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Bounty Engineer Tool Contract Bridge
x402
Bounty Engineer Tool Contract Bridge is a paid API for AI agents from bounty-engineer-x402-prod.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Validates whether a set of candidate tool definitions are schema-compatible with a required JSON Schema contract, returning per-candidate compatibility reports and issue lists.
Price / call$0.02
Success—
StatusUnknown
How this service works
Machine-buyable infrastructure for autonomous agents: API cost routing, margin optimization, funding-rate data, webpage extraction, result verification, spend controls, retry planning, state, tender search and GitHub bounty intelligence.
Output
A JSON object containing an 'ok' flag, the mode identifier 'tool_contract_bridge', a per-candidate array with compatibility status (true/false), a list of specific issues (each with a code and path), counts of issues and properties, extra required fields, a list of compatible candidate IDs, and a limitations notice about the scope of the JSON Schema subset checked.
Example use cases
Screen tools before agent deployment
“Before I deploy my agent, I need to check which of these 10 candidate tool definitions actually satisfy the required contract schema — can you run them all through the tool contract bridge and tell me which ones are compatible and what issues the others have?”
Debug a failing tool integration
“My tool definition keeps getting rejected by the agent runtime — can you validate it against this required schema and show me exactly which fields are missing or incompatible so I can fix it?”
Audit multiple vendor tool specs
“I've got 15 tool specs from different vendors and I need to know which ones conform to our required interface schema before I add them to our agent marketplace — run them all through the contract validator and give me a compatibility report for each one.”
Technical details
Endpoint
POSThttps://bounty-engineer-x402-prod.onrender.com/v1/tool-contract-bridge?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically verify that candidate tool definitions conform to a required JSON Schema contract before wiring them into an agent — especially useful when screening batches of up to 60 tools from different sources. Prefer this over manual schema comparison or generic JSON validators when you need structured per-candidate issue reports with field-level diagnostics. Not suitable for proving semantic equivalence between tools, only structural/schema compatibility.
Side effects
- Fewer than 1 or more than 60 candidates causes a validation error
- Malformed required_schema object causes a parse error
- Schema features outside the supported conservative JSON Schema subset may produce inaccurate compatibility results
- Network or service unavailability on the Render.com deployment returns a connection error
- Payment failure via x402 protocol blocks the request before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| candidates | array | |
| required_schema | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"mode": "tool_contract_bridge",
"candidates": [
{
"id": "reader",
"issues": [],
"compatible": true,
"issue_count": 0,
"extra_required_fields": [],
"candidate_property_count": 1
},
{
"id": "other",
"issues": [
{
"code": "missing_candidate_property",
"path": "/url"
},
{
"code": "candidate_requires_extra_field",
"path": "/query"
}
],
"compatible": false,
"issue_count": 2,
"extra_required_fields": [
"query"
],
"candidate_property_count": 1
}
],
"limitations": [
"Checks a conservative supported JSON Schema subset and required-field compatibility. It does not prove semantic equivalence between tools."
],
"compatible_candidates": [
"reader"
]
}
}Tags
x402
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