# Abandoned Tool Detector

> Abandoned Tool Detector is a paid API for AI agents from phion.systems, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Assesses whether an AI agent tool or external service is still reachable and whether its observations are fresh or stale

## Facts

- Endpoint: POST https://phion.systems/v1/paid/trust/abandoned-tool-detector
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/abandoned-tool-detector-71e4c467
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sMqCFpRXsLBXl64_bbCmC

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 abandoned-tool-detector-71e4c467 -d '<json body>'
```

Example prompt: Before running the next step, can you check whether the tool at https://api.example.com/data-feed is still reachable and whether its last observation is fresh enough to trust — I need to know if it's been abandoned or gone stale?

## When to prefer this

Choose this endpoint when an AI agent needs to proactively verify that tools and external services in its pipeline are still active and trustworthy before relying on them — especially when acting on cached or previously observed tool outputs. It is the right choice when staleness of observations matters (e.g., financial data, sensor feeds, live APIs) and when agents need to detect zombie or abandoned endpoints before committing to downstream actions that depend on them.

## Known failure modes

- Tool endpoint is unreachable due to network issues rather than abandonment — may produce false positive abandonment signal
- No prior observation timestamp available — staleness assessment may be incomplete or unavailable
- Tool requires authentication that the detector cannot supply — reachability check may incorrectly report as unreachable
- Rate limiting by the target tool endpoint during reachability probe — inconclusive result returned
- Ambiguous abandonment signal when a tool is reachable but has no recent observations to assess

## How this service works

Assess tool reachability and observation staleness

## Output

Returns an assessment of the specified tool's reachability (whether the endpoint is live and responding) and observation staleness (how outdated its most recent data or responses are), along with an abandonment verdict indicating whether the tool can still be trusted for agent use.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/abandoned-tool-detector-71e4c467/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phion.systems](https://www.zero.xyz/host/phion.systems/llms.txt)