api.getplexa.com
Plexa is an x402-native, pay-per-call API giving AI trading agents decision-grade execution economics: executable quotes on Base, Polygon and Arbitrum, and a pre-trade token check on Base that says avoid only when a trap is proven on-chain. Pay in USDC from Base, Polygon, Arbitrum or Solana.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.05 USDC on Base to 0xd993…5A7ef. The signed payment is good for 5 minutes.
- Paid to
- 0xd993…5A7ef
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 50000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xd993…5A7ef
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xd993…5A7ef
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- D6FqEy…kVLor
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xd993eAfBA87cFfa2ca2CFF5A56EF89034575A7ef",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xd993eAfBA87cFfa2ca2CFF5A56EF89034575A7ef",
"amount": "50000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xd993eAfBA87cFfa2ca2CFF5A56EF89034575A7ef",
"amount": "50000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "D6FqEyoFvkgGy4PpJjckHc3xRXhzL6mWQ25gz4rkVLor",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"sizeUSD": "1000"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ts": 1786358976434,
"quote": {
"direction": "buy",
"confidence": "high",
"executablePrice": 0.0005214424247520731
},
"market": {
"holderCount": 5223863,
"marketCapUsd": 542587444,
"priceUsdSpot": 2277.76,
"volume24hUsd": 551324354.8699999
},
"reasons": [
"no provable trap detected. This is NOT a safety rating: it means none of the checks that can PROVE a trap (NO_EXIT_VENUE, EXIT_LIQUIDITY_DRAINED, TRADING_DISABLED) fired at this block, AND the liquidity sweep reached a conclusion (liquidityCoverage.conclusive). Structural risk — age, holder concentration, liquidity depth, transfer restrictions — is reported in risk_profile and can still be severe",
"could not check F_CONC — reported as unknown, never as clean; confidence reduced accordingly"
],
"sources": {
"*": "measured",
"market": "vendor:dexscreener+goplus",
"market.holderCount": "vendor:goplus",
"risk_profile.concentration": "unavailable:holder-axis-produced-nothing"
},
"verdict": "clear",
"coverage": {
"axesExpected": 5,
"axesReporting": 4
},
"triggers": [],
"confidence": "medium",
"validUntil": 1786358979434,
"risk_profile": {
"age": {
"ageDays": 1143.6,
"genesisBlock": 381217
},
"oracle": {
"source": "chainlink:ETH / USD",
"deviationBps": 16
},
"liquidity": {
"poolCount": 32,
"venueCount": 13,
"exitLiquidityUsd": 81553087.89
},
"concentration": {
"stale": null,
"ageSec": null,
"source": null,
"top1SharePct": null,
"top10SharePct": null
},
"transferability": {
"fingerprints": "none",
"hasBlacklist": false,
"tradingEnabled": null
}
},
"liquidityCoverage": {
"asOfBlock": 49784814,
"conclusive": true,
"poolsFound": 32,
"venuesUnread": 0,
"asOfBlockFirst": 49784813,
"factoriesChecked": 13,
"unmeasuredVenues": 0,
"singletonPoolsSeen": 1,
"singletonPoolsHooked": 0,
"unmeasuredVenueNames": [],
"singletonPoolsCounted": 1,
"singletonPoolsRejected": 0,
"singletonScanTruncated": false
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"examples": [
{
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"sizeUSD": "1000"
}
],
"required": [
"token"
],
"properties": {
"chain": {
"enum": [
"base",
"polygon",
"matic",
"arbitrum",
"arbitrum-one",
"arb",
"eip155:8453",
"eip155:137",
"eip155:42161"
],
"type": "string",
"description": "Optional, default \"base\". One of: base | polygon | matic | arbitrum | arbitrum-one | arb | eip155:8453 | eip155:137 | eip155:42161 — case-sensitive (see `enum`). The safety flags are Base-tuned, so a non-base value currently answers 422 rather than returning Base-calibrated flags for another chain."
},
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "ERC-20 to vet before buying. 0x + 40 hex (see `pattern`) — a symbol like \"WETH\" is rejected with 400."
},
"sizeUSD": {
"type": "string",
"pattern": "^(?:0\\.\\d*[1-9]\\d*|[1-9]\\d*(?:\\.\\d+)?)$",
"maxLength": 78,
"description": "Optional USD notional for the executable-quote sub-result, default \"1000\". A STRING, not a number; positive, no thousands separator (\"1,000\" is rejected) — see `pattern`."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"quote": {
"type": "object",
"description": "Executable quote sub-result (realizable fill under size, not mid/spot)"
},
"reasons": {
"type": "array",
"items": {
"type": "string"
},
"description": "Human-readable reasons behind the verdict"
},
"verdict": {
"type": "string",
"description": "avoid | clear | unknown. \"avoid\" = a listed trap was PROVEN at this block (see `triggers`); \"clear\" = none of them fired AND the liquidity sweep reached a conclusion; \"unknown\" = none fired but the sweep did NOT reach a conclusion (`liquidityCoverage.conclusive: false`), so absence of a trap is not established — see the `exit-coverage-incomplete:<what>` line in `reasons`. \"clear\" is NOT a safety rating and NOT a prediction — structural risk lives in `risk_profile`. verdict semantics changed 2026-08-01 (v2): avoid = provable trap only; ok/caution are gone. 2026-08-27 (P67): a THIRD value \"unknown\" was added — it takes over the cases that used to answer \"clear\" while `liquidityCoverage.conclusive` was false. No existing value changed meaning; code branching on \"avoid\" is unaffected, and code branching on \"clear\" now gets strictly fewer, better-founded clears."
},
"triggers": {
"type": "array",
"items": {
"type": "string"
},
"description": "Proven traps that fired — CLOSED list (NO_EXIT_VENUE, EXIT_LIQUIDITY_DRAINED, TRADING_DISABLED), empty when verdict is \"clear\"."
},
"confidence": {
"type": "string",
"description": "high | medium | low. On \"avoid\" this is confidence IN THE TRIGGER, which is a measurement taken this call, so it is always \"high\" — a check that failed elsewhere does not make the measured trap less true. On \"clear\" it is how COMPLETE the checks were: fewer axes computed, lower confidence. On \"unknown\" it is capped at \"low\" by construction: the check the verdict depends on did not finish, so a high number there would contradict the verdict word next to it. Either way the gaps are reported explicitly — see `reasons` and the null fields in `risk_profile`."
},
"risk_profile": {
"type": "object",
"description": "Structural risk as measured DATA (age, concentration, liquidity incl. exitLiquidityUsd, oracle availability, transfer restrictions), each section with a plain-language note. Never a severity: these factors do not separate live from dead tokens [M, n=40]."
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_g9x4yzn7"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 10:19Z
- Last indexed by Roundhouse
- 2026-09-24 23:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 02:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service api.getplexa.com and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.getplexa.com' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.getplexa.com/v1/token-safety, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.