ComputeFirst
Free deterministic tools for math, data transforms, dates, text, statistics, finance, and units.
Connect it
Settings → Connectors → Add custom connector
URL: https://computefirst.net/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://computefirst.net/mcp{
"mcpServers": {
"computefirst": {
"url": "https://computefirst.net/mcp"
}
}
}claude mcp add --transport http computefirst https://computefirst.net/mcp{
"servers": {
"computefirst": {
"type": "http",
"url": "https://computefirst.net/mcp"
}
}
}15 tools, verified live
searchread-onlySearch the ComputeFirst catalog (computefirst.net/tools) with an English task. Returns up to 5 tools (3 by default) with id, version and a 0–1 score; a confident first match includes its input contract. No match: request_tool can ask for one.
describeread-onlyInput schema, limits and examples of one ComputeFirst catalog tool, by id and version.
executeread-onlyRun one ComputeFirst catalog tool by id and version with its JSON input. Returns the deterministic result and an unmeasured savings receipt. Limits: computefirst.net/docs#limits.
execute_batchread-onlyRun 1–20 ComputeFirst catalog tools in one request. Optional bindings fill an input key from an earlier result (JSON Pointer); include_result:false omits an intermediate. Steps after a failed dependency are skipped; nothing is retried automatically. Each success is one execution. Inputs, results and response: 256 KiB each. A factory work budget can skip an item with batch_work_limit; finance and e
savingsread-onlySavings totals, optionally for one model: with a key, the account's measured and estimated totals; otherwise community verified totals. Unmeasured is not zero.
feedbackTell ComputeFirst what helped or went wrong (a missing tool fits request_tool). A stable request_id makes retries safe. Leave out secrets and raw data.
request_toolAsk for a tool that does not exist yet: the task, optionally example input and output. Optional contact_email (with email_consent:true), only if the person wants one email when it ships. Leave out secrets.
subscribeSubscribe an email to new-tool announcements, only when the person asks for them (consent:true). Every email has an unsubscribe link.
sign_inOnly when the person explicitly asks for a free account (consent:true): creates one for their email (unverified) and returns an agent key once, for saved tools, history, personal savings and a higher limit. The person stores the key in their client settings; do not repeat it in the conversation. newsletter:true only if they ask.
profileread-onlyThe signed-in account: keys, privileges and tool-request status. Without a key: signed_in:false and the optional extras.
activityread-onlyThe account's recent calls and outcomes; pass next as before for older ones. Without a key: signed_in:false.
list_saved_toolsread-onlyTools saved in the account's library (id, version, note). Without a key: signed_in:false and no tools.
save_toolSave a tool id and version to the account's library, with an optional note (saving again replaces the note). Without a key nothing is saved.
remove_saved_toolcan modifyRemove a tool id and version from the account's library. Without a key nothing changes.
report_savingsOptional, for the person: your model id and, if known, your own estimate of the tokens a call saved (estimated_tokens_saved). Returns its dollar value at public list prices; unknown stays null. A measured comparison adds task_id, baseline_id, baseline, actual, whole_task:true, execution_ref.
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