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Free inspection of unsigned x402 terms. Default analysis version 1 retains Exact EVM checks; analysis_version 2 inspects documented EVM Exact, Upto, Batch Settlement and Auth-Capture profiles, declared limits and lifecycle fields. Unknown fields stay unchecked. No wallet, signature verification, live contract validation or settlement.
Optional exact terms. An atomic budget requires network and asset.
Decoded PaymentRequired object from HTTP or MCP structuredContent. No signed payment or credentials.
1 preserves the original Exact EVM report. 2 selects documented multi-scheme structural inspection, report version 2.0.0.
Tool list last changed Oct 23, 2026.
Free inspection of unsigned x402 terms. Default analysis version 1 retains Exact EVM checks; analysis_version 2 inspects documented EVM Exact, Upto, Batch Settlement and Auth-Capture profiles, declared limits and lifecycle fields. Unknown fields stay unchecked. No wallet, signature verification, live contract validation or settlement.
| Argument | Type | Description |
|---|---|---|
| expected | object | Optional exact terms. An atomic budget requires network and asset. |
| challenge | object | Decoded PaymentRequired object from HTTP or MCP structuredContent. No signed payment or credentials. |
| analysis_version | string | 1 preserves the original Exact EVM report. 2 selects documented multi-scheme structural inspection, report version 2.0.0. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"expected": {
"type": "object",
"properties": {
"asset": {
"type": "string"
},
"pay_to": {
"type": "string"
},
"scheme": {
"type": "string"
},
"network": {
"type": "string"
},
"max_amount_atomic": {
"type": "string"
}
},
"description": "Optional exact terms. An atomic budget requires network and asset.",
"additionalProperties": true
},
"challenge": {
"type": "object",
"description": "Decoded PaymentRequired object from HTTP or MCP structuredContent. No signed payment or credentials.",
"additionalProperties": {}
},
"analysis_version": {
"enum": [
"1",
"2"
],
"type": "string",
"description": "1 preserves the original Exact EVM report. 2 selects documented multi-scheme structural inspection, report version 2.0.0."
}
},
"additionalProperties": true
}Free comparison of two unsigned captures for the same resource and method. Default analysis version 1 retains Exact EVM; version 2 compares documented Exact, Upto, Batch Settlement and Auth-Capture fields, limits and lifecycle terms. Captures are caller declarations, with no authentication, fetching or payment. Unknown profiles remain non-comparable.
| Argument | Type | Description |
|---|---|---|
| current* | object | |
| baseline* | object | |
| analysis_version | string | 1 preserves the original Exact EVM comparison. 2 compares the pinned multi-scheme EVM profiles, including amount scope, authorizers, escrow, declared deadlines and fee bounds. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"baseline",
"current"
],
"properties": {
"current": {
"type": "object",
"required": [
"resource_url",
"method",
"captured_at",
"challenge"
],
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"POST",
"PUT",
"PATCH",
"DELETE",
"OPTIONS"
],
"type": "string"
},
"challenge": {
"type": "object",
"description": "Decoded unsigned PaymentRequired object, at most 32 offers. Analysis version 1 covers x402 v1/v2 Exact EVM; analysis version 2 covers the pinned x402 v2 EVM profiles.",
"additionalProperties": {}
},
"captured_at": {
"type": "string",
"description": "Caller-declared UTC capture time with Z suffix. Baseline may be old; current has a 24-hour age bound and both allow 60 seconds of future clock skew."
},
"resource_url": {
"type": "string",
"maxLength": 2048,
"description": "Exact HTTP(S) resource URL, including query. No credentials, secret query parameters or fragment."
}
},
"additionalProperties": true
},
"baseline": {
"type": "object",
"required": [
"resource_url",
"method",
"captured_at",
"challenge"
],
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"POST",
"PUT",
"PATCH",
"DELETE",
"OPTIONS"
],
"type": "string"
},
"challenge": {
"type": "object",
"description": "Decoded unsigned PaymentRequired object, at most 32 offers. Analysis version 1 covers x402 v1/v2 Exact EVM; analysis version 2 covers the pinned x402 v2 EVM profiles.",
"additionalProperties": {}
},
"captured_at": {
"type": "string",
"description": "Caller-declared UTC capture time with Z suffix. Baseline may be old; current has a 24-hour age bound and both allow 60 seconds of future clock skew."
},
"resource_url": {
"type": "string",
"maxLength": 2048,
"description": "Exact HTTP(S) resource URL, including query. No credentials, secret query parameters or fragment."
}
},
"additionalProperties": true
},
"analysis_version": {
"enum": [
"1",
"2"
],
"type": "string",
"description": "1 preserves the original Exact EVM comparison. 2 compares the pinned multi-scheme EVM profiles, including amount scope, authorizers, escrow, declared deadlines and fee bounds."
}
},
"additionalProperties": true
}Free local decoding of an ERC-8021 schema-2 x402 builder-code suffix from supplied calldata. Separates application, facilitator, services and facilitator-reported metadata. No transaction lookup, receipt confirmation, identity verification or payment. Malformed and unsupported suffixes remain explicit.
| Argument | Type | Description |
|---|---|---|
| calldata | string | Full caller-supplied transaction input as even-length 0x hex, at most 90,000 bytes. No URL, transaction hash, signature or receipt. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"calldata": {
"type": "string",
"pattern": "^0x(?:[a-fA-F0-9]{2})*$",
"maxLength": 180002,
"description": "Full caller-supplied transaction input as even-length 0x hex, at most 90,000 bytes. No URL, transaction hash, signature or receipt."
}
},
"additionalProperties": true
}Free description of a versioned synthetic task, its limits and coverage. Optional case selection; omitted selection describes the original confirmation case. No run, payment or wallet.
| Argument | Type | Description |
|---|---|---|
| case_id | string | Versioned synthetic case identifier. |
| variant | string | Budget case: budget_first or attempts_first. Linked repeats retain the previous variant. |
| case_version | string | Optional exact case version. A new run defaults to the current published version; a linked repeat retains its previous version. The resolved version is returned and stored. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"case_id": {
"type": "string",
"maxLength": 80,
"description": "Versioned synthetic case identifier."
},
"variant": {
"type": "string",
"maxLength": 32,
"description": "Budget case: budget_first or attempts_first. Linked repeats retain the previous variant."
},
"case_version": {
"type": "string",
"maxLength": 16,
"description": "Optional exact case version. A new run defaults to the current published version; a linked repeat retains its previous version. The resolved version is returned and stored."
}
},
"additionalProperties": false
}Execute the selected case's action: synthetic order, retry attempt, page retrieval or result submission. Identical keys and input replay the stored outcome. Calls, effects and simulated credits remain observable. No real payment.
| Argument | Type | Description |
|---|---|---|
| cursor | string | Partial-result page cursor: first or second. |
| run_id* | string | Run identifier from start_agent_test. |
| task_id* | string | Task identifier bound to this run. |
| quantity | integer | Synthetic quantity. The task specifies one unit. |
| action_key* | string | Caller-generated UUID. Identical key and payload identify the same synthetic operation. |
| record_ids | array | Synthetic record identifiers submitted by the caller, at most six. |
| action_type | string | Case action: attempt, get_page or submit_result. Not accepted by the original case. |
| access_token* | string | Secret short-lived run token. Omitted from reports. MCP client history may retain this argument. |
Searches the x402 resource catalogue and returns matching paid endpoints with their price, the chains they accept, and their 30-day usage from the catalogue's own counters: total calls, distinct paying addresses, the ratio between the two, and days since the last payment. Every figure is a count and carries its definition; no entry is scored, rated or labelled. Answers from a dated weekly snapshot and states which day it is from. Free.
| Argument | Type | Description |
|---|---|---|
| q | string | words to look for in the provider's own description, service name, URL and tags. Every word must appear as a whole word; there is no stemming, so "yield" does not match "yields". Omit to list the resources with the broadest paying base. |
| limit | integer | how many results to return, 1 to 50 (default 10) |
| network | string | chain id a resource must accept payment on, for example eip155:8453 |
| max_price | number | highest price per call in USDC to include |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"q": {
"type": "string",
"maxLength": 200,
"description": "words to look for in the provider's own description, service name, URL and tags. Every word must appear as a whole word; there is no stemming, so \"yield\" does not match \"yields\". Omit to list the resources with the broadest paying base."
},
"limit": {
"type": "integer",
"maximum": 50,
"minimum": 1,
"description": "how many results to return, 1 to 50 (default 10)"
},
"network": {
"type": "string",
"maxLength": 64,
"description": "chain id a resource must accept payment on, for example eip155:8453"
},
"max_price": {
"type": "number",
"minimum": 0,
"description": "highest price per call in USDC to include"
}
},
"additionalProperties": false
}Free OpenAPI manifest for Compass by 402rates. Contains this product and shared service information only.
| Argument | Type | Description |
|---|---|---|
| base_url | string | absolute origin to render into the manifest's servers block. Defaults to the configured public base URL. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"base_url": {
"type": "string",
"format": "uri",
"description": "absolute origin to render into the manifest's servers block. Defaults to the configured public base URL."
}
},
"additionalProperties": false
}Read operation records for a synthetic task. Observation timestamps and state describe the test service only. No claim about client receipt or overall agent reliability.
| Argument | Type | Description |
|---|---|---|
| run_id* | string | Run identifier from start_agent_test. |
| task_id* | string | Task identifier bound to this run. |
| access_token* | string | Secret short-lived run token. Omitted from reports. MCP client history may retain this argument. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"run_id",
"task_id",
"access_token"
],
"properties": {
"run_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Run identifier from start_agent_test."
},
"task_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Task identifier bound to this run."
},
"access_token": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{43}$",
"description": "Secret short-lived run token. Omitted from reports. MCP client history may retain this argument."
}
},
"additionalProperties": false
}Free catalogue of versioned synthetic cases: unavailable confirmation, retry credits and attempt limits, and partial results with continuation. No run, wallet or payment.
No arguments.
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {},
"additionalProperties": false
}Free capability and MCP tool catalogue for Compass by 402rates. Contains this product and shared service information only.
No arguments.
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {}
}Read calls, timestamps, operations and resulting state. Optional finalization freezes the run. A linked repeat includes the previous frozen report while retained. No score, certification or judgment of the agent.
| Argument | Type | Description |
|---|---|---|
| run_id* | string | Run identifier from start_agent_test. |
| finalize | boolean | True freezes the run and prevents further actions. Omitted means read only. |
| access_token* | string | Secret short-lived run token. Omitted from reports. MCP client history may retain this argument. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"run_id",
"access_token"
],
"properties": {
"run_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Run identifier from start_agent_test."
},
"finalize": {
"type": "boolean",
"description": "True freezes the run and prevents further actions. Omitted means read only."
},
"access_token": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{43}$",
"description": "Secret short-lived run token. Omitted from reports. MCP client history may retain this argument."
}
},
"additionalProperties": false
}Create a free bounded synthetic run without an account. An optional finalized previous run and its token link a repeat of the same case version and scenario. No real purchase. Caller model costs remain external.
| Argument | Type | Description |
|---|---|---|
| case_id* | string | Versioned synthetic case identifier. |
| variant | string | Budget case: budget_first or attempts_first. Linked repeats retain the previous variant. |
| access_token | string | Secret short-lived run token. Omitted from reports. MCP client history may retain this argument. |
| case_version | string | Optional exact case version. A new run defaults to the current published version; a linked repeat retains its previous version. The resolved version is returned and stored. |
| previous_run_id | string | Optional finalized run to repeat. Its access token authenticates this start. |
| configuration_changed | boolean | Optional caller-declared change since the previous run; not independently verified. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"case_id"
],
"properties": {
"case_id": {
"type": "string",
"maxLength": 80,
"description": "Versioned synthetic case identifier."
},
"variant": {
"type": "string",
"maxLength": 32,
"description": "Budget case: budget_first or attempts_first. Linked repeats retain the previous variant."
},
"access_token": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{43}$",
"description": "Secret short-lived run token. Omitted from reports. MCP client history may retain this argument."
},
"case_version": {
"type": "string",
"maxLength": 16,
"description": "Optional exact case version. A new run defaults to the current published version; a linked repeat retains its previous version. The resolved version is returned and stored."
},
"previous_run_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Optional finalized run to repeat. Its access token authenticates this start."
},
"configuration_changed": {
"type": "boolean",
"description": "Optional caller-declared change since the previous run; not independently verified."
}
},
"additionalProperties": false
}Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available networks for each transport. The receipt identifies the paid network and transaction. Business/professional use only. Terms: https://402rates.com/data-terms/ Price: 0.001 USDC per call over x402.
No arguments.
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {}
}{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"run_id",
"task_id",
"action_key",
"access_token"
],
"properties": {
"cursor": {
"type": "string",
"maxLength": 16,
"description": "Partial-result page cursor: first or second."
},
"run_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Run identifier from start_agent_test."
},
"task_id": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Task identifier bound to this run."
},
"quantity": {
"type": "integer",
"maximum": 10,
"minimum": 1,
"description": "Synthetic quantity. The task specifies one unit."
},
"action_key": {
"type": "string",
"pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$",
"description": "Caller-generated UUID. Identical key and payload identify the same synthetic operation."
},
"record_ids": {
"type": "array",
"items": {
"type": "string",
"maxLength": 64
},
"maxItems": 6,
"description": "Synthetic record identifiers submitted by the caller, at most six."
},
"action_type": {
"type": "string",
"maxLength": 24,
"description": "Case action: attempt, get_page or submit_result. Not accepted by the original case."
},
"access_token": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{43}$",
"description": "Secret short-lived run token. Omitted from reports. MCP client history may retain this argument."
}
},
"additionalProperties": false
}