api.teardrop.dev
Agents fetch the card, call marketplace tools over MCP and A2A, and settle per call in USDC on Base. No signup.
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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF2Eec9De86274913F85A8aA6427Ad65a9B0bC90a",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.teardrop.dev/tools/mcp",
"tags": [
"crypto",
"defi",
"onchain data",
"wallet analytics",
"ai agents"
],
"iconUrl": "https://teardrop.dev/teardrop.png",
"mimeType": "application/json",
"description": "Teardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.",
"serviceName": "Teardrop"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"id": 1,
"method": "tools/call",
"params": {
"name": "get_token_price",
"arguments": {
"tokens": [
"ETH"
]
}
},
"jsonrpc": "2.0"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"id": 1,
"result": {
"content": [
{
"text": "{\"vs_currency\":\"usd\",\"prices\":[{\"id\":\"ethereum\",\"symbol\":\"eth\",\"price\":3500.0,\"market_cap\":null,\"volume_24h\":null,\"change_24h_pct\":null}]}",
"type": "text"
}
],
"isError": false
},
"jsonrpc": "2.0"
}
}
},
"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",
"required": [
"jsonrpc",
"id",
"method",
"params"
],
"properties": {
"id": {
"oneOf": [
{
"type": "integer"
},
{
"type": "string"
}
]
},
"method": {
"type": "string",
"const": "tools/call"
},
"params": {
"type": "object",
"required": [
"name",
"arguments"
],
"properties": {
"name": {
"type": "string",
"minLength": 1
},
"arguments": {
"type": "object"
}
},
"additionalProperties": false
},
"jsonrpc": {
"type": "string",
"const": "2.0"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}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 0.035 USDC on Base to 0xF2Ee…bC90a. The signed payment is good for 5 minutes.
- Paid to
- 0xF2Ee…bC90a
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 35000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xF2Eec9De86274913F85A8aA6427Ad65a9B0bC90a",
"amount": "35000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "mcp",
"toolName": "assess_counterparty_risk",
"transport": "streamable-http",
"description": "Return a decision-ready counterparty-risk verdict for an EVM address before funds or authority are committed. The result branches to high_risk, caution, acceptable, or insufficient_data with the evidence needed for the calling agent to act.",
"inputSchema": {
"type": "object",
"title": "AssessCounterpartyRiskInput",
"required": [
"wallet_address"
],
"properties": {
"chain_ids": {
"type": "array",
"items": {
"type": "string"
},
"title": "Chain Ids",
"description": "DeBank chain identifiers scoping approvals and history; positions and net worth remain all-chain."
},
"wallet_address": {
"type": "string",
"title": "Wallet Address",
"description": "EVM wallet address (0x-prefixed)"
}
}
}
},
"output": {
"type": "json",
"example": {
"as_of": "",
"verdict": "high_risk",
"provenance": {
"provider": "",
"retrieved_at": ""
},
"wallet_address": ""
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"toolName",
"inputSchema"
],
"properties": {
"type": {
"type": "string",
"const": "mcp"
},
"toolName": {
"type": "string"
},
"transport": {
"enum": [
"streamable-http",
"sse"
],
"type": "string"
},
"description": {
"type": "string"
},
"inputSchema": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"wallet_address",
"verdict",
"provenance",
"as_of"
],
"properties": {
"as_of": {
"type": "string"
},
"verdict": {
"enum": [
"high_risk",
"caution",
"acceptable",
"insufficient_data"
],
"type": "string"
},
"activity": {
"type": "object",
"properties": {
"tx_count": {
"type": "integer",
"default": 0
},
"cex_names": {
"type": "array",
"items": {
"type": "string"
}
},
"distinct_counterparties": {
"type": "integer",
"default": 0
}
}
},
"provenance": {
"type": "object",
"required": [
"provider",
"retrieved_at"
],
"properties": {
"provider": {
"type": "string"
},
"cache_hit": {
"type": "boolean",
"default": false
},
"source_urls": {
"type": "array",
"items": {
"type": "string"
}
},
"retrieved_at": {
"type": "string"
},
"cache_age_seconds": {
"anyOf": [
{
"type": "number",
"minimum": 0
},
{
"type": "null"
}
],
"default": null
},
"cache_ttl_seconds": {
"anyOf": [
{
"type": "integer",
"minimum": 0
},
{
"type": "null"
}
],
"default": null
},
"source_fetched_at": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
}
},
"description": "Machine-readable source and freshness metadata for a tool response."
},
"liquidation": {
"type": "object",
"properties": {
"status": {
"type": "string",
"default": "no_debt"
},
"worst_health_factor": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null
},
"has_borrow_positions": {
"type": "boolean",
"default": false
}
}
},
"risk_factors": {
"type": "array",
"items": {
"type": "object",
"required": [
"category",
"severity",
"detail"
],
"properties": {
"detail": {
"type": "string"
},
"category": {
"type": "string"
},
"severity": {
"enum": [
"high",
"medium",
"low"
],
"type": "string"
}
}
}
},
"data_complete": {
"type": "boolean",
"default": true
},
"partial_errors": {
"type": "array",
"items": {
"type": "string"
}
},
"wallet_address": {
"type": "string"
},
"approval_summary": {
"type": "object",
"properties": {
"total": {
"type": "integer",
"default": 0
},
"unlimited": {
"type": "integer",
"default": 0
},
"hacked_spenders": {
"type": "integer",
"default": 0
},
"sum_exposure_usd": {
"type": "number",
"default": 0
},
"abandoned_spenders": {
"type": "integer",
"default": 0
},
"unverified_spenders": {
"type": "integer",
"default": 0
}
}
},
"total_net_worth_usd": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"default": null
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-08 00:42Z
- Last indexed by Roundhouse
- 2026-10-26 20:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-05 09:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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. 22 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.teardrop.dev 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.teardrop.dev' 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.teardrop.dev/tools/mcp#assess_counterparty_risk, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.