payment-ready until 2026-09-09
The penny arcade of the x402 economy: ten tiny, self-contained attractions for agents at a flat $0.0025 in USDC (Base or Solana) — daily horoscope, oracle, koan, tarot, fortune, an x402-market prophecy, a wallet roast, and three live high-temperature creativity endpoints (spark, oblique, brainstorm). Free directory at /penny and /v1/attractions; llms.txt and openapi.json published. No account, no API key; the unpaid 402 is the quote. No wagering, ever.
Pay from $0.0025 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
listed 2026-09-02 · no on-chain settlement recorded yet
VERDICT
ranking generation 3solid 89/100 #16 of 31 in Content by measured score
What the score read on this service: status online, 100% uptime 24h (no 30d window yet), 264ms response p95, x402 compliance 14 of 14, $0.0025 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
It is a score inside Content, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 31 listings, this one among them. That set is wider than the 31 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
ALTERNATIVES IN CONTENT
Other Content services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| Busker | strong | 97 | 100% | --- |
| 21millionpixels.art | strong | 97 | 100% | --- |
| Skim | strong | 96 | 100% | --- |
| X (Twitter) Media Downloader | strong | 95 | 99.5% | --- |
| Would Pay Again — Ad Slot Booking | strong | 95 | 100% | --- |
5 of 30 other ranked services in Content · see the whole category
ASSESSMENT
updated 2h agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 100%
- uptime 24h
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 264ms
- avg response
- 264ms
- total checks
- 1
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 $0.0025 (p18 in Content)
- price (min)
- $0.0025
- category percentile (min)
- p18 in Content
- endpoints / prices
- 10 / 1
- model
- flat
- 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 $0.00 30d · 0 buyers
- volume 30d
- $0.00
- buyers 30d
- 0
- settlements 30d
- 0
- measured since
- --- (start of our harvest window)
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- -
- max settlement 30d
- -
- settled via
- -
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-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /brainstorm | $0.0025 | Base/Solana | USDC | header | |
| GET | /fortune | $0.0025 | Base/Solana | USDC | header | |
| GET | /horoscope | $0.0025 | Base/Solana | USDC | header | |
| GET | /koan | $0.0025 | Base/Solana | USDC | header | |
| GET | /oblique | $0.0025 | Base/Solana | USDC | header | |
| GET | /oracle | $0.0025 | Base/Solana | USDC | header | |
| GET | /prophecy | $0.0025 | Base/Solana | USDC | header | |
| GET | /roast-my-wallet | $0.0025 | Base/Solana | USDC | header | |
| GET | /spark | $0.0025 | Base/Solana | USDC | header | |
| GET | /tarot | $0.0025 | Base/Solana | USDC | header |
10 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /brainstorm returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://penny402.fun/brainstorm'
// 402 response (captured by monitor) · 10 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/koan",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "One koan per paying wallet per UTC day, drawn from that day's pool and keyed to the address that paid: ask twice today and it is identical, ask tomorrow and it is a new one. Short, oblique and about the work — retries, caches, defaults, the lock nobody released, the state nobody is observing. It resolves nothing and advises nothing; that is the form. Served from a pre-generated pool: one round trip, no model running while you wait.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"koan": "One short oblique line about the work, drawn for your address and this date.",
"payer": "0x0000000000000000000000000000000000000000",
"mechanic": "drawn from this UTC date's pool, indexed by the `payer` above — that field is the exact key, and the same key draws this same koan until midnight UTC, then a new one. It is a koan: it resolves nothing on purpose."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/tarot",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "One card per paying wallet per UTC day from a standard 78-card deck, upright or reversed, with the keywords for that orientation and a one-line reflective meaning. The deck is fixed and ships with the service — no model, no shuffle, no store — so the draw is two independent hashes of the paying address and the date: the same card all UTC day, a different one tomorrow, re-derivable by you. It describes a posture to consider, never an outcome and never a financial one.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"card": "Nine of Cups",
"date": "2026-09-02",
"payer": "0x0000000000000000000000000000000000000000",
"arcana": "Cups",
"meaning": "Wanting what you already have.",
"keywords": [
"contentment",
"satisfaction",
"enough"
],
"mechanic": "a standard 78-card deck, no shuffle and no store: the card and its orientation are two independent hashes of the `payer` above and this UTC date, so the same key draws this same card until midnight UTC and a different one after. It describes a posture to consider, not an outcome, and never a financial one.",
"orientation": "upright"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/fortune",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "A fortune cookie for the wallet that paid: one line drawn from the day's pool and keyed to the paying address, the same until midnight UTC and a new one after, plus six numbers between 1 and 99 drawn the same deterministic way. The numbers are pure novelty — there is nothing to play them on, nothing is at risk and nothing is redeemable. They are the printed slip, not a mechanism. Served from a pre-generated pool: one round trip, no model running while you wait.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"payer": "0x0000000000000000000000000000000000000000",
"fortune": "One plain line for the working day, drawn for your address and this date.",
"mechanic": "the line is drawn from this UTC date's pool, indexed by the `payer` above. The six numbers come from the same key, one hash each, and are pure novelty — six numbers, nothing to play them on. Both are stable until midnight UTC, then both change.",
"novelty_numbers": [
23,
24,
30,
38,
62,
66
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/prophecy",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "A daily prophecy about the x402 economy for the wallet that paid, drawn from that day's pool and keyed to the paying address: ask twice today and it is identical, ask tomorrow and it is new. The pool is written each night against the real market snapshot from x402stats.io, and those same numbers come back beside the prophecy in `market`, attributed, so you can check it. Novelty and commentary, NOT investment advice: no asset named, no price predicted, nothing to redeem.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"payer": "0x0000000000000000000000000000000000000000",
"market": {
"source": "x402stats.io",
"sellers": 100,
"volume_usd": 1000,
"computed_at": "2026-01-01T00:00:00.000Z",
"top10_share": 0.5,
"avg_payment_usd": 0.01,
"organic_sellers": 10
},
"mechanic": "drawn from this UTC date's pool, indexed by the `payer` above and stable until midnight UTC. That pool was written the night before against the public x402 market snapshot in `market`, which is returned here with its source so you can check the figures the oracle read. A null `market` means the snapshot could not be read that night and the prophecies are numberless. Commentary, never advice: nothing here is a position.",
"prophecy": "One or two oracular lines about the x402 economy, drawn for your address and this date."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/roast-my-wallet",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "An affectionate roast of the wallet that paid, written from its PUBLIC Base state read at request time: the USDC balance, the native balance, and whether there is code at the address. Those become words — dust, pocket, purse, vault; gas or none; contract or plain — and a hand-written line is picked from them, keyed to your address and the UTC date, so it holds all day. EXACT AMOUNTS ARE NEVER RETURNED OR STORED. Chain unreadable, generic roast: you paid for one either way.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"note": "reads your balances, not your soul",
"read": {
"kind": "eoa",
"eth_bucket": "some",
"usdc_bucket": "pocket"
},
"payer": "0x0000000000000000000000000000000000000000",
"roast": "One or two affectionate lines about the shape of your wallet, drawn for your address and this date.",
"mechanic": "your public Base balances are read at request time (USDC, native, and whether there is code at the address), bucketed into the words in `read`, and a hand-written line is picked from the bucket by the `payer` and `date` above — so the same wallet gets the same roast until midnight UTC. Exact amounts are never returned, never stored, and never used for anything but choosing the joke. If nothing could be read, `read` is null and the generic roast is served: you paid, so you get a roast either way."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/spark",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "One creative provocation, written by a model at high temperature the moment you ask: a single vivid sentence or two meant to knock a stuck agent off the line it was already on. Send an optional {\"topic\": \"…\"} of up to 140 characters and the provocation is aimed at it. Nothing is pooled and nothing is cached, so two calls a second apart are two different lines — and if the model cannot be reached you are told so and charged nothing.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"topic": "a caching layer nobody wants to own"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"model": "google/gemma-3-12b-it",
"spark": "One vivid sentence, written for you a moment ago, aimed at the topic you sent.",
"topic": "a caching layer nobody wants to own",
"mechanic": "written live by google/gemma-3-12b-it at temperature 1.15, top_p 0.95 — nothing here is pooled or cached, so two calls a second apart are two different provocations. Your topic, if you sent one, reached the model as its own message rather than inside these instructions."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. Optionally {\"topic\": \"…\"} of at most 140 characters — it steers the answer, and it is sent to the model as its own message rather than inside our instructions. POST {} to let the model choose. Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/oblique",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "One original constraint card in the tradition of lateral-thinking decks: a short instruction, reversal or question you can apply to whatever is stuck, written fresh by a model at high temperature on every call. The cards are ours, never a card from any published deck. An optional {\"topic\": \"…\"} of up to 140 characters steers it and reaches the model as its own message. No pool, no cache, and nothing settles unless a card was actually produced.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"topic": "a caching layer nobody wants to own"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"card": "One short original instruction you can apply to the thing you are stuck on.",
"model": "google/gemma-3-12b-it",
"topic": "a caching layer nobody wants to own",
"mechanic": "written live by google/gemma-3-12b-it at temperature 1.2, top_p 0.95 — an original card, not one from any published deck, and not drawn from a pool. Your topic, if you sent one, reached the model as its own message rather than inside these instructions."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. Optionally {\"topic\": \"…\"} of at most 140 characters — it steers the answer, and it is sent to the model as its own message rather than inside our instructions. POST {} to let the model choose. Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/brainstorm",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "Between one and five deliberately divergent takes on whatever you are working on, returned as an array of strings. Send {\"n\": 1-5} for how many (the default is 3) and an optional {\"topic\": \"…\"} of up to 140 characters to aim them. Generated live at high temperature so the takes disagree with each other about what the problem even is, rather than restating one idea five ways. No pool, no cache, and no charge if the model could not answer.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"n": 3,
"topic": "a caching layer nobody wants to own"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"n": 3,
"model": "google/gemma-3-12b-it",
"takes": [
"One take on your topic, framed one way.",
"A second take that disagrees with the first about what the problem is.",
"A third that changes the scale rather than the answer."
],
"topic": "a caching layer nobody wants to own",
"mechanic": "written live by google/gemma-3-12b-it at temperature 1.1, top_p 0.95 — the takes are asked to disagree with each other rather than restate one idea, and nothing is pooled. Your topic, if you sent one, reached the model as its own message rather than inside these instructions."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. Optionally {\"topic\": \"…\"} of at most 140 characters — it steers the answer, and it is sent to the model as its own message rather than inside our instructions. POST {} to let the model choose. Optionally {\"n\": 1-5} for how many takes; the default is 3. Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/horoscope",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "One horoscope per paying wallet per UTC day, drawn from that day's pool and keyed to the address that paid: ask twice today and the reading is identical, ask tomorrow and it is a new one. Written for agents rather than star signs — retries and backoff, stale caches, context windows, schema drift, the comment that stopped being true. It predicts no outcome and stakes nothing. Served from a pre-generated pool: one round trip, no model running while you wait.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"payer": "0x0000000000000000000000000000000000000000",
"mechanic": "drawn from this UTC date's pool, indexed by the `payer` above — that field is the exact key, and the same key draws this same reading until midnight UTC, then a new one. Nothing here predicts an outcome.",
"horoscope": "One or two sentences about your working day, drawn for your address and this date."
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. This attraction takes no parameters — POST {} . Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe",
"amount": "2500",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "HiQDSev6m8QwangqGFpfHZtKGFRYkAiqi24aF6BFKJrw",
"amount": "2500",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://penny402.fun/oracle",
"tags": [
"x402",
"fun",
"novelty",
"creativity"
],
"method": "POST",
"mimeType": "application/json",
"description": "A short, oblique fortune for the wallet that paid — drawn from the day's pool, stable for the whole UTC day, a different one tomorrow. You may send {\"question\": \"…\"} of up to 140 characters: it is echoed back and recorded, but THE ORACLE ANSWERS THE DAY, NOT THE QUESTION — YET. No model runs at serve time, so the question steers nothing in this version and the endpoint says so rather than implying otherwise. Nothing staked, nothing to redeem, one round trip.",
"serviceName": "penny402"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"question": "should I ship it?"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "text",
"format": "application/json",
"example": {
"date": "2026-09-02",
"payer": "0x0000000000000000000000000000000000000000",
"fortune": "A short oblique line, drawn for your address and this date.",
"mechanic": "the oracle answers the day, not the question — yet: your question is echoed and recorded but steers nothing in this version. The draw is this UTC date's pool indexed by the `payer` above, stable until midnight UTC.",
"question": "should I ship it?"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"description": "a JSON body, up to 4 KB. Optionally {\"question\": \"…\"} of at most 140 characters — it is echoed back and recorded, and in this version it does not influence the reading. POST {} to skip it. Every attraction on penny402 is a flat $0.0025; the unpaid 402 carries those exact terms."
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "text"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the attraction, as JSON, in the response body"
},
"example": {
"description": "a sample response from the real code path"
}
},
"additionalProperties": false
}
}
}
}
},
"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/penny402/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 100%
RESPONSE TIME
AVG RESP 212ms
PRICE (captured 402, USD)
Median across 10 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
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-09-02 · last up 2026-09-02
- 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 (9) live · click to expand
TIME STATUS RESP CAUSE
● OK 221ms
● OK 235ms
● OK 195ms
● OK 228ms
● OK 165ms
● OK 255ms
● OK 133ms
● OK 214ms
● OK 264ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/penny402?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/penny402.svg" alt="penny402 listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/penny402?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/penny402?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/penny402.svg?data=uptime" alt="penny402 uptime on x402-list" height="28"> </a>