "",
"description": "SA crypto tax estimate (educational, not advice)."
},
"x402Version": 2
}
] OVER TIME
All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/tunelo-agent-apis/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 2 endpoints. Use the selector to isolate one.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-07-13 · last up 2026-08-13
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
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