lookup_substack_subscriber
shallowcom.youspot/youspot · Verify this server
Whether one email address subscribes to the user's Substack, read from Substack right now. A hit stamps the plan and status onto the matching contact; with `create` true a hit also becomes a new contact when nobody holds the address yet. Use it for 'is x@y.com a subscriber?'.
1 trials · measured 22 days ago
lookup_substack_subscriber scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against com.youspot/youspot, measured 16 Sept 2026 under methodology v0.2.0. Every measured component scored 100.
Component breakdown
| Component | Weight | Value |
|---|---|---|
| Reliability | 35% | not applicable |
| Schema integrity | 25% | 100.0 |
| Failure behaviour | 15% | not applicable |
| Latency | 15% | not applicable |
| Concurrency | 10% | not applicable |
Tool details
- Transport
- remote
- Credential class
- gated
- Input schema
- not declared
- Output schema
- not declared
- Side-effect classification
- unclassified
Score history
| Day | Score | Tier | Methodology |
|---|---|---|---|
| 2026-09-16 | 100.0 | shallow | v0.2.0 |
Probe evidence
| Probe | Outcomes |
|---|---|
| schema_integrity | pass: 1 |
Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.
Embed this score
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[](https://vouch.tools/tools/6f044261-73d5-4453-a633-e7d096ddf64e)