# CompletionKit MCP server

Prompt evals over MCP: run a prompt on your dataset, score each output 1-5 with an LLM judge.

## Links
- Registry page: https://www.getdrio.com/mcp/com-completionkit-evals
- Repository: https://github.com/homemade-software-inc/completion-kit
- Website: https://completionkit.com

## Install
- Endpoint: https://completionkit.com/mcp
- Auth: Auth required by registry metadata

## Setup notes
- Remote header: Authorization (required; secret)
- The upstream registry signals required auth or secrets.
- Remote endpoint: https://completionkit.com/mcp
- Header: Authorization

## Tools
- prompts_list - List all prompts Endpoint: https://completionkit.com/mcp
- prompts_get - Get a prompt by ID Endpoint: https://completionkit.com/mcp
- prompts_create - Create a prompt Endpoint: https://completionkit.com/mcp
- prompts_update - Update a prompt. If the prompt already has runs, this creates a new DRAFT version (current=false) rather than editing in place or publishing — promote it with prompts_publish — so an agent's edits don't go live without a gate. If it has no runs, it is updated in place. Endpoint: https://completionkit.com/mcp
- prompts_delete - Delete a prompt Endpoint: https://completionkit.com/mcp
- prompts_publish - Publish a prompt version, making it the current version Endpoint: https://completionkit.com/mcp
- prompts_suggest_improvement - Suggest an improved version of a prompt, grounded in a run's test results and judge feedback. Analyzes the run's responses, scores, and reviews, then returns reasoning plus a rewritten template (preserving {{variables}}) and persists it as a Suggestion. Requires a run that has a prompt (not a scoring-only run). Endpoint: https://completionkit.com/mcp
- runs_list - List all runs Endpoint: https://completionkit.com/mcp
- runs_get - Get a run by ID, including "metric_averages": a per-metric breakdown with each metric's average score (or pass rate for checks), how many rows it graded, and how many scored low. Use this to find the metric dragging a prompt down without listing responses. Endpoint: https://completionkit.com/mcp
- runs_create - Create a run. Omit prompt_id and provide output_column to score existing outputs by grading a pre-existing dataset column instead of generating new ones. Endpoint: https://completionkit.com/mcp
- runs_update - Update a run Endpoint: https://completionkit.com/mcp
- runs_delete - Delete a run Endpoint: https://completionkit.com/mcp
- runs_generate - Start a run. Required for every run, including score-only runs (no prompt): generates responses with the prompt when there is one, otherwise copies the graded dataset column and grades it. Endpoint: https://completionkit.com/mcp
- runs_regrade - Re-grade a run's existing responses with its currently attached metrics, without regenerating. Use after attaching or editing metrics on an already-generated run. Endpoint: https://completionkit.com/mcp
- runs_rerun - Create and start a fresh copy of a run with the same prompt, dataset, metrics, and settings. Use when the judge changed and you want a clean run instead of mixing versions. Endpoint: https://completionkit.com/mcp
- runs_retry_failures - Re-run only the failed responses of a run, optionally limited to specific response ids via "only". Endpoint: https://completionkit.com/mcp
- responses_list - List responses for a run, in row order. Returns {total, limit, offset, returned, responses}. Defaults to 50 rows because full payloads are large: use "fields" to drop the bodies, "min_score"/"max_score" to isolate low scorers, and sort "score_asc" to read the worst rows first. For per-metric averages of the whole run use runs_get instead of aggregating here. Endpoint: https://completionkit.com/mcp
- responses_get - Get a specific response Endpoint: https://completionkit.com/mcp
- datasets_list - List all datasets Endpoint: https://completionkit.com/mcp
- datasets_get - Get a dataset by ID Endpoint: https://completionkit.com/mcp
- datasets_create - Create a dataset with CSV data. First row is the header. Two column names are recognized specially: "expected_output" is each row's answer key (ground truth) given to the judge and to checks that compare against the row's expected value, and "actual_output" is a pre-made output to score in a prompt-less run. Both are overridable per run (expected_column / output_column). Every column is also available to the prompt as a variable. Endpoint: https://completionkit.com/mcp
- datasets_update - Update a dataset Endpoint: https://completionkit.com/mcp
- datasets_delete - Delete a dataset Endpoint: https://completionkit.com/mcp
- datasets_create_from_url - Create a dataset by downloading CSV from a URL instead of inlining it. Use this for large datasets: pass a public http(s) URL and the server fetches the CSV directly, so the data never has to pass through the tool-call arguments. The URL is SSRF-checked and the download is capped at 10MB. First row is the header; the "expected_output" (answer key) and "actual_output" (pre-made output) columns are recognized specially, overridable per run. Endpoint: https://completionkit.com/mcp
- metrics_list - List all metrics Endpoint: https://completionkit.com/mcp
- metrics_get - Get a metric by ID Endpoint: https://completionkit.com/mcp
- metrics_create - Create a metric with evaluation criteria. For a deterministic check set metric_type:"check" and check_config. Per-kind required keys: value (contains/not_contains/equals), pattern (regex), json_path+expected (json_path_equals), min and/or max (length_bounds); valid_json takes no extra keys. target_path is required when target is json_path. For contains, not_contains, and equals, set compare_to:"expected" to grade against each row's own expected_output (ground truth) instead of a constant value (drop value); add expected_path to dig into the expected value when it is JSON. Endpoint: https://completionkit.com/mcp
- metrics_update - Update a metric. For a deterministic check set metric_type:"check" and check_config. Per-kind required keys: value (contains/not_contains/equals), pattern (regex), json_path+expected (json_path_equals), min and/or max (length_bounds); valid_json takes no extra keys. target_path is required when target is json_path. For contains, not_contains, and equals, set compare_to:"expected" to grade against each row's own expected_output (ground truth) instead of a constant value (drop value); add expected_path to dig into the expected value when it is JSON. Endpoint: https://completionkit.com/mcp
- metrics_delete - Delete a metric Endpoint: https://completionkit.com/mcp
- metrics_suggest_variants - Ask the model to rewrite the metric's judge instruction in N variants targeted at the recent disagreements. Each variant is saved as a draft MetricVersion with source="suggestion". Returns the persisted drafts. Stripe-metering hooks fire via ActiveSupport::Notifications under completion_kit.judge_suggestion.generated. Endpoint: https://completionkit.com/mcp
- metric_groups_list - List all metric groups Endpoint: https://completionkit.com/mcp
- metric_groups_get - Get a metric group by ID Endpoint: https://completionkit.com/mcp
- metric_groups_create - Create a metric group Endpoint: https://completionkit.com/mcp
- metric_groups_update - Update a metric group Endpoint: https://completionkit.com/mcp
- metric_groups_delete - Delete a metric group Endpoint: https://completionkit.com/mcp
- metric_versions_list - List every MetricVersion (drafts + published) for a metric, newest first. Each row carries version_number, state, source, current flag, and timestamps. Endpoint: https://completionkit.com/mcp
- metric_versions_publish - Publish a MetricVersion as the live version of its metric. Works for both 'draft → published' and 'revert to an older published version → current'. Transactionally flips current, demotes peers, and writes the version's instruction + rubric_bands back onto the metric so the judge grades against it. Endpoint: https://completionkit.com/mcp
- metric_versions_dismiss - Destroy a draft MetricVersion (use for either source: 'edit' or source: 'suggestion'). Published versions are refused — to demote a published version, publish a different one as current instead. Endpoint: https://completionkit.com/mcp
- provider_credentials_list - List all provider credentials (API keys are not exposed) Endpoint: https://completionkit.com/mcp
- provider_credentials_get - Get a provider credential by ID (API key is not exposed) Endpoint: https://completionkit.com/mcp
- provider_credentials_create - Create a provider credential Endpoint: https://completionkit.com/mcp
- provider_credentials_update - Update a provider credential Endpoint: https://completionkit.com/mcp
- provider_credentials_delete - Delete a provider credential Endpoint: https://completionkit.com/mcp
- tags_list - List all tags Endpoint: https://completionkit.com/mcp
- tags_get - Get a tag by ID Endpoint: https://completionkit.com/mcp
- tags_create - Create a tag. Color is auto-assigned. Endpoint: https://completionkit.com/mcp
- tags_update - Rename a tag. Endpoint: https://completionkit.com/mcp
- tags_delete - Delete a tag. Removes the tag from every linked metric, prompt, run, and dataset. Endpoint: https://completionkit.com/mcp
- agreements_list - List agreements. Filter by run_id, response_id, metric_id, or created_by. Endpoint: https://completionkit.com/mcp
- agreements_create - Upsert an agreement for (run, response, metric, created_by). Verdict is one of agree, disagree, borderline. corrected_score (1..5) is required when verdict is 'disagree'. Endpoint: https://completionkit.com/mcp
- judges_replay - Create a scoring run for the current judge over a dataset's existing outputs (wraps runs_create with prompt_id omitted and output_column supplied). This only sets up the run; call runs_generate to actually re-judge the outputs so you can compare against human verdicts. Endpoint: https://completionkit.com/mcp
- judges_compare - Compare two versions of one metric's agreement stats side by side. Requires metric_id, metric_version_a_id, and metric_version_b_id (both versions must belong to that metric). Unavailable for check metrics. Endpoint: https://completionkit.com/mcp
- promptfoo_import - Import a promptfooconfig.yaml. Creates a prompt, a dataset from the test vars, and metrics from the assert blocks (llm-rubric/g-eval become judge metrics; contains/equals/regex/is-json become deterministic check metrics). Returns a summary of what mapped and what was skipped and why; nothing is dropped silently. Endpoint: https://completionkit.com/mcp
- usage_get - Get this organization's plan usage and limits for the current billing period: runs and prompt fetches used, their limits, how many remain, and when the period resets. Call this to pre-check quota before starting runs. Runs are hard-blocked once the run limit is reached (with a small grace band), so a run over the limit will fail with run_limit_reached. Endpoint: https://completionkit.com/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: com.completionkit
- Version: 1.0.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jul 18, 2026
- Source: https://registry.modelcontextprotocol.io