mcpbench GitHub

Heatmap

Model:effort × scenario mean score (0–100). A trial scores 0 if any MUST checkpoint fails (task success is a MUST), otherwise the fraction of SHOULD checkpoints passed; MAY checkpoints never affect the score. Defaults to the headline none (no-docs) condition — priors only; select full to see the docs-assisted scores. With a single version + docs selected, cells show the mean over repeat trials and link to trial detail.

Model client/bad-version-response client/composite client/discover-instructions client/drop-stream-mid-call client/elicit-form client/elicit-url client/ema-id-jag-flow client/get-stream client/header-mirroring client/initialize-handshake client/mrtr-basic client/mrtr-elicit-url client/mrtr-multi-round client/mrtr-no-state client/no-batching client/oauth-cimd client/oauth-cimd-over-dcr client/oauth-dcr-application-type client/oauth-iss-mismatch client/oauth-pkce client/oauth-refresh-token client/param-headers client/pkce-unsupported-as client/prompts-get client/protocol-version-header client/resources-read client/session-echo client/session-recovery client/sse-response client/stalled-tool client/stateless-composite client/stateless-prompts client/stateless-resources client/stateless-sse-response client/stateless-tool-call client/task-cancel client/task-polling client/tool-call-basic
anthropic/claude-opus-4-8:medium 0 100 50 100 0 0 25 100 50 100 50 50 0 50 100 0 0 0 100 50 100 50 25 100 100 50 50 100 100 0 50 50 50 50 50 50 50 100
moonshotai/kimi-k2.7-code 0 50 50 50 0 0 50 100 50 100 50 0 50 0 100 0 0 50 0 50 50 50 0 0 0 50 50 100 100 0 50 0 0 50 50 25 50 50
openai/gpt-5.6-luna:medium 0 100 25 100 0 0 50 100 50 100 50 25 50 50 100 0 0 50 50 63 50 50 0 100 100 50 0 100 100 0 50 25 50 50 50 50 50 100
openai/gpt-5.6-sol:medium 50 100 50 50 100 0 50 100 50 100 50 50 50 100 100 75 0 50 100 75 50 50 25 100 100 100 0 100 100 50 50 50 50 50 50 50 50 100
openai/gpt-5.6-terra:medium 0 100 50 50 50 0 50 100 50 100 50 50 50 50 100 0 0 50 100 50 0 50 0 100 50 50 0 100 100 50 50 50 50 50 50 50 50 100