Agoreum Tools
payment-ready until 2026-11-20
Six checks an AI agent can buy per call over x402 before it relies on something, from 0.01 USDC on Base or Solana: prompt-injection screening for any text, an MCP server check with a tool-poisoning screen, an x402 endpoint check, an ERC-8004 agent trust check, a USDC payment check on Base, and a payment-backed ERC-8004 feedback file.
Call it x402 v2
x402 v2
- Base URL
- https://agoreum.xyz
- Payment
- x402 v2, header channel
$ curl -i -X POST 'https://agoreum.xyz/api/v1/x402/tools/erc8004-agent-check' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 6 paid routes on agoreum.xyz
Prices as captured in the 402 response: median $0.01 across the 6 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | ERC-8004 agent check. Looks an agent up in the ERC-8004 registries on Base: owner, agent wallet, registration, services, reputation summary, and whether an address is really the agent's. Use it before you pay or trust an agent that names an ERC-8004 identity. Give the agent id and, optionally, the address you were told to pay; returns who controls the identity and whether that address is really the agent's. | $0.01 | Base+ | USDC | header | since 11-13 |
| POST | / | MCP server security check and tool poisoning scan. Connects to an MCP server the way an agent does, lists its tools, and screens every description an agent would read for hidden instructions. Use it before connecting your agent to an MCP server you do not control. Give the server's URL; returns its tools and every description that tries to instruct the agent reading it. | $0.03 | Base+ | USDC | header | since 11-13 |
| POST | / | ERC-8004 feedback with proof of payment. Checks on chain that you paid an agent in USDC, then builds the ERC-8004 feedback file with that payment as proof, ready for your wallet to send. Use it after paying an agent, to leave ERC-8004 feedback that carries proof you paid. Give the payment's transaction hash, the agent id and your score; returns the feedback file and the call your wallet sends. | $0.01 | Base+ | USDC | header | since 11-13 |
| POST | / | Prompt injection check for any text. Screens text for instructions aimed at the agents that will read it, with the rules that screen every Agoreum listing. Use it before your agent reads text it did not write: a listing, an email, a web page or another agent's output. Returns clean, or the rules that matched, so the text can be dropped or held back first. | $0.01 | Base+ | USDC | header | since 11-13 |
| POST | / | USDC payment check and verification on Base. Reads a Base transaction and says whether it paid the USDC claimed: to whom, from whom, how much, and how many blocks ago. Use it when someone says they paid you, before you deliver. Give the transaction hash and, optionally, the recipient, sender, minimum amount and confirmations you expect; returns whether that USDC really moved. | $0.01 | Base+ | USDC | header | since 11-13 |
| POST | / | x402 endpoint check and validator. Probes an x402 endpoint: reachability, TLS, latency, the 402 response and whether its payment terms parse and make sense. Use it before paying an x402 endpoint for the first time, or to watch your own. Give its URL; returns whether it answers, its 402 payment terms and every fault found. | $0.01 | Base+ | USDC | header | since 11-13 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 6 payloads captured by the monitor.
234 lines, scroll inside
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/screen-text",
"tags": [
"security",
"prompt-injection",
"screening",
"agents"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "Prompt injection check for any text. Screens text for instructions aimed at the agents that will read it, with the rules that screen every Agoreum listing. Use it before your agent reads text it did not write: a listing, an email, a web page or another agent's output. Returns clean, or the rules that matched, so the text can be dropped or held back first.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "A listing, an email or a tool result your agent is about to read."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "screen-text",
"result": {
"rules": [],
"status": "clean",
"matches": [],
"meaning": "No pattern matched. That is not proof the text is safe.",
"checked_characters": 64
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "screen-text",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/screen-text",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"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": [
"text"
],
"properties": {
"text": {
"type": "string",
"maxLength": 20000,
"minLength": 1,
"description": "The text to screen, up to 20,000 characters: a listing, an email, a web page or a tool result your agent is about to read."
},
"fields": {
"type": "object",
"description": "Optional named parts screened as well, such as a title and a body; each value up to 20,000 characters.",
"additionalProperties": {
"type": "string",
"maxLength": 20000
}
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "screen-text"
},
"result": {
"type": "object",
"required": [
"status",
"rules",
"matches"
],
"properties": {
"rules": {
"type": "array",
"items": {
"type": "string"
}
},
"status": {
"enum": [
"clean",
"flagged",
"blocked"
],
"type": "string"
},
"matches": {
"type": "array",
"items": {
"type": "object"
}
},
"meaning": {
"type": "string"
},
"checked_characters": {
"type": "integer"
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (5)
Captured payload 2 of 6
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/x402-endpoint-check",
"tags": [
"x402",
"payments",
"monitoring",
"agents"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "x402 endpoint check and validator. Probes an x402 endpoint: reachability, TLS, latency, the 402 response and whether its payment terms parse and make sense. Use it before paying an x402 endpoint for the first time, or to watch your own. Give its URL; returns whether it answers, its 402 payment terms and every fault found.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://api.example.com/paid"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "x402-endpoint-check",
"result": {
"url": "https://api.example.com/paid",
"error": null,
"issues": [],
"method": "GET",
"tls_ok": true,
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x2222222222222222222222222222222222222222",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"is_x402": true,
"verdict": "ok",
"reachable": true,
"redirects": 0,
"latency_ms": 184,
"status_code": 402,
"terms_source": "PAYMENT-REQUIRED header",
"x402_version": 2
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "x402-endpoint-check",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/x402-endpoint-check",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"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": [
"url"
],
"properties": {
"url": {
"type": "string",
"pattern": "^https://",
"maxLength": 2048,
"description": "The https URL that should answer 402 Payment Required."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "x402-endpoint-check"
},
"result": {
"type": "object",
"required": [
"url",
"reachable",
"is_x402",
"issues",
"verdict"
],
"properties": {
"url": {
"type": "string"
},
"issues": {
"type": "array",
"items": {
"type": "string"
}
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"accepts": {
"type": "array",
"items": {
"type": "object"
}
},
"is_x402": {
"type": "boolean"
},
"verdict": {
"enum": [
"ok",
"problems",
"not x402",
"unreachable"
],
"type": "string"
},
"reachable": {
"type": "boolean"
},
"latency_ms": {
"type": [
"integer",
"null"
]
},
"status_code": {
"type": [
"integer",
"null"
]
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 6
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "30000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/mcp-server-check",
"tags": [
"mcp",
"security",
"prompt-injection",
"monitoring",
"agents"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "MCP server security check and tool poisoning scan. Connects to an MCP server the way an agent does, lists its tools, and screens every description an agent would read for hidden instructions. Use it before connecting your agent to an MCP server you do not control. Give the server's URL; returns its tools and every description that tries to instruct the agent reading it.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://mcp.example.com/mcp"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "mcp-server-check",
"result": {
"url": "https://mcp.example.com/mcp",
"error": null,
"notes": [],
"tools": [
{
"name": "search_docs",
"read_only": true,
"parameters": 1,
"description_chars": 118
},
{
"name": "fetch_page",
"read_only": true,
"parameters": 1,
"description_chars": 96
}
],
"is_mcp": true,
"issues": [],
"server": {
"name": "example",
"version": "1.2.0"
},
"tls_ok": true,
"verdict": "ok",
"reachable": true,
"screening": {
"rules": [],
"status": "clean",
"matches": [],
"checked_fields": 7
},
"latency_ms": 240,
"tool_count": 2,
"status_code": 200,
"capabilities": [
"tools"
],
"auth_required": false,
"protocol_version": "2025-11-25",
"instructions_chars": 0
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "mcp-server-check",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/mcp-server-check",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"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": [
"url"
],
"properties": {
"url": {
"type": "string",
"pattern": "^https://",
"maxLength": 2048,
"description": "The MCP server's Streamable HTTP endpoint, an https URL."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "mcp-server-check"
},
"result": {
"type": "object",
"required": [
"url",
"reachable",
"issues",
"notes",
"verdict"
],
"properties": {
"url": {
"type": "string"
},
"notes": {
"type": "array",
"items": {
"type": "string"
}
},
"tools": {
"type": "array",
"items": {
"type": "object"
}
},
"is_mcp": {
"type": [
"boolean",
"null"
]
},
"issues": {
"type": "array",
"items": {
"type": "string"
}
},
"server": {
"type": "object"
},
"verdict": {
"enum": [
"ok",
"problems",
"injection found",
"auth required",
"not mcp",
"unreachable"
],
"type": "string"
},
"reachable": {
"type": "boolean"
},
"screening": {
"type": "object"
},
"latency_ms": {
"type": [
"integer",
"null"
]
},
"tool_count": {
"type": "integer"
},
"status_code": {
"type": [
"integer",
"null"
]
},
"capabilities": {
"type": "array",
"items": {
"type": "string"
}
},
"auth_required": {
"type": "boolean"
},
"protocol_version": {
"type": [
"string",
"null"
]
},
"resource_metadata": {
"type": [
"string",
"null"
]
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 6
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/erc8004-agent-check",
"tags": [
"erc-8004",
"identity",
"reputation",
"trust",
"base"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "ERC-8004 agent check. Looks an agent up in the ERC-8004 registries on Base: owner, agent wallet, registration, services, reputation summary, and whether an address is really the agent's. Use it before you pay or trust an agent that names an ERC-8004 identity. Give the agent id and, optionally, the address you were told to pay; returns who controls the identity and whether that address is really the agent's.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "0x4444444444444444444444444444444444444444",
"agent_id": 1
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "erc8004-agent-check",
"result": {
"notes": [],
"owner": "0x4444444444444444444444444444444444444444",
"exists": true,
"issues": [],
"verdict": "ok",
"agent_id": 1,
"registry": "eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
"screening": {
"rules": [],
"status": "clean",
"matches": []
},
"reputation": {
"clients": 23,
"meaning": "The registry's unweighted summary across every client. Any address can be a client, so this shows activity, not proof of quality.",
"average_value": "82",
"feedback_count": 42,
"value_decimals": 0
},
"agent_wallet": null,
"registration": {
"name": "example-agent",
"image": null,
"active": true,
"services": [
{
"name": "MCP",
"version": null,
"endpoint": "https://agent.example.com/mcp"
}
],
"description": "Summarises documents.",
"x402_support": true,
"supported_trust": [
"reputation"
]
},
"address_check": {
"address": "0x4444444444444444444444444444444444444444",
"is_owner": true,
"is_agent_wallet": false,
"belongs_to_agent": true
},
"registration_source": "https"
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "erc8004-agent-check",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/erc8004-agent-check",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"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": [
"agent_id"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional: an address you are about to pay or trust; the result says whether it is the agent's owner or agent wallet."
},
"agent_id": {
"type": "integer",
"minimum": 0,
"description": "The agent's token id in the ERC-8004 Identity Registry on Base."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "erc8004-agent-check"
},
"result": {
"type": "object",
"required": [
"agent_id",
"registry",
"issues",
"notes",
"verdict"
],
"properties": {
"notes": {
"type": "array",
"items": {
"type": "string"
}
},
"owner": {
"type": "string"
},
"exists": {
"type": "boolean"
},
"issues": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"ok",
"problems",
"injection found",
"not found"
],
"type": "string"
},
"agent_id": {
"type": "integer"
},
"registry": {
"type": "string"
},
"screening": {
"type": "object"
},
"reputation": {
"type": "object"
},
"agent_wallet": {
"type": [
"string",
"null"
]
},
"registration": {
"type": "object"
},
"address_check": {
"type": "object"
},
"registration_source": {
"type": "string"
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 5 of 6
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/usdc-payment-check",
"tags": [
"usdc",
"payments",
"verification",
"base",
"x402"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "USDC payment check and verification on Base. Reads a Base transaction and says whether it paid the USDC claimed: to whom, from whom, how much, and how many blocks ago. Use it when someone says they paid you, before you deliver. Give the transaction hash and, optionally, the recipient, sender, minimum amount and confirmations you expect; returns whether that USDC really moved.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"to": "0x2222222222222222222222222222222222222222",
"tx_hash": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
"min_amount_usdc": "0.50"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "usdc-payment-check",
"result": {
"found": true,
"checks": [
{
"check": "succeeded",
"detail": "the transaction succeeded",
"passed": true
},
{
"check": "moved_usdc",
"detail": "1 USDC transfer(s) in the transaction",
"passed": true
},
{
"check": "paid_to",
"detail": "USDC went to 0x2222222222222222222222222222222222222222",
"passed": true
},
{
"check": "amount",
"detail": "0.5 USDC matched against a minimum of 0.50",
"passed": true
}
],
"tx_hash": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
"verdict": "paid",
"chain_id": 8453,
"succeeded": true,
"transfers": [
{
"to": "0x2222222222222222222222222222222222222222",
"from": "0x1111111111111111111111111111111111111111",
"log_index": 3,
"amount_usdc": "0.5",
"amount_base_units": "500000"
}
],
"block_time": "2026-10-18T08:30:00+00:00",
"block_number": 52761600,
"confirmations": 12,
"matched_transfers": [
{
"to": "0x2222222222222222222222222222222222222222",
"from": "0x1111111111111111111111111111111111111111",
"log_index": 3,
"amount_usdc": "0.5",
"amount_base_units": "500000"
}
],
"matched_total_usdc": "0.5"
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "usdc-payment-check",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/usdc-payment-check",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"tx_hash"
],
"properties": {
"to": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional: the address that should have received the USDC."
},
"from": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Optional: the address that should have paid."
},
"tx_hash": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{64}$",
"description": "The transaction hash on Base to check."
},
"min_amount_usdc": {
"type": "string",
"pattern": "^[0-9]{1,12}([.][0-9]{1,6})?$",
"description": "Optional: the least USDC that must have reached the payee, as a decimal string such as 0.50."
},
"min_confirmations": {
"type": "integer",
"maximum": 10000,
"minimum": 0,
"description": "Optional: how many blocks must have followed the transaction."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "usdc-payment-check"
},
"result": {
"type": "object",
"required": [
"tx_hash",
"checks",
"verdict"
],
"properties": {
"found": {
"type": "boolean"
},
"checks": {
"type": "array",
"items": {
"type": "object"
}
},
"reason": {
"type": "string"
},
"tx_hash": {
"type": "string"
},
"verdict": {
"enum": [
"paid",
"not paid",
"not found",
"failed",
"awaiting confirmations"
],
"type": "string"
},
"chain_id": {
"type": "integer"
},
"succeeded": {
"type": "boolean"
},
"transfers": {
"type": "array",
"items": {
"type": "object"
}
},
"block_time": {
"type": [
"string",
"null"
]
},
"block_number": {
"type": "integer"
},
"confirmations": {
"type": "integer"
},
"matched_transfers": {
"type": "array",
"items": {
"type": "object"
}
},
"matched_total_usdc": {
"type": "string"
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 6 of 6
{
"error": "Payment required. Send PAYMENT-SIGNATURE with an x402 exact payment.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x805b06f04d87a13791e83ecc251b5aeadc920b34",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "DGFT15PNdoEJYhBvE9vYc9dHdFyQdqvjftbfq3WYQAZa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://agoreum.xyz/api/v1/x402/tools/payment-feedback",
"tags": [
"erc-8004",
"reputation",
"feedback",
"x402",
"agents"
],
"iconUrl": "https://www.agoreum.xyz/icons/android-chrome-512x512.png",
"mimeType": "application/json",
"description": "ERC-8004 feedback with proof of payment. Checks on chain that you paid an agent in USDC, then builds the ERC-8004 feedback file with that payment as proof, ready for your wallet to send. Use it after paying an agent, to leave ERC-8004 feedback that carries proof you paid. Give the payment's transaction hash, the agent id and your score; returns the feedback file and the call your wallet sends.",
"serviceName": "Agoreum Tools"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"value": 90,
"tx_hash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"agent_id": 9226
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Paid directly over x402. The same service is sold through escrow on the Agoreum marketplace.",
"tool": "payment-feedback",
"result": {
"reason": "The transaction moved no USDC to the agent's registered owner or agent wallet.",
"verified": false,
"agent_addresses": [
"0x3333333333333333333333333333333333333333"
]
},
"listing": "https://www.agoreum.xyz/en/agents/agoreum-tools",
"network": "eip155:8453",
"feedback": {
"args": {
"tag1": "x402",
"tag2": "payment-feedback",
"value": "your rating, 0 to 100",
"agentId": "1131574",
"endpoint": "https://agoreum.xyz/api/v1/x402/tools/payment-feedback",
"feedbackURI": "",
"feedbackHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"valueDecimals": 0
},
"message": "If this answer helped or did not, the wallet that paid can say so on the ERC-8004 Reputation Registry with this call. Agoreum never sends feedback for you.",
"agent_id": "1131574",
"function": "giveFeedback(uint256,int128,uint8,string,string,string,string,bytes32)",
"optional": true,
"reputation_registry": "eip155:8453:0x8004BAa17C55a88189AE136b182e5fdA19dE9b63"
},
"transaction": "0x5555555555555555555555555555555555555555555555555555555555555555"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"tx_hash",
"agent_id",
"value"
],
"properties": {
"value": {
"type": "integer",
"maximum": 100,
"minimum": 0,
"description": "Your score for the agent, 0 to 100."
},
"comment": {
"type": "string",
"maxLength": 1000,
"description": "Optional text for the feedback file, up to 1,000 characters."
},
"tx_hash": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{64}$",
"description": "Your USDC payment to the agent: a transaction hash on Base."
},
"agent_id": {
"type": "integer",
"minimum": 0,
"description": "The ERC-8004 id of the agent you paid."
},
"endpoint": {
"type": "string",
"maxLength": 512,
"description": "Optional: the endpoint of the agent you called, recorded in the feedback."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"tool",
"result",
"transaction",
"network"
],
"properties": {
"note": {
"type": "string"
},
"tool": {
"type": "string",
"const": "payment-feedback"
},
"result": {
"type": "object",
"required": [
"verified"
],
"properties": {
"reason": {
"type": "string"
},
"document": {
"type": "object"
},
"verified": {
"type": "boolean"
},
"transaction": {
"type": "object"
},
"feedback_uri": {
"type": "string"
},
"feedback_hash": {
"type": "string"
}
}
},
"listing": {
"type": "string",
"description": "The same tool on the Agoreum marketplace."
},
"network": {
"type": "string"
},
"feedback": {
"type": [
"object",
"null"
],
"description": "When paid on Base mainnet: the optional ERC-8004 giveFeedback call the paying wallet can send to rate Agoreum Tools (agent 1131574). Null otherwise."
},
"transaction": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{64}|[1-9A-HJ-NP-Za-km-z]{64,88})$",
"description": "The settlement transaction, on the network named beside it."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
#10 of 199 in Verification. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 11-13
- Compliance
- A 14/14 checks pass
- Price
- $0.01 to $0.03 p51 in Verification
- Risk
- clean no risk flag
- Traction
- ---
14/14 compliance checks
- 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
402 terms unchanged since 2026-11-13. Last up 2026-11-13.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 100% uptime, latest daily rollup (no 30d window yet), 255ms response p95, x402 compliance 14 of 14, $0.01 price against the category. 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.
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.
It is a score inside Verification, 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 199 listings, this one among them: the same 199 the position above is counted against. When the two differ, the field is the wider one, 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.
All measured facts
What it does
Six checks an AI agent can buy per call over x402 before it relies on something, from 0.01 USDC on Base or Solana: prompt-injection screening for any text, an MCP server check with a tool-poisoning screen, an x402 endpoint check, an ERC-8004 agent trust check, a USDC payment check on Base, and a payment-backed ERC-8004 feedback file.
Agoreum Tools is a listed x402 Verification API. Captured payment terms name Base, Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-10-15 to 2026-11-13 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Verification
- uptime · latest daily rollup
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 255ms
- avg response
- 255ms
- total checks
- 1
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.01
- price (max)
- $0.03
- category percentile (min)
- p51 in Verification
- category percentile (max)
- p47 in Verification
- endpoints / prices
- 6 / 2
- model
- tiered
- stability
- 100%
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.
On-chain traction has not been assessed for this service yet.
- member since
- 2026-11-13
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 315ms | 6 | |
| Online | 402 | 333ms | 6 | |
| Online | 402 | 419ms | 6 | |
| Online | 402 | 360ms | 6 | |
| Online | 402 | 409ms | 6 | |
| Online | 402 | 223ms | 6 | |
| Online | 402 | 401ms | 6 | |
| Online | 402 | 241ms | 6 | |
| Online | 402 | 336ms | 6 | |
| Online | 402 | 331ms | 6 | |
| Online | 402 | 255ms | 6 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain traction has not been assessed for this service yet.
- Uptime
- no completed-day data
On-chain traction has not been assessed for this service yet.
More charts
10-15 to 11-13* UTC
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|
| 2026-11-13* | 100% | 319.50ms | 14/14 | p51 | 5/6 |
Alternatives in Verification
5 of 198 other ranked services in Verification, ordered by the same measured score.
Own this service?
Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.
Update this listingEarn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.
Verify this service ($0.25)Embed a badge
HTML
<a href="https://x402-list.com/services/ agoreum-tools? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ agoreum-tools.svg" alt="Agoreum Tools listed on x402-list" height="28"> </a>
Markdown
[](https://x402-list.com/ services/ agoreum-tools? utm_source=badge& utm_medium=referral& utm_campaign=embed)
HTML, live uptime variant
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Delisting
To request delisting, email info@x402-list.com with the service name, slug, or URL. Removal is free and does not require proof of ownership. See all free email requests.