Inferrail turns payload-free, already-incurred economic events — inference/token
Inferrail turns payload-free, already-incurred economic events — inference/token cost, tool calls, search — into a normalized cost receipt for one unit of agent work: known total cost, a breakdown by resource class and supplier, unknown-cost count, and price provenance, without requiring prompt or response content. Used for AI job cost analysis, LLM spend tracking, and unit economics.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
659 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://work.tryinferrail.com/invoke
| Category | Market data |
|---|---|
| Provider host | work.tryinferrail.com |
| Networks | eip155:84532 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 659 ms |
Example input (from the provider)
{
"body": {
"events": [
{
"currency": "USD",
"known_cost_usd": "0.02",
"price_basis": "LIST_PRICE_PUBLISHED",
"resource_class": "inference",
"status": "success",
"supplier": "example-supplier"
}
],
"outcome_status": "success",
"work_id": "example-work-001"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"events": {
"items": {
"properties": {
"currency": {
"const": "USD",
"type": "string"
},
"known_cost_usd": {
"type": [
"string",
"null"
]
},
"price_basis": {
"enum": [
"LIST_PRICE_PUBLISHED",
"PROVIDER_REPORTED_ESTIMATE",
"UNKNOWN"
],
"type": "string"
},
"resource_class": {
"type": "string"
},
"status": {
"enum": [
"error",
"partial",
"success"
],
"type": "string"
},
"supplier": {
"type": "string"
}
},
"required": [
"resource_class",
"supplier",
"price_basis",
"status"
],
"type": "object"
},
"minItems": 1,
"type": "array"
},
"outcome_status": {
"type": [
"string",
"null"
]
},
"work_id": {
"type": "string"
}
},
"required": [
"work_id",
"events"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"commercial_receipt": {
"properties": {
"capability": {
"type": "string"
},
"capability_version": {
"type": "string"
},
"currency": {
"type": "string"
},
"invocation_id": {
"type": "string"
},
"network": {
"type": "string"
},
"network_class": {
"type": "string"
},
"purchase_id": {
"type": "string"
},
"quoted_amount_usd": {
"type": "string"
},
"rail": {
"type": "string"
},
"status": {
"type": "string"
},
"work_id": {
"type": "string"
}
},
"required": [
"purchase_id",
"invocation_id",
"capability",
"rail",
"network",
"quoted_amount_usd",
"currency",
"work_id",
"status"
],
"type": "object"
},
"newly_charged": {
"type": "boolean"
},
"newly_executed": {
"type": "boolean"
},
"result": {
"properties": {
"breakdown_by_resource_class": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"breakdown_by_supplier": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"capability_version": {
"type": "string"
},
"event_count": {
"type": "integer"
},
"exact_total_known": {
"type": "boolean"
},
"known_total_cost_usd": {
"type": [
"string",
"null"
]
},
"outcome_status": {
"type": [
"string",
"null"
]
},
"price_provenance": {
"additionalProperties": {
"type": "integer"
},
"type": "object"
},
"unknown_event_count": {
"type": "integer"
},
"work_id": {
"type": "string"
}
},
"required": [
"work_id",
"known_total_cost_usd",
"exact_total_known",
"event_count",
"unknown_event_count",
"breakdown_by_resource_class",
"breakdown_by_supplier",
"price_provenance",
"outcome_status",
"capability_version"
],
"type": "object"
}