mcpbench GitHub

client/oauth-refresh-token

openai/gpt-5.6-sol:medium 2026-07-28 docs: none score 100% musts 5/5 · shoulds 1/1 · mays 0/0 works yes · conformant yes

Checkpoints

MUST (any failure zeroes the score — 5/5 passed)

Checkpoint Description
refresh-token-confidential Refresh token values only ever appeared in POST bodies to the token endpoint
bearer-token All post-grant accepted MCP requests carried Authorization: Bearer; no token in any URL
recovered-after-expiry A tool call succeeded with a token issued after the first grant
finish-job-success Successfully called finish_job while authorized
begin-job-success Successfully called begin_job while authorized

SHOULD (the score fraction — 1/1 passed)

Checkpoint Description
grant-types-refresh Registration grant_types included refresh_token

Usage & cost

Nominal cost
$0.402
Input tokens
33,746
Output tokens
5,898
Cache read
113,152
Duration
306s
Timestamp
2026-07-18 11:56:23Z
Bench version
0.3.0

Cost is nominal (public API pricing): token usage × published rates; actual marginal cost is subscription-covered.