mcp-context-cost

pinecone — context cost

5,903 tokens across 9 tools — moderate (5–15K). Measured 2026-08-16 under methodology v1.0.

   
server (self-reported) pinecone-mcp v0.3.0
status measured
tokenizer tiktoken / o200k_base
launch command npx -y @pinecone-database/mcp
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 PINECONE_API_KEY
canonical SHA-256 cc8ffaadb37615f11747b0a1eafd8541cfb2f31064adcd4973860f8f03bab377
category vendor-official
source https://github.com/pinecone-io/pinecone-mcp

Where the tokens are

tool tokens share description schema
search-records 1,179 20.0% 111 1,031
cascading-search 1,154 19.5% 55 1,063
create-index-for-model 856 14.5% 80 728
rerank-documents 793 13.4% 69 687
upsert-records 593 10.0% 84 457
describe-index-stats 424 7.2% 64 325
describe-index 423 7.2% 67 325
list-indexes 371 6.3% 32 306
search-docs 108 1.8% 31 43

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.

What this costs on Claude

Measured 2026-08-16 against claude-opus-5 via Anthropic’s count_tokens (method tools-delta/v1).

  tokens  
o200k, full capture 5,903 the badge number — every byte tools/list returned
o200k, Anthropic fields only 5,679 3.8% of the capture is MCP-only metadata
Claude, same fields 9,184 1.56× the badge number

An Anthropic tool definition carries name, description, and input_schema and nothing else, so title, annotations, outputSchema, execution, and icons are dropped before the request — that is the second row. The third row is the same tools counted by Anthropic, which is larger than the second because Anthropic’s tokenizer is denser on this content than o200k_base and the API adds its own framing (at most 328 tokens of it fixed, measured against a single minimal tool). The two effects run in opposite directions, which is why the Claude number is not a fixed multiple of the badge.

Re-derive it

npx -y mcp-context-cost verify results/pinecone/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