Assignment solver — exact minimum-cost worker-to-task matching for resource allo
Assignment solver — exact minimum-cost worker-to-task matching for resource allocation, with deterministic choices and a primal/dual optimality certificate.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
663 msmedian answer time
$0.005listed price per call
$0.005price 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://decision-solver.use.x402atlas.com/assignment
| Category | Everything else |
|---|---|
| Provider host | decision-solver.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 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 | $0.005 | 663 ms |
Example input (from the provider)
{
"body": {
"costs": [
[
4,
1,
3
],
[
2,
0,
5
],
[
3,
2,
2
]
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"costs": {
"description": "Rectangular worker-by-task cost matrix; workers <= tasks and each worker receives one distinct task",
"items": {
"description": "One worker's signed integer costs in task-index order; every row must have the same length",
"items": {
"description": "Cost of assigning this worker to this task",
"maximum": 1000000000,
"minimum": -1000000000,
"type": "integer"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
}
},
"required": [
"costs"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"_atlas": {
"additionalProperties": false,
"description": "Atlas documentation and related-route metadata added after deployment",
"properties": {
"docs": {
"description": "Documentation URL for this bridge",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"related": {
"description": "Bounded related Atlas routes",
"items": {
"additionalProperties": false,
"description": "One related Atlas route",
"properties": {
"bridge": {
"description": "Related bridge name",
"maxLength": 64,
"type": "string"
},
"docs": {
"description": "Related bridge documentation URL",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"summary": {
"description": "Short capability summary",
"maxLength": 256,
"type": "string"
},
"url": {
"description": "Related route URL",
"format": "uri",
"maxLength": 512,
"type": "string"
}
},
"required": [
"bridge",
"url",
"docs",
"summary"
],
"type": "object"
},
"maxItems": 3,
"type": "array"
}
},
"required": [
"docs"
],
"type": "object"
},
"algorithm_version": {
"const": "hungarian-min-v1",
"description": "Pinned deterministic algorithm and certificate contract",
"type": "string"
},
"certificate": {
"additionalProperties": false,
"description": "Independently checkable primal/dual certificate for the padded square matrix",
"properties": {
"column_potentials": {
"description": "Signed column dual potentials",
"items": {
"description": "Signed dual potential value",
"type": "integer"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
},
"padded_assignment": {
"description": "Task index matched to each padded worker",
"items": {
"description": "Zero-based padded task index",
"maximum": 63,
"minimum": 0,
"type": "integer"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
},
"row_potentials": {
"description": "Signed row dual potentials",
"items": {
"description": "Signed dual potential value",
"type": "integer"
},
"maxItems": 64,
"minItems": 1,
"type": "array"
}
},
"required": [
"padded_assignment",
"row_potentials",
"column_potentials"
],
"type": "object"
},
"objective": {
"const": "minimum_total_cost",
"description": "The solver minimizes the sum of selected assignment costs",
"type": "string"
},
"objective_value": {
"description": "Proven minimum total cost",
"maximum": 64000000000,