# TrollBridge Verify Independent Channel

> TrollBridge Verify Independent Channel is a paid API for AI agents from mini-tollbooth.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Checks whether a proposed verification channel is independent from the write channel used in a transaction, to prevent replay or channel-reuse attacks.

## Facts

- Endpoint: GET https://mini-tollbooth.onrender.com/verify-independent?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trollbridge-verify-independent-channel-566b3cc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xa1CoqRXm1liU1rVv5HNV

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 trollbridge-verify-independent-channel-566b3cc6
```

Example prompt: Can you check whether the verification channel I'm proposing (REST over api.example.com) is actually independent from the write channel my agent used (WebSocket over ws.example.com session xyz123) — I need to make sure they're not the same path before I proceed?

## When to prefer this

Choose this endpoint when an AI agent or automated workflow needs to confirm that the channel used to verify a write operation is genuinely separate from the write channel itself — critical for preventing replay attacks, channel-confusion exploits, or man-in-the-middle scenarios in multi-step agentic transactions. Prefer this over generic security checks when the specific threat model is channel reuse or channel conflation.

## Known failure modes

- Missing required fields — if write_channel or proposed_verify_channel omit all of transport/host/interface, the call will fail validation
- Ambiguous channel descriptors — overlapping optional fields may produce inconclusive results
- Service unavailability on Render free tier — cold starts may cause latency or timeout
- Identical channels submitted — will return a non-independent verdict, not an error
- Malformed object structure — non-object values for channel fields will be rejected

## How this service works

The insurance booth for AI agents, with Mini's Agent Supply Store on the side of the road. One hundred checkpoints: pre-transaction safety lanes (honeypot, approval-risk, rug-score, receipt-check, tx-dryrun, permit-scan, airdrop-verdict, deployer-history, wallet-watch, secret-scan at $0.02 USDC per call; the protection tier — /contract-check, /approval-screen, /tx-plain-english, /honeypot-check, /tx-simulate, /redteam, /skill-scan, /verdict, /egress-audit, /tool-gate, /airlock, /repo-scan, /prove, /task-scope — at $0.10; the one-call /shield don't-get-rugged screen at $0.25; the full /preflight bundle at $0.05), bounty intel (bounties, fresh, verdicts, deadlines, sweepstakes, opportunities) at $0.02 USDC per call, trader intel (/prices and /quant at $0.02; /enrich and /token-check at $0.05; /contract-check and /honeypot-check at $0.10; /sec-facts at $0.05), market intel (/markets and /search at $0.05; /grants at $0.02), DeFi intel (/yields and /new-pairs at $0.05; /gas and /defi at $0.02), AI intel (/models at $0.02), agent-ops intel (/prompt-cost, /model-picks, /rpc-speed, /terms-tldr, /scrape, /gigs, /retry-verify, /idempotency, /verify-independent at $0.02; /site-watch, /wallet-check, /code-run, /regulatory-pack, /sage, /cron-watch, /caveat-check, /tripwire, /escrow, /trust, /bridge-fees, /dao-votes, /dev-activity, /dex-arb, /dydx-perps, /funding-rates, /gas-predict, /hack-tracker, /long-short-ratio, /lp-yields, /mev-scan, /open-interest, /perp-basis, /polymarket-odds, /rwa-watch, /sentiment, /stablecoin-flows, /tokenomics, /top-movers, /whale-watch, and /yield-stable at $0.05; /approval-screen, /tx-plain-english, /tx-simulate, and /task-scope at $0.10; /scam-scan deep scan at $5.00 or 30-day subscription at $30.00), supply store (/road-pack combo meal at $0.05; curated datasets, the /audit-prep pre-audit review, and the /prove-state symbolic-execution run at $1.00; the /audit AI-agent audit at $25.00). Every lane answers before money moves — heuristic verdicts, not audits. Don't get rugged.

## Output

Returns a JSON object indicating whether the proposed verification channel is considered independent from the write channel, likely including a verdict, any overlap or similarity signals between channel attributes (transport, host, interface, session, cache), and potential risk flags if the channels share identifying properties.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "write_channel",
  "proposed_verify_channel"
 ],
 "properties": {
  "write_channel": {
   "type": "object",
   "description": "{interface?, transport?, host?, session?, cache?} — the channel the write used. At least one of transport/host/interface — required."
  },
  "proposed_verify_channel": {
   "type": "object",
   "description": "{interface?, transport?, host?, session?, cache?} — the channel proposed for verifying. At least one of transport/host/interface — required."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trollbridge-verify-independent-channel-566b3cc6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mini-tollbooth.onrender.com](https://www.zero.xyz/host/mini-tollbooth.onrender.com/llms.txt)