Gap note
Model Context Protocol gaps
Model Context Protocol is a gap note assembled on 2026-10-21. It quotes primary pages for settlement asset, spend controls, revocation, protocol composition, license, governance body, and cross-company use. A line that says not documented uses the day that page was read. The note does not rank the listing.
Last verified 2026-10-21
Sources
Model Context Protocol listing · Protocol compatibility · Gaps JSON
| Dimension | Status |
|---|---|
| Settlement asset | Not documented |
| Spend controls | Omitted |
| Revocation | Omitted |
| Protocol composition | Documented |
| License | Documented |
| Governance body | Documented |
| Cross-company use | Documented |
Settlement asset
Not documented
Not documented as of 2026-10-21. The specification read on 2026-10-21 does not name a settlement asset.
Model Context Protocol specification · Read 2026-10-21
Spend controls
No checked source for this dimension in this note.
Revocation
No checked source for this dimension in this note.
Protocol composition
Documented
The A2A project site says MCP is the tool interface and A2A is the agent to agent interface.
A2A protocol site · Read 2026-10-21
The UCP specification defines an MCP transport.
Universal Commerce Protocol specification · Read 2026-10-21
The Personal Agent Protocol draft says a company publishes how an agent may act using OAuth, OpenAPI, and MCP.
Personal Agent Protocol draft specification · Read 2026-10-16
ERC-8004 names MCP and allows a registration file to list an MCP endpoint.
ERC-8004 Trustless Agents · Read 2026-10-21
The MPP documentation index describes an MCP transport for payment challenges.
MPP protocol site · Read 2026-10-21
AP2's site calls AP2 an open extension for A2A and MCP.
AP2 protocol documentation · Read 2026-10-21
License
Documented
New code and specifications are Apache-2.0. Documentation other than specifications is CC-BY-4.0. Some earlier contributions remain under MIT until the author agrees to relicense.
Model Context Protocol LICENSE · Read 2026-10-21
Governance body
Documented
GOVERNANCE.md says Model Context Protocol is a series of LF Projects, LLC.
Model Context Protocol governance · Read 2026-10-21
Cross-company use
Documented
The A2A project site says MCP is the tool interface and A2A is the agent to agent interface.
A2A protocol site · Read 2026-10-21
Questions
- What does not documented mean?
- Not documented means the cited page does not state the fact. The line names that page and the day it was read. It is not a claim that the fact is false.
- What does omitted mean?
- Omitted means this note has no checked source for that dimension. The dimension was left out rather than filled in.
- Does the index rank these products?
- No. The table can be sorted by name, by dimension status, or by checked date. Sort order is not a score.
- Where is the machine readable file?
- GET /data/gaps.json. The file includes every note, the cited sources, and the read dates.