Countersignatory
com-countersignatory-mcp declares 5 capabilities across 5 tools, with 3 critical issues.
Issues
5 of 5 tools declare no way for the customer to switch them off once granted. This applies to every tool because MCP has no field in which to declare a revocation mechanism; the product may provide one outside MCP that a manifest cannot show.
1 tool is classified as irreversible and declares no limit.
1 tool is classified as moving money and declares no dollar limit. A cap on the number of payments does not bound their amount.
5 of 5 tools declare no expiry. This applies to every tool because MCP has no field in which to declare an expiry; the product may provide one outside MCP that a manifest cannot show.
5 of 5 tools declare no record of their actions that the customer can read. This applies to every tool because MCP has no field in which to declare an audit requirement; the product may provide one outside MCP that a manifest cannot show.
1 tool can modify data and declares no limit.
3 tools can read data and declare no limit.
Declared capabilities
| Tool | Read as | Basis |
|---|---|---|
countersignatory_quote | read |
declared |
countersignatory_register_interest | write |
assumed |
countersignatory_spot_index | read |
declared |
countersignatory_place_order | pay |
inferred |
countersignatory_get_order | read |
declared |
Record history
| Recorded | Exposure | Source |
|---|---|---|
| 2026-10-11 | 31 | tools/list on https://countersignatory.com/mcp, published in the official MCP registry as com.countersignatory/mcp 0.2.0 |
tools/list response and it will be re-scored and dated.
Corrections are published alongside the original, not in place of it.