AgentShelf
payment-ready until 2026-10-15
imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed
Catalog of small pay-per-call utilities from Syntexa, including hash digests in many algorithm and encoding variants and favicon extraction.
Call it x402 v2
x402 v2
- Base URL
- https://agentshelf.syntexa.ch
- Payment
- x402 v2, header channel
$ curl -i -X POST 'https://agentshelf.syntexa.ch/v1/digest-blake2s256-base32-latin1' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 10 paid routes on agentshelf.syntexa.ch
POST/v1/digest-blake2s256-base32-latin1 Base$0.005since 10-07
POST/v1/digest-blake2s256-base32-rawhex Base$0.006since 10-07
POST/v1/digest-blake2s256-base32-utf16 Base$0.004since 10-07
POST/v1/digest-blake2s256-base64url-latin1 Base$0.002since 10-07
POST/v1/digest-blake2s256-base64url-rawhex Base$0.003since 10-07
POST/v1/digest-blake2s256-base64url-utf16 Base$0.001since 10-07
POST/v1/digest-ripemd160-hex-latin1 Base$0.008since 10-07
POST/v1/digest-ripemd160-hex-rawhex Base$0.009since 10-07
2 more in Example 402 response
Prices as captured in the 402 response: median $0.0045 across the 10 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | No description | $0.005 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.006 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.004 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.002 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.003 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.001 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.008 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.009 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.007 | Base | USDC | header | since 10-07 |
| POST | / | No description | $0.002 | Base | USDC | header | since 10-07 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 10 payloads captured by the monitor.
216 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/favicon-meta",
"mimeType": "application/json",
"description": "Call when an agent needs favicon and apple-touch icons extracted from a public page or HTML (SSRF-safe). Send JSON {\"html\":\"<link rel=\\\"icon\\\" href=\\\"https://example.com/favicon.ico\\\" sizes=\\\"32x32\\\">\"}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/favicon-meta first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"html": "<link rel=\"icon\" href=\"https://example.com/favicon.ico\" sizes=\"32x32\">"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"icons": [
{
"rel": "icon",
"href": "https://example.com/favicon.ico",
"sizes": "32x32"
}
],
"billed": true,
"warnings": [],
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"html": "<link rel=\"icon\" href=\"https://example.com/favicon.ico\" sizes=\"32x32\">"
}
],
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"minLength": 8,
"description": "Public http(s) URL to fetch. When html is also sent, this is only the base for relative links. Provide url or html."
},
"html": {
"type": "string",
"examples": [
"<link rel=\"icon\" href=\"https://example.com/favicon.ico\" sizes=\"32x32\">"
],
"maxLength": 200000,
"minLength": 1,
"description": "HTML to parse locally instead of fetching. When both html and url are set, html is used. Provide html or url."
}
},
"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",
"examples": [
{
"ok": true,
"icons": [
{
"rel": "icon",
"href": "https://example.com/favicon.ico",
"sizes": "32x32"
}
],
"billed": true,
"warnings": [],
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"icons"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"icons": {
"type": "array",
"items": {
"type": "object",
"required": [
"rel",
"href"
],
"properties": {
"rel": {
"type": "string"
},
"href": {
"type": "string"
},
"sizes": {
"type": "string"
}
},
"additionalProperties": false
},
"examples": [
[
{
"rel": "icon",
"href": "https://example.com/favicon.ico",
"sizes": "32x32"
}
]
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (9)
Captured payload 2 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "9000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-ripemd160-hex-rawhex",
"mimeType": "application/json",
"description": "Call when an agent needs a ripemd160 digest of hex bytes, encoded as hex. Send JSON {\"text\":\"68656c6c6f\"}. Exact $0.009 USDC on Base. Try unpaid POST /v1/sandbox/digest-ripemd160-hex-rawhex first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "68656c6c6f"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "ripemd160-hex-rawhex",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "68656c6c6f"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"68656c6c6f"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "ripemd160-hex-rawhex",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"ripemd160-hex-rawhex"
]
},
"encoding": {
"type": "string",
"examples": [
"hex"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"ripemd160"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "8000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-ripemd160-hex-latin1",
"mimeType": "application/json",
"description": "Call when an agent needs a ripemd160 digest of latin1 bytes, encoded as hex. Send JSON {\"text\":\"hello\"}. Exact $0.008 USDC on Base. Try unpaid POST /v1/sandbox/digest-ripemd160-hex-latin1 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "ripemd160-hex-latin1",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "ripemd160-hex-latin1",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"ripemd160-hex-latin1"
]
},
"encoding": {
"type": "string",
"examples": [
"hex"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"ripemd160"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "7000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-ripemd160-hex-utf16",
"mimeType": "application/json",
"description": "Call when an agent needs a ripemd160 digest of utf16le bytes, encoded as hex. Send JSON {\"text\":\"hello\"}. Exact $0.007 USDC on Base. Try unpaid POST /v1/sandbox/digest-ripemd160-hex-utf16 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "ripemd160-hex-utf16",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "ripemd160-hex-utf16",
"encoding": "hex",
"warnings": [],
"algorithm": "ripemd160",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"ripemd160-hex-utf16"
]
},
"encoding": {
"type": "string",
"examples": [
"hex"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"ripemd160"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 5 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "6000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base32-rawhex",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of hex bytes, encoded as base32. Send JSON {\"text\":\"68656c6c6f\"}. Exact $0.006 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base32-rawhex first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "68656c6c6f"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base32-rawhex",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "68656c6c6f"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"68656c6c6f"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base32-rawhex",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base32-rawhex"
]
},
"encoding": {
"type": "string",
"examples": [
"base32"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 6 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base32-latin1",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as base32. Send JSON {\"text\":\"hello\"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base32-latin1 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base32-latin1",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base32-latin1",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base32-latin1"
]
},
"encoding": {
"type": "string",
"examples": [
"base32"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 7 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "4000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base32-utf16",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of utf16le bytes, encoded as base32. Send JSON {\"text\":\"hello\"}. Exact $0.004 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base32-utf16 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base32-utf16",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base32-utf16",
"encoding": "base32",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base32-utf16"
]
},
"encoding": {
"type": "string",
"examples": [
"base32"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 8 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-rawhex",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of hex bytes, encoded as base64url. Send JSON {\"text\":\"68656c6c6f\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base64url-rawhex first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "68656c6c6f"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-rawhex",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "68656c6c6f"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"68656c6c6f"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-rawhex",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base64url-rawhex"
]
},
"encoding": {
"type": "string",
"examples": [
"base64url"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 9 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-latin1",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as base64url. Send JSON {\"text\":\"hello\"}. Exact $0.002 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base64url-latin1 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-latin1",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-latin1",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base64url-latin1"
]
},
"encoding": {
"type": "string",
"examples": [
"base64url"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 10 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-utf16",
"mimeType": "application/json",
"description": "Call when an agent needs a blake2s256 digest of utf16le bytes, encoded as base64url. Send JSON {\"text\":\"hello\"}. Exact $0.001 USDC on Base. Try unpaid POST /v1/sandbox/digest-blake2s256-base64url-utf16 first."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"text": "hello"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-utf16",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
}
},
"schema": {
"type": "object",
"$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": [
{
"text": "hello"
}
],
"required": [
"text"
],
"properties": {
"key": {
"type": "string",
"maxLength": 512,
"minLength": 1,
"description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
},
"text": {
"type": "string",
"examples": [
"hello"
],
"maxLength": 100000,
"minLength": 1,
"description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
}
},
"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",
"examples": [
{
"ok": true,
"billed": true,
"digest": "blake2s256-base64url-utf16",
"encoding": "base64url",
"warnings": [],
"algorithm": "blake2s256",
"receipt_id": "rcpt_01EXAMPLE000000000000000"
}
],
"required": [
"ok",
"receipt_id",
"billed",
"algorithm",
"encoding",
"digest"
],
"properties": {
"ok": {
"type": "boolean",
"const": true,
"examples": [
true
]
},
"billed": {
"type": "boolean",
"examples": [
true
]
},
"digest": {
"type": "string",
"examples": [
"blake2s256-base64url-utf16"
]
},
"encoding": {
"type": "string",
"examples": [
"base64url"
]
},
"warnings": {
"type": "array",
"items": {
"type": "string"
},
"default": [],
"examples": [
[]
]
},
"algorithm": {
"type": "string",
"examples": [
"blake2s256"
]
},
"receipt_id": {
"type": "string",
"examples": [
"rcpt_01EXAMPLE000000000000000"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
89/100 Solid
#7 of 50 in Other. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 10-08
- Compliance
- A 14/14 checks pass
- Price
- $0.001 to $0.009 p14 in Other
- Risk
- clean no risk flag
- Traction
- $0.00 30d 0 buyers
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 2026-10-08. Last up 2026-10-08.
── 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), 187ms response p95, x402 compliance 14 of 14, $0.001 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.
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 Other, 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 50 listings, this one among them: the same 50 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.
Traction is a conservative undercount.
All measured facts
What it does
Catalog of small pay-per-call utilities from Syntexa, including hash digests in many algorithm and encoding variants and favicon extraction.
AgentShelf is a listed x402 Other API. Captured payment terms name Base. 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: 2026-09-09 to 2026-10-08 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 · Other
- uptime · latest daily rollup
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 187ms
- avg response
- 187ms
- 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)
- $0.001
- price (max)
- $0.009
- category percentile (min)
- p14 in Other
- category percentile (max)
- p21 in Other
- endpoints / prices
- 10 / 9
- 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.
- assessment volume 30d
- $0.00
- exact assessment volume 30d (USD)
- 0
- assessment recorded at (UTC)
- 2026-10-08T00:03:22.776Z
- 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
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- -
- max settlement 30d
- -
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.
- member since
- 2026-10-07
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 162ms | 10 | |
| Online | 402 | 163ms | 10 | |
| Online | 402 | 246ms | 10 | |
| Online | 402 | 202ms | 10 | |
| Online | 402 | 249ms | 10 | |
| Online | 402 | 270ms | 10 | |
| Online | 402 | 147ms | 10 | |
| Online | 402 | 194ms | 10 | |
| Online | 402 | 194ms | 10 | |
| Online | 402 | 187ms | 10 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain volume daily snapshots, USD 30d: $0.00, peak $5.43 on 09-23
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime no completed-day data
- Volume 30d
- $0.00
- Uptime
- no completed-day data
More charts
Response time daily average, ms min 211ms, avg 211ms, max 211ms
09-09 to 10-08* 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.
Daily snapshot total, 30d: $6.42, peak $5.43 on 09-23. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-09-09 to 2026-10-08 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-09-16 | $0.02 | 1 | 1 | no data | no data | no data | no data | no data |
| 2026-09-17 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-18 | $0.05 | 1 | 5 | no data | no data | no data | no data | no data |
| 2026-09-19 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-20 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-21 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-22 | $0.92 | 1 | 200 | no data | no data | no data | no data | no data |
| 2026-09-23 | $5.43 | 1 | 983 | no data | no data | no data | no data | no data |
| 2026-09-24 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-25 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-26 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-27 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-28 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-29 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-30 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-01 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-02 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-03 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-04 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-05 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-06 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-07 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-08* | no data | no data | no data | 100% | 211.13ms | 14/14 | p14 | 2/6 |
Alternatives in Other
5 of 49 other ranked services in Other, ordered by the same measured score.
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