braintrust-agent-evals

braintrust-agent-evals is a skill for Claude Code, Codex from githits-com/githits-cli. It costs 31 tokens per session (2,188 once invoked), scanned A, original, Apache-2.0.

Inspect, query, compare, or explicitly export GitHits agent-eval history in Braintrust using the repository's verified workflow.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/githits-com/githits-cli/braintrust-agent-evals
Any agent
npx skills add githits-com/githits-cli --skill braintrust-agent-evals
Clone the repo
git clone --depth 1 https://github.com/githits-com/githits-cli

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for braintrust-agent-evals

README.md
[![agentmods](https://agentmods.dev/badge/skills/githits-com/githits-cli/braintrust-agent-evals.svg)](https://agentmods.dev/skills/githits-com/githits-cli/braintrust-agent-evals)
Your own site
<a href="https://agentmods.dev/skills/githits-com/githits-cli/braintrust-agent-evals"><img src="https://agentmods.dev/badge/skills/githits-com/githits-cli/braintrust-agent-evals.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,188 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00031 $0.02188
Opus 5 $0.00015 $0.01094
Sonnet 5 $0.00006 $0.00438
Haiku 4.5 $0.00003 $0.00219

Measured today against content hash b97d98754c26, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

braintrust-agent-evals scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/braintrust-agent-evals/SKILL.md · 172 lines

How it starts

The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Braintrust agent evals

Use this skill for read-only inspection of the GitHits agent-eval history in the Braintrust project githits-cli-agent-evals, or when the user explicitly asks to export a validated local suite. The normalized exporter stores one top-level eval span per scenario/workload cell plus structural tool children; see docs/implementation/agentic-eval-metrics.md for the field contract.

The persistence unit is one exporter invocation = one experiment, one scenario/workload cell = one eval row, and one normalized logical tool call = one structural tool child. Current exporter-owned experiment names are main-r<run-id>-a<attempt>, pr-<pr-number>-r<run-id>-a<attempt>, and local-<branch-slug>-<UTC-timestamp-with-milliseconds>-<short-sha>. Historical github-* experiments predate this identity contract and should be treated as historical evidence, not as current names or baseline candidates.

Safety and interpretation

  • Read-only is the default. Never delete experiments or upload raw stdout, stderr, environment/configuration, provider events, or arbitrary artifacts.
  • Never read or print BRAINTRUST_API_KEY, .bt/, Keychain contents, or any credential/environment value. CI scopes the key only to its exporter step.
  • Do not treat an agent's self-reported confidence as result quality. This phase has no scorer or quality score.
  • A failed or partial cell can be valid history when its normalized evidence is complete; distinguish that from a rejected suite or failed preflight.

Inspect experiments

Use the exercised project-option placement for list/view:

bt experiments --json --project githits-cli-agent-evals list
bt experiments --json --project githits-cli-agent-evals view <experiment-name>

Use the experiment ID returned by the view result for a bounded field query:

bt sql --json --non-interactive "SELECT input, output, metrics, metadata, tags FROM experiment('<experiment-id>') WHERE span_attributes.type = 'eval' LIMIT 23"
bt sql --json --non-interactive "SELECT name, span_attributes.type, metrics, metadata FROM experiment('<experiment-id>') WHERE span_attributes.type = 'tool' LIMIT 100"

Read the full file on GitHub · 172 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 172 lines · 31 tokens per session scan A b97d98754c26

Subscribe to this mod's changes

braintrust-agent-evals is a skill published in the GitHub repository githits-com/githits-cli (93 stars, last pushed today), licensed Apache-2.0. It adds 31 tokens to every session and 2,188 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.