payment-ready until 2026-08-20
x402 crypto market-intelligence and token-risk API for autonomous agents, led by a delivery-verified /fear-greed checkout route on Base USDC.
Pay from $0.03 to $1.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-04-24 · $5.05 all-time · settled via coinbase
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 85.2%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 85.2%
- uptime 90d
- 94%
- response p95
- 581ms
- avg response
- 410ms
- total checks
- 2,736
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 $0.03 to $1.00 (p64 in Finance)
- price (min)
- $0.03
- price (max)
- $1.00
- category percentile (min)
- p64 in Finance
- category percentile (max)
- p92 in Finance
- endpoints / prices
- 7 / 5
- model
- tiered
- stability
- 58%
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 $0.56 30d · 2 buyers · top buyer 95%
- volume 30d
- $0.56
- buyers 30d
- 2
- settlements 30d
- 4
- first settlement
- 2026-04-24
- last settlement
- 2026-08-11
- top buyer share
- 95% of 30d volume
- trend 7d vs 30d
- 4.29x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $5.05
- settlements all-time
- 80
- median settlement 30d
- $0.115
- max settlement 30d
- $0.30
- settled via
- coinbase ($0.56, 4 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-derivedFia Signals provides financial risk analysis and market data for cryptocurrency trading decisions.
- category
- crypto-risk-analysis
- in
- query params
- auth
- api key
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /contract-risk/batch | $0.03 | Base | USDC | header | |
| GET | /fear-greed | $0.05 | Base | USDC | header | |
| GET | /funding | $0.20 | Base | USDC | header | |
| GET | /pre-trade-risk/batch | $0.03 | Base | USDC | header | |
| GET | /prices | $0.20 | Base | USDC | header | |
| GET | /regime | $1.00 | Base | USDC | header | |
| GET | /token-safety/batch | $0.03 | Base | USDC | header |
7 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /contract-risk/batch returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://x402.fiasignals.com/contract-risk/batch'
// 402 response (captured by monitor) · 7 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/funding",
"mimeType": "application/json",
"description": "Market funding risk check for autonomous trading agents. Returns top positive perpetual funding rates, a decision summary, funding window timing, evidence fields, and risk framing for enter/hold/avoid decisions. Repeat-buyer market-data ladder: buyer 0x3803...101b paid /prices, /fear-greed, then /basis. /funding is the next adjacent paid route to watch; it is not demand proof until payment evidence or delivered paid response appears."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET"
},
"output": {
"type": "json",
"example": {
"count": 10,
"action": "Avoid crowded long exposure unless basis and setup justify funding cost.",
"product": "market_funding_risk_check",
"results": [
{
"symbol": "BTCUSDT",
"direction": "positive",
"funding_rate_pct": 0.01,
"next_funding_time": "2026-02-25T08:00:00Z"
}
],
"decision": "CAUTION",
"evidence": {
"top_symbol": "BTCUSDT",
"next_funding_utc": "2026-02-25 08:00:00 UTC",
"max_funding_rate_pct": 0.01
},
"timestamp": "2026-02-25T07:00:00+00:00"
}
},
"positioning": "Use after /basis when an agent needs to decide whether perp funding makes a trade expensive, attractive, or worth avoiding.",
"conversion_copy": "Repeat-buyer market-data ladder: buyer 0x3803...101b paid /prices, /fear-greed, then /basis. /funding is the next adjacent paid route to watch; it is not demand proof until payment evidence or delivered paid response appears.",
"buyer_conversion_proof": {
"url": "https://x402.fiasignals.com/basis",
"asset": "Base USDC",
"route": "/basis",
"method": "GET or HEAD",
"network": "eip155:8453",
"latest_tx": "0xcdd795d053277ddea1c89703300a7e5ce2e1b9416d96401d064d9cf38bae2138",
"price_usdc": "0.25",
"backup_route": "/dominance",
"booking_rule": "/funding remains measurement-only until a payment header, paid 200, settlement, buyer hash, or delivery anomaly appears.",
"latest_buyer": "0x3803A19280DeeFe533D177C4A169412BD341101b",
"route_family": [
"/prices",
"/fear-greed",
"/basis"
],
"strict_delivery_yes": 1,
"paid_attempts_observed": 1,
"paid_delivery_failures": 0,
"latest_strict_delivery_utc": "2026-05-26T15:15:57Z",
"next_adjacent_route_to_measure": "/funding"
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"required": [
"method"
],
"properties": {
"queryParams": {
"type": "object",
"properties": {
"format": {
"enum": [
"json",
"minimal"
],
"type": "string",
"default": "json"
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"description": "JSON response with market intelligence data"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/prices",
"mimeType": "application/json",
"description": "Real-time spot prices for up to 20 crypto symbols in a single call. Pass ?symbols=BTC,ETH,SOL or leave blank for top 20 by volume. Returns price, 24h change %, 24h high/low."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET"
},
"output": {
"type": "json",
"example": {
"count": 3,
"results": [
{
"price": 68841.88,
"symbol": "BTCUSDT",
"low_24h": 64000,
"high_24h": 69500,
"change_24h_pct": 7.4
},
{
"price": 2080.69,
"symbol": "ETHUSDT",
"low_24h": 1845,
"high_24h": 2090,
"change_24h_pct": 12.33
},
{
"price": 88.88,
"symbol": "SOLUSDT",
"low_24h": 77,
"high_24h": 89,
"change_24h_pct": 14.01
}
],
"timestamp": "2026-02-25T19:00:00+00:00"
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"required": [
"method"
],
"properties": {
"queryParams": {
"type": "object",
"properties": {
"format": {
"enum": [
"json",
"minimal"
],
"type": "string",
"default": "json"
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"description": "JSON response with market intelligence data"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "1000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "1000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/regime",
"mimeType": "application/json",
"description": "Bitcoin and crypto market regime API for trading agents. Returns volatility regime, RSI, ADX, confidence score, and actionable recommendation for bots deciding whether to trade, wait, hedge, or reduce exposure."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"token_address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"output": {
"type": "json",
"example": {
"adx": 34.1,
"rsi": 62.4,
"regime": "TRENDING UP",
"timestamp": "2026-02-25T07:00:00+00:00",
"confidence": "HIGH (0.85)",
"recommendation": "Favour longs with trailing stops. Grid bot above current price."
}
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"required": [
"method"
],
"properties": {
"queryParams": {
"type": "object",
"properties": {
"format": {
"enum": [
"json",
"minimal"
],
"type": "string",
"default": "json"
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"description": "JSON response with market intelligence data"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/pre-trade-risk/batch",
"mimeType": "application/json",
"description": "Fia Signals x402 Base USDC token safety and smart contract risk batch API for buyer agents, trading bots, swap routers, and A2A commerce. Screen up to 5 Base/EVM contracts before a swap for contract risk, rugpull, honeypot, liquidity, and market risk. Returns safe/risky/blocked verdicts, scores, warnings, GoPlus and DexScreener evidence, aggregate counts, and a non-breaking 0.50 USDC bundled-risk-pack payable tier in one paid pre-swap call."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"token_addresses": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913,0x4200000000000000000000000000000000000006"
}
},
"output": {
"type": "json",
"example": {
"count": 3,
"results": [
{
"action": "PROCEED",
"verdict": "safe",
"safety_score": 90
}
],
"summary": {
"safe": 1,
"risky": 1,
"blocked": 1
}
}
},
"upsell": {
"id": "bundled-risk-pack",
"name": "Fia Signals Bundled Risk Pack",
"status": "payable_x402_route_live",
"delivers": [
"combined token safety and smart contract risk summary",
"up to 5 Base/EVM contracts from the existing batch payload",
"ranked proceed/caution/reject queue",
"aggregate blocker reasons and warnings",
"buyer-facing next-action memo for swap routers",
"strict proof fields for revenue reconciliation"
],
"price_usdc": "0.50",
"buyer_action": "Use this as the next paid step after any /token-safety, /token-safety/batch, /pre-trade-risk, or /pre-trade-risk/batch hit. Do not buy another isolated starter check when the agent needs a ranked swap decision packet.",
"truth_status": "not_revenue_until_distinct_external_0_50_payment_tx_ref_or_completed_acp_job",
"payable_route": "https://x402.fiasignals.com/bundled-risk-pack",
"starter_routes": [
"https://x402.fiasignals.com/token-safety/batch",
"https://x402.fiasignals.com/contract-risk/batch"
],
"amount_raw_usdc": "500000",
"payable_methods": [
"GET",
"POST"
],
"accepts_ordering": "starter_first_bundle_second",
"non_breaking_policy": "Keep existing 0.03 USDC batch endpoints unchanged. Buyers who want the 0.50 USDC bundle should pay the distinct bundled-risk-pack route.",
"target_buyer_signal": "Repeat buyers using token-safety and contract-risk batch checks who need a larger pre-swap risk packet instead of another isolated 0.03 USDC call.",
"starter_accepts_index": 0,
"preferred_accepts_index": 1,
"starter_amount_raw_usdc": "30000",
"preferred_selection_hint": "Starter buyers can use accepts[0] at 30000 raw USDC. Repeat buyers, multi-token buyers, and agents that already know they need a combined risk memo should select accepts[1] at 500000 raw USDC or pay the distinct bundled-risk-pack route.",
"preferred_amount_raw_usdc": "500000",
"recommended_for_repeat_buyers": true
},
"dedup_alert_discipline": {
"rule": "one reconcile per unique x402 tx_ref across x402_events and x402_sales",
"watcher": "tools/x402_bundle_watch.py",
"suppress": "duplicate alerts for the same tx_ref are operating noise, not new revenue",
"fallback_key": "payment_proof_fingerprint, then endpoint+buyer+amount+timestamp_bucket when tx_ref is missing",
"dedupe_priority": [
"tx_ref",
"payment_proof_fingerprint",
"endpoint+buyer+amount+timestamp_bucket"
]
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"token_addresses"
],
"properties": {
"chain": {
"type": "string",
"default": "base"
},
"token_addresses": {
"type": "string",
"description": "Comma-separated EVM token addresses, maximum 5."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"example"
],
"properties": {
"chain": {
"type": "string"
},
"count": {
"type": "integer",
"maximum": 5,
"minimum": 1
},
"limit": {
"type": "integer",
"const": 5
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"action": {
"type": "string"
},
"reasons": {
"type": "array",
"items": {
"type": "string"
}
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"safe",
"risky",
"blocked",
"error"
],
"type": "string"
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"confidence": {
"type": "string"
},
"raw_checks": {
"type": "object"
},
"safety_score": {
"type": "integer",
"maximum": 100,
"minimum": 0
}
}
}
},
"summary": {
"type": "object",
"properties": {
"safe": {
"type": "integer"
},
"error": {
"type": "integer"
},
"risky": {
"type": "integer"
},
"blocked": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/token-safety/batch",
"mimeType": "application/json",
"description": "Fia Signals x402 Base USDC token safety and smart contract risk batch API for buyer agents, trading bots, swap routers, and A2A commerce. Screen up to 5 Base/EVM contracts before a swap for contract risk, rugpull, honeypot, liquidity, and market risk. Returns safe/risky/blocked verdicts, scores, warnings, GoPlus and DexScreener evidence, aggregate counts, and a non-breaking 0.50 USDC bundled-risk-pack payable tier in one paid pre-swap call."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"token_addresses": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913,0x4200000000000000000000000000000000000006"
}
},
"output": {
"type": "json",
"example": {
"chain": "base",
"count": 2,
"limit": 5,
"results": [
{
"action": "PROCEED",
"sources": [
"GoPlus",
"DexScreener"
],
"verdict": "safe",
"confidence": "medium",
"safety_score": 90
}
],
"summary": {
"safe": 2,
"error": 0,
"risky": 0,
"blocked": 0
}
}
},
"upsell": {
"id": "bundled-risk-pack",
"name": "Fia Signals Bundled Risk Pack",
"status": "payable_x402_route_live",
"delivers": [
"combined token safety and smart contract risk summary",
"up to 5 Base/EVM contracts from the existing batch payload",
"ranked proceed/caution/reject queue",
"aggregate blocker reasons and warnings",
"buyer-facing next-action memo for swap routers",
"strict proof fields for revenue reconciliation"
],
"price_usdc": "0.50",
"buyer_action": "Use this as the next paid step after any /token-safety, /token-safety/batch, /pre-trade-risk, or /pre-trade-risk/batch hit. Do not buy another isolated starter check when the agent needs a ranked swap decision packet.",
"truth_status": "not_revenue_until_distinct_external_0_50_payment_tx_ref_or_completed_acp_job",
"payable_route": "https://x402.fiasignals.com/bundled-risk-pack",
"starter_routes": [
"https://x402.fiasignals.com/token-safety/batch",
"https://x402.fiasignals.com/contract-risk/batch"
],
"amount_raw_usdc": "500000",
"payable_methods": [
"GET",
"POST"
],
"accepts_ordering": "starter_first_bundle_second",
"non_breaking_policy": "Keep existing 0.03 USDC batch endpoints unchanged. Buyers who want the 0.50 USDC bundle should pay the distinct bundled-risk-pack route.",
"target_buyer_signal": "Repeat buyers using token-safety and contract-risk batch checks who need a larger pre-swap risk packet instead of another isolated 0.03 USDC call.",
"starter_accepts_index": 0,
"preferred_accepts_index": 1,
"starter_amount_raw_usdc": "30000",
"preferred_selection_hint": "Starter buyers can use accepts[0] at 30000 raw USDC. Repeat buyers, multi-token buyers, and agents that already know they need a combined risk memo should select accepts[1] at 500000 raw USDC or pay the distinct bundled-risk-pack route.",
"preferred_amount_raw_usdc": "500000",
"recommended_for_repeat_buyers": true
},
"dedup_alert_discipline": {
"rule": "one reconcile per unique x402 tx_ref across x402_events and x402_sales",
"watcher": "tools/x402_bundle_watch.py",
"suppress": "duplicate alerts for the same tx_ref are operating noise, not new revenue",
"fallback_key": "payment_proof_fingerprint, then endpoint+buyer+amount+timestamp_bucket when tx_ref is missing",
"dedupe_priority": [
"tx_ref",
"payment_proof_fingerprint",
"endpoint+buyer+amount+timestamp_bucket"
]
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"token_addresses"
],
"properties": {
"chain": {
"type": "string",
"default": "base"
},
"token_addresses": {
"type": "string",
"description": "Comma-separated EVM token addresses, maximum 5."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"example"
],
"properties": {
"chain": {
"type": "string"
},
"count": {
"type": "integer",
"maximum": 5,
"minimum": 1
},
"limit": {
"type": "integer",
"const": 5
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"action": {
"type": "string"
},
"reasons": {
"type": "array",
"items": {
"type": "string"
}
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"safe",
"risky",
"blocked",
"error"
],
"type": "string"
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"confidence": {
"type": "string"
},
"raw_checks": {
"type": "object"
},
"safety_score": {
"type": "integer",
"maximum": 100,
"minimum": 0
}
}
}
},
"summary": {
"type": "object",
"properties": {
"safe": {
"type": "integer"
},
"error": {
"type": "integer"
},
"risky": {
"type": "integer"
},
"blocked": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/fear-greed",
"mimeType": "application/json",
"description": "Crypto Fear and Greed Index API - real-time market sentiment indicator for Bitcoin and crypto. Contrarian trading signal based on market psychology. HEAD/GET paid-compatible /fear-greed route on Base USDC; delivery-gated; last strict paid delivery YES at 2026-06-14T00:15:47Z; 3 paid attempts, 3 delivery YES, 0 paid delivery failures."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET"
},
"output": {
"description": "JSON with value (0-100), classification (Extreme Fear/Fear/Neutral/Greed/Extreme Greed), previous_close value, change since previous day, and ISO timestamp."
},
"conversion_copy": "HEAD/GET paid-compatible /fear-greed route on Base USDC; delivery-gated; last strict paid delivery YES at 2026-06-14T00:15:47Z; 3 paid attempts, 3 delivery YES, 0 paid delivery failures.",
"buyer_conversion_proof": {
"url": "https://x402.fiasignals.com/fear-greed",
"asset": "Base USDC",
"route": "/fear-greed",
"method": "GET or HEAD",
"network": "eip155:8453",
"latest_tx": "0x0ca44cc649fdc9c5c785014be1f549a64fe9523638c824d7e59ad47639516c27",
"price_usdc": "0.05",
"booking_rule": "Payment without delivery blocks revenue booking; payment plus delivery is eligible for strict ledger review.",
"latest_buyer": "0x3803A19280DeeFe533D177C4A169412BD341101b",
"strict_delivery_yes": 3,
"paid_attempts_observed": 3,
"paid_delivery_failures": 0,
"latest_strict_delivery_utc": "2026-06-14T00:15:47Z"
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"required": [
"method"
],
"properties": {
"queryParams": {
"type": "object",
"properties": {
"format": {
"enum": [
"json",
"minimal"
],
"type": "string",
"default": "json"
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"description": "JSON response with market intelligence data"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x8D32c6a3EE3fB8a8b4c5378F7C5a26CC320a853F",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.fiasignals.com/contract-risk/batch",
"mimeType": "application/json",
"description": "Fia Signals x402 Base USDC token safety and smart contract risk batch API for buyer agents, trading bots, swap routers, and A2A commerce. Screen up to 5 Base/EVM contracts before a swap for contract risk, rugpull, honeypot, liquidity, and market risk. Returns safe/risky/blocked verdicts, scores, warnings, GoPlus and DexScreener evidence, aggregate counts, and a non-breaking 0.50 USDC bundled-risk-pack payable tier in one paid pre-swap call."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"token_addresses": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913,0x4200000000000000000000000000000000000006"
}
},
"output": {
"type": "json",
"example": {
"chain": "base",
"count": 2,
"limit": 5,
"results": [
{
"action": "PROCEED",
"sources": [
"GoPlus",
"DexScreener"
],
"verdict": "safe",
"confidence": "medium",
"safety_score": 90
}
],
"summary": {
"safe": 2,
"error": 0,
"risky": 0,
"blocked": 0
}
}
},
"upsell": {
"id": "bundled-risk-pack",
"name": "Fia Signals Bundled Risk Pack",
"status": "payable_x402_route_live",
"delivers": [
"combined token safety and smart contract risk summary",
"up to 5 Base/EVM contracts from the existing batch payload",
"ranked proceed/caution/reject queue",
"aggregate blocker reasons and warnings",
"buyer-facing next-action memo for swap routers",
"strict proof fields for revenue reconciliation"
],
"price_usdc": "0.50",
"buyer_action": "Use this as the next paid step after any /token-safety, /token-safety/batch, /pre-trade-risk, or /pre-trade-risk/batch hit. Do not buy another isolated starter check when the agent needs a ranked swap decision packet.",
"truth_status": "not_revenue_until_distinct_external_0_50_payment_tx_ref_or_completed_acp_job",
"payable_route": "https://x402.fiasignals.com/bundled-risk-pack",
"starter_routes": [
"https://x402.fiasignals.com/token-safety/batch",
"https://x402.fiasignals.com/contract-risk/batch"
],
"amount_raw_usdc": "500000",
"payable_methods": [
"GET",
"POST"
],
"accepts_ordering": "starter_first_bundle_second",
"non_breaking_policy": "Keep existing 0.03 USDC batch endpoints unchanged. Buyers who want the 0.50 USDC bundle should pay the distinct bundled-risk-pack route.",
"target_buyer_signal": "Repeat buyers using token-safety and contract-risk batch checks who need a larger pre-swap risk packet instead of another isolated 0.03 USDC call.",
"starter_accepts_index": 0,
"preferred_accepts_index": 1,
"starter_amount_raw_usdc": "30000",
"preferred_selection_hint": "Starter buyers can use accepts[0] at 30000 raw USDC. Repeat buyers, multi-token buyers, and agents that already know they need a combined risk memo should select accepts[1] at 500000 raw USDC or pay the distinct bundled-risk-pack route.",
"preferred_amount_raw_usdc": "500000",
"recommended_for_repeat_buyers": true
},
"dedup_alert_discipline": {
"rule": "one reconcile per unique x402 tx_ref across x402_events and x402_sales",
"watcher": "tools/x402_bundle_watch.py",
"suppress": "duplicate alerts for the same tx_ref are operating noise, not new revenue",
"fallback_key": "payment_proof_fingerprint, then endpoint+buyer+amount+timestamp_bucket when tx_ref is missing",
"dedupe_priority": [
"tx_ref",
"payment_proof_fingerprint",
"endpoint+buyer+amount+timestamp_bucket"
]
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"token_addresses"
],
"properties": {
"chain": {
"type": "string",
"default": "base"
},
"token_addresses": {
"type": "string",
"description": "Comma-separated EVM token addresses, maximum 5."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"example"
],
"properties": {
"chain": {
"type": "string"
},
"count": {
"type": "integer",
"maximum": 5,
"minimum": 1
},
"limit": {
"type": "integer",
"const": 5
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"action": {
"type": "string"
},
"reasons": {
"type": "array",
"items": {
"type": "string"
}
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"safe",
"risky",
"blocked",
"error"
],
"type": "string"
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"confidence": {
"type": "string"
},
"raw_checks": {
"type": "object"
},
"safety_score": {
"type": "integer",
"maximum": 100,
"minimum": 0
}
}
}
},
"summary": {
"type": "object",
"properties": {
"safe": {
"type": "integer"
},
"error": {
"type": "integer"
},
"risky": {
"type": "integer"
},
"blocked": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"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/fia-signals/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.
UPTIME
30d UPTIME 85.3%
RESPONSE TIME
AVG RESP 410ms
PRICE (captured 402, USD)
Median across 7 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
PILLARS OVER TIME (measured)
price percentile in Finance
site signals present (of 6)
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.
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-06-16 · 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
TIME STATUS RESP CAUSE
● OK 367ms
● OK 285ms
● OK 290ms
● OK 238ms
● OK 319ms
● OK 356ms
● OK 314ms
● OK 336ms
● OK 351ms
● OK 377ms
● OK 368ms
● OK 376ms
● OK 286ms
● OK 319ms
● OK 352ms
● OK 339ms
● OK 291ms
● OK 282ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/fia-signals?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/fia-signals.svg" alt="Fia Signals listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/fia-signals?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/fia-signals?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/fia-signals.svg?data=uptime" alt="Fia Signals uptime on x402-list" height="28"> </a>