# MCP Resource Link Target Grants Resolver

> MCP Resource Link Target Grants Resolver is a paid API for AI agents from detect.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-20).

Validates and resolves supplied resource link references against permitted schemes, origins, and path boundaries defined in an allow-list policy.

## Facts

- Endpoint: POST https://detect.halowerk.com/v1/integration/mcp-resource-link-target-grants?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mcp-resource-link-target-grants-resolver-f94ef619
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5kQyH1ynVA-RPLSwcy4QG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mcp-resource-link-target-grants-resolver-f94ef619 -d '<json body>'
```

Example prompt: Check these resource links against our allowed schemes (https, wss) and permitted origins (api.example.com, cdn.example.com with paths under /assets/) — tell me which links are granted and which are blocked.

## When to prefer this

Use this endpoint when you need to enforce structured allow-list policies on resource URLs — specifically when you have explicit scheme, origin, and path constraints to check against. Prefer this over generic URL validation when your policy is multi-dimensional (scheme + origin + path) and you need a machine-readable grant/deny decision per link.

## Known failure modes

- Missing required artifact fields (resource_links, allowed_schemes, or allowed_targets) returns validation error
- Malformed URL in resource_links may result in parse failure or rejection
- Empty allowed_targets or allowed_schemes results in all links being denied
- Ambiguous or overlapping path boundary declarations may produce unexpected grant results
- Payment not attached or insufficient USDC balance returns 402 Payment Required

## How this service works

Gelieferte Ressourcenverweise gegen freigegebene Schemes, Origins und Pfadgrenzen aufloesen.

## Output

Returns a structured grant resolution indicating for each supplied resource link whether it falls within the declared allowed schemes, permitted origins, and path boundaries, effectively partitioning links into authorized and unauthorized sets.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "artifact": {
   "type": "object",
   "required": [
    "allowed_schemes",
    "allowed_targets",
    "resource_links"
   ],
   "properties": {
    "resource_links": {},
    "allowed_schemes": {},
    "allowed_targets": {}
   },
   "additionalProperties": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mcp-resource-link-target-grants-resolver-f94ef619/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from detect.halowerk.com](https://www.zero.xyz/host/detect.halowerk.com/llms.txt)