mcp / capability
MCP stdio
Tool invocation over MCP standard input/output.
Deterministic test
mcp.stdio · v1.0.0
Measures actual invocation of a deterministic get_token MCP tool. A server-side receipt and matching output are both required. HTTP uses a loopback-only Streamable HTTP endpoint.
Recorded observations
| Agent | Version | Platform | Result | Date |
|---|---|---|---|---|
| antigravity-cli | 1.1.27 | linux x64 | pass | 2026-09-08 |
| codex | 0.153.4 | linux x64 | fail | 2026-09-08 |
| codex | 0.153.4 | linux x64 | pass | 2026-09-08 |
| codex | 0.153.4 | linux x64 | pass | 2026-09-08 |
| codex | 0.153.4 | linux x64 | fail | 2026-09-08 |
| opencode | 1.18.29 | linux x64 | pass | 2026-09-08 |
| opencode | 1.18.29 | linux x64 | pass | 2026-09-08 |
| opencode | 1.18.29 | linux x64 | pass | 2026-09-08 |