# a2b_discover

Search on-chain agent and MCP tool records. Use

Agent View of the PolicyLayer registry record for `a2b_discover`. HTML page: https://policylayer.com/tools/b-open-io-bsv-mcp/a2b-discover

## Facts

- Tool: `a2b_discover`
- Server: Bitcoin SV MCP Server (`b-open-io/bsv-mcp`) — https://policylayer.com/tools/b-open-io-bsv-mcp.md
- Homepage: https://github.com/b-open-io/bsv-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "a2b_discover",
    "arguments": {}
  }
}
```

## Why a2b_discover is rated Low

This tool performs a search/query operation on blockchain records, which is a read-only operation. It retrieves information about on-chain agents and MCP tools but does not create, modify, delete, or execute any actions. The search functionality is characteristic of Read category tools that query data without side effects.

From the tool's own definition: "Tool name 'a2b_discover' with description stating 'Search on-chain agent and MCP tool records.' The verb 'search' indicates data retrieval without modification or side effects."

## Use case

AI agents call a2b_discover to retrieve information from Bitcoin SV MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Bitcoin SV MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "a2b_discover": {}
  }
}
```

## Other tools on Bitcoin SV MCP Server (89)

- `wallet_abortAction` — Destructive — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-abortaction.md
- `wallet_relinquishCertificate` — Destructive — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-relinquishcertificate.md
- `wallet_relinquishOutput` — Destructive — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-relinquishoutput.md
- `wallet_remove` — Destructive — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-remove.md
- `bap_friend` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/bap-friend.md
- `utils_installAgentMaster` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/utils-installagentmaster.md
- `wallet_createHmac` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-createhmac.md
- `wallet_createSignature` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-createsignature.md
- `wallet_decrypt` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-decrypt.md
- `wallet_encrypt` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-encrypt.md
- `wallet_proveCertificate` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-provecertificate.md
- `wallet_signAction` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-signaction.md
- `wallet_signBsm` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-signbsm.md
- `wallet_waitForAuthentication` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-waitforauthentication.md
- `x402_request` — Execute — https://policylayer.com/tools/b-open-io-bsv-mcp/x402-request.md
- `bsocial_createPost` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/bsocial-createpost.md
- `droplit_fund` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/droplit-fund.md
- `mnee_sendMnee` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/mnee-sendmnee.md
- `wallet_acquireCertificate` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-acquirecertificate.md
- `wallet_cancelListing` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-cancellisting.md
- `wallet_createAction` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-createaction.md
- `wallet_createOrdinals` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-createordinals.md
- `wallet_listOrdinal` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-listordinal.md
- `wallet_lockBsv` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-lockbsv.md
- `wallet_mintCollection` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-mintcollection.md
- `wallet_opnsDeregister` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-opnsderegister.md
- `wallet_purchaseListing` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-purchaselisting.md
- `wallet_sendAllBsv` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-sendallbsv.md
- `wallet_sendBsv` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-sendbsv.md
- `wallet_sweepBsv` — Financial — https://policylayer.com/tools/b-open-io-bsv-mcp/wallet-sweepbsv.md
- …and 59 more: https://policylayer.com/tools/b-open-io-bsv-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=b-open-io-bsv-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/b-open-io-bsv-mcp