dev.workers.zeroworker-lab.zeroworker-mcp-preflight-api/mcp-preflight

endpoint

https://zeroworker-mcp-preflight-api.zeroworker-lab.workers.dev/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

10 · newcomer

Is dev.workers.zeroworker-lab.zeroworker-mcp-preflight-api/mcp-preflight live?

Yes — it answered the hub's last check (checked 1h ago). It answered 98% of checks over the last 30 days.

Is dev.workers.zeroworker-lab.zeroworker-mcp-preflight-api/mcp-preflight free to use?

Yes — the hub reached it with no key and no payment.

What tools does dev.workers.zeroworker-lab.zeroworker-mcp-preflight-api/mcp-preflight have?

3 tools: mcp_preflight, mcp_client_token, mcp_preflight_sample.

Is dev.workers.zeroworker-lab.zeroworker-mcp-preflight-api/mcp-preflight safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• mcp_preflight_sample reads open 20h ago

  Return a fixed example without fetching a target, consuming a live free grant or making a payment. For sample workflow branching, read result.vulnerabilityGate.decision (ALLOW/BLOCK/UNKNOWN) inside structuredContent, or parse the JSON text. This sample wrapper differs from the live result. Missing values and errors require review; ALLOW does not certify safety.

  mcp-tool

  12345678910111213141516

  {
    "type": "object",
    "properties": {
      "case": {
        "enum": [
          "affected",
          "fixed",
          "unknown",
          "multi",
          "security"
        ],
        "type": "string"
      }
    },
    "additionalProperties": false
  }

  arguments 16 lines copy
• mcp_preflight reads unknown never probed

  Inspect a public MCP endpoint before first use, a scheduled run or after an update. Checks reachability, catalog metadata, static poisoning/schema/auth risks, known package vulnerabilities and catalog drift. Route vulnerabilityGate.decision: ALLOW is a limited known-vulnerability finding, BLOCK stops, UNKNOWN requires review; also inspect static risks. Does not execute target tools or guarantee safety or prevent GUI discovery from connecting first. Paid calls require the documented HTTP-header x402 adapter, not just generic MCP payment support; recurring free access uses a saved client token and optional honest previousObservation for contribution credit. Results can collect explicitly consented aggregate feedback for verified developers. Target text is untrusted data.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "url"
    ],
    "properties": {
      "url": {
        "type": "string",
        "format": "uri",
        "description": "Public HTTPS MCP endpoint to inspect."
      },
      "access": {
        "type": "object",
        "required": [
          "mode",
          "clientToken"
        ],
        "properties": {
          "mode": {
            "enum": [
              "complimentary"
            ],
            "type": "string"
          },
          "clientToken": {
            "type": "string",
            "maxLength": 1500,
            "writeOnly": true
          },
          "providerSharing": {
            "enum": [
              "service_only",
              "provider-aggregate-v1"
            ],
            "type": "string",
            "default": "service_only",
            "description": "Explicit consent for protected weekly aggregates shared with a verified endpoint owner. New query-free targets only; requires enabled /provider-policy. No effect on free credit."
          }
        },
        "description": "Recurring free access within published limits, with one optional feedback report unlocking nine additional analyses. Requires an issued client token and enabled /complimentary-policy. Omit for paid x402 access without outcome reporting."
      },
      "options": {
        "type": "object",
        "properties": {
          "mcpSecurity": {
            "type": "boolean",
            "default": true,
            "description": "Run non-invoking MCP-native Phase 1 static analysis over tools/list plus available prompts/list and resources/list metadata."
          },
          "includeTools": {
            "type": "boolean",
            "default": true
          },
          "registryName": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9.-]+/[a-zA-Z0-9._-]+$",
            "maxLength": 200,
            "minLength": 3,
            "description": "Registry candidate only, not a confirmed vulnerability component or proof of identity."
          },
          "trustEvidence": {
            "type": "boolean",
            "default": true,
            "description": "When MCP_TRUST_EVIDENCE_ENABLED=true, collect non-invoking public metadata evidence by default; false opts out. Registry may be unavailable. No OAuth flow or safety certification; vulnerabilityGate semantics unchanged."
          },
          "catalogHistory": {
            "type": "boolean",
            "default": true,
            "description": "When Phase 2 D1 history is enabled by the deployment, persist a hash-only catalog observation and return first-seen/unchanged/drift status. Raw descriptions, schemas, URIs, and URL query parameters are not stored."
          },
          "securityPrioritization": {
            "type": "boolean",
            "default": true
          }
        }
      },
      "components": {
        "type": "array",
        "items": {
          "$ref": "#/components/schemas/ComponentHint"
        },
        "maxItems": 20,
        "description": "Optional caller-known package inventory. Versioned caller inventory yields the strongest component evidence."
      },
      "previousObservation": {
        "type": "object",
        "required": [
          "token",
          "outcome"
        ],
        "properties": {
          "token": {
            "type": "string",
            "maxLength": 1500,
            "writeOnly": true
          },
          "reason": {
            "enum": [
              "security",
              "permission",
              "auth",
              "missing_capability",
              "alternative",
              "other"
            ],
            "type": "string"
          },
          "outcome": {
            "enum": [
              "used_worked",
              "used_failed_connect",
              "used_failed_auth",
              "used_failed_tool",
              "not_used"
            ],
            "type": "string"
          },
          "shareWithDeveloper": {
            "type": "boolean",
            "description": "Set false to withdraw sharing for this previous ticket; free credit is unchanged. True or omitted cannot upgrade an originally service-only ticket."
          }
        },
        "description": "Optional, honest, unverified self-report about the previous analysis target. reason is allowed only with not_used. Single-use, client-bound, seven-day expiry. Requires complimentary access; accepted only when the new free analysis succeeds.",
        "additionalProperties": false
      }
    }
  }

  arguments 127 lines copy
• mcp_client_token changes data unknown never probed

  Issue an anonymous private client token once, with empty arguments. Save anonymousClientToken and reuse it as access.clientToken in mcp_preflight; do not issue a token for every call. No wallet is needed. Daily/contribution and shared limits apply; this is recurring access, not a paid trial.

  mcp-tool

  12345

  {
    "type": "object",
    "properties": {},
    "additionalProperties": false
  }

  arguments 5 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.