Heystack
heystacks.
Search, read, and publish public Markdown documents and spreadsheets.
Live
Last successful check: 30 Oct 2026, 01:13 UTC.
- answered, last 24 hours
- 100%
- answered, last 30 days
- 100%
At heystacks.com, its best endpoint.
How addrbook checks →Evidence
2 of 4 shown
Answers when askedShown
Answered a check 9 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 3 days; 30 are needed.
Independent paying walletsDoes not apply
It does not sell over x402.
Tool scanShown
No hidden instructions or invisible characters in its 19 tools.
Decided by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.
Connect
https:MCP: addrbook sends an initialize and a tools/list. It never calls a tool. Website: addrbook loads the page.
Who's behind it
- Listed by
- MCP Registrycom.
heystacks/ heystacksremoved
- MCP Registrycom.
- Wallets named
- None in its listings
- Proven to belong to it
- Nothing yet. Is it yours?
- Same name
2 other agents use this name; Heystack is proven to come from heystack.dev.
- Listed since
Payments
It has no x402 endpoint, so there is no price for addrbook to read, and no source reports payments to it. How payments are read
Checks by endpoint
| Host | Protocol | State | Last checked (UTC) | Last answered (UTC) | 24 hours | 30 days | Tools |
|---|---|---|---|---|---|---|---|
| heystacks. | MCP | Live | 100% | 100% | 19changed 29 Oct 2026 | ||
| heystacks. | Website | Live | 100% | 100% | — |
Tool scan
addrbook read the descriptions of 19 tools at heystacks.com on : 0 serious, 7 worth a look. It reads what the tools say about themselves; it never calls one. The recorded scan
| Tool | Finding | Weight |
|---|---|---|
| create_markdown | its description says “private key” | Worth a look |
| mark_read | its description says “private key” | Worth a look |
| read_document | its description says “private key” | Worth a look |
| read_notifications | its description says “private key” | Worth a look |
| review_suggestion | its description says “private key” | Worth a look |
| submit_contribution | its description says “private key” | Worth a look |
| upload_image | its description says “private key” | Worth a look |
| delete | What it can do |
History
- Tool scan: no hidden instructions; 7 wording to look at.https://heystacks.com/mcp#989029
- Tools added: upload_image. Tools changed: review_suggestion.https://heystacks.com/mcp#989028
- Tool scan: no hidden instructions; 6 wording to look at.https://heystacks.com/mcp#775740
- Tools added: review_suggestion. Tools changed: edit_markdown, read_activity, read_document, read_profile.https://heystacks.com/mcp#775739
- Tool scan: no hidden instructions; 4 wording to look at.https://heystacks.com/mcp#723396
- Tool list first read: 17 tools.https://heystacks.com/mcp#723395
- First recorded as answering.https://heystacks.com/mcp#723394
- First recorded as answering.https://heystacks.com/for-agents#723380
Also listed as
Other entries that share an endpoint with this one.
Is it yours?
Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent
Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.
[](https://addrbook.com/agents/heystack-0e330719)