mcp-context-cost

github-legacy — context cost

3,548 tokens across 26 tools — light (1–5K). Measured 2026-08-16 under methodology v1.0.

   
server (self-reported) github-mcp-server v0.6.2
status measured
tokenizer tiktoken / o200k_base
launch command npx -y @modelcontextprotocol/server-github
isolation docker · public.ecr.aws/docker/library/node:22-slim · network bridge · network enabled for package fetch; clean FS, no host credentials
env vars supplied GITHUB_PERSONAL_ACCESS_TOKEN
canonical SHA-256 e0194003d2ddaf668a23e0570cdbcf8c142c3314d3dd811a50ae99e5afd79ae3
category official-reference
source https://github.com/modelcontextprotocol/servers-archived

Where the tokens are

tool tokens share description schema
create_pull_request_review 360 10.1% 7 340
list_pull_requests 226 6.4% 6 208
create_pull_request 200 5.6% 10 178
create_or_update_file 178 5.0% 11 154
push_files 178 5.0% 12 155
merge_pull_request 159 4.5% 4 143
search_issues 151 4.3% 10 129
list_issues 149 4.2% 10 127
update_issue 143 4.0% 9 123
update_pull_request_branch 128 3.6% 13 102
create_branch 127 3.6% 9 107
get_file_contents 121 3.4% 13 96
create_issue 120 3.4% 9 100
search_repositories 115 3.2% 5 98
search_users 110 3.1% 6 93
fork_repository 108 3.0% 11 86
create_repository 107 3.0% 9 87
get_pull_request_status 105 3.0% 12 80
get_pull_request_files 103 2.9% 10 80
get_pull_request_comments 101 2.8% 8 80
get_pull_request_reviews 100 2.8% 7 80
get_pull_request 99 2.8% 7 80
search_code 96 2.7% 7 78
list_commits 94 2.6% 12 70
add_issue_comment 87 2.5% 7 68
get_issue 81 2.3% 12 59

Each tool is tokenized on its own, so the parts do not sum exactly to the whole: the array adds its own brackets and commas, and the tokenizer merges tokens across object boundaries. The badge number is always the count of the whole array, never a sum of parts.

Re-derive it

npx -y mcp-context-cost verify results/github-legacy/measurement.json

That re-tokenizes the published capture and checks the count and the hash. If it disagrees with the badge, the badge is wrong — open an issue and it gets corrected.

Badge JSON · All servers · Leaderboard · Methodology