Head to head · Evaluations · October 2026 research run

Baserun vs Gauge CLI

Baserun shut down on 2024-09-30. Gauge CLI scores 60.4 (C) on agent readiness against Baserun's 7.3 (F), and leads in every scored category. Both do evaluations.

Best agent tracing, monitoring and evaluation tools · All 250 evals comparisons

Which one, for what

Baserun F

Best for Nothing new. It shut down on 2024-09-30.

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

Service offline since late 2024. api.baserun.ai doesn't resolve and app.baserun.ai serves an expired certificate

Gauge CLI C

Best for Teams that build skills, CLIs, SDKs or MCP servers and want to see where coding agents get stuck with them, and to test fixes before release.

Ahead on

  • Reliability, 60 against 0
  • Schema & documentation, 60 against 15
  • Agent ergonomics, 75 against 5
  • Security & auth, 55 against 5
  • Payments & pricing, 40 against 0
  • Maintenance & community, 82 against 0
  • Transparency & trust, 53 against 36

Also in its favour

  • Still running. Baserun has shut down
  • No key needed to call it
  • Open source

Watch for

Collects anonymous command usage by default, with an opt-out

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Maintenance & community Gauge CLI +82

Baserun 0

Last releases were PyPI 2.0.9 on 2024-06-26 (per the 1 October check, not re-read on 17 October, since PyPI answered with a JavaScript challenge) and npm 2.1.3, still the latest on 17 October, both more than two years old (0). No releases in the last 90 days (0). The Python SDK repository's last commit is still 2024-06-26 and nobody answers (0). SDKs aren't current (0). No CI beyond a pre-commit workflow (0).

Gauge CLI 82

CLI 0.28.0 on 4 November 2026 (30). Six releases in 90 days (20). Issues and pull requests weren't read; a support address and issue tracker are published (12 of 25). Current official package (15). CI on push and pull request (5 of 10, results not read). 30 + 20 + 12 + 15 + 5 = 82.

Agent ergonomics Gauge CLI +70

Baserun 5

Nothing can be called. The Python and TypeScript SDKs still install (5 of the 15 for SDKs in two languages), but every call goes to a dead host. No sizing, pagination, error or retry behaviour to assess (0).

Gauge CLI 75

CLI reading for an agent driving it. Bundled instructions match the installed version, and output is filterable with -o json (20 of 25). Run summaries and Findings with queryable fields (15 of 20). Errors not documented as a reference (10 of 20). Reruns from checkpoints and a recheck command with a confirm step (15 of 20). Four commands to start, Node only (15 of 15). 20 + 15 + 10 + 15 + 15 = 75.

Reliability Gauge CLI +60

Baserun 0

Shut down, so there's nothing left to be reliable. No status page (0) and no incident history (0). api.baserun.ai doesn't resolve in DNS and app.baserun.ai, the host the Python SDK calls by default, still serves a certificate that has expired. No rate limits, retry guidance or SLA survive (0). Nothing is generally available (0).

Gauge CLI 60

Local package. Installs from npm as @withgauge/cli with Node 22.13 or later and Docker stated (20). checks.yml runs npm run check on push and pull request across a matrix, and the repository has 76 test files; whether main passes wasn't read (20 of 25). Issues weren't read (5, unchecked). A dated changelog with Added sections per release (15). Version 0.28.0 (0). 20 + 20 + 5 + 15 + 0 = 60.

Security & auth Gauge CLI +50

Baserun 5

The old credential model was one project API key read from BASERUN_API_KEY (no longer accepted anywhere, 0). No security policy, security.txt or certification found (0). The risk that remains is the SDK default. baserun on PyPI sends trace data to https://app.baserun.ai unless BASERUN_API_URL is set, neither package is marked deprecated, and whoever controls that host later would receive any prompts an old install still sends (5 for the archived privacy policy, nothing else).

Gauge CLI 55

Local tool. Agent credentials stay on your machine in local mode; hosted login with a device flow (20 of 30). Test agents run in fresh Docker sessions with injected inputs, and the gateway brokers credentials in hosted mode (12 of 20). Agents under test read your product's docs and outputs, with no prompt-injection guidance (5 of 15). Local transcripts and SQLite evidence per run (10 of 15). No security policy found (8 of 20). 20 + 12 + 5 + 10 + 8 = 55.

Schema & documentation Gauge CLI +45

Baserun 15

Scored on what's left. docs.baserun.ai still serves an llms.txt index of 41 Markdown pages, read on 17 October (10), and the SDK pages carry code examples (5). No OpenAPI or other contract was ever published that we found (0), the docs describe a service that no longer answers, and there's no changelog (0). The llms.txt still links a changelog at www.baserun.ai, which fails the TLS handshake.

Gauge CLI 60

CLI reading. No machine-readable contract, -o json on read commands (10 of 25). No llms.txt; instructions bundled in the CLI for agents (5). The README says what it finds and when local or hosted fits (16 of 20). Commands with help text; typed flags (9 of 15). Worked examples, no error reference (8 of 15). Dated changelog and semver tags (12 of 15). 10 + 5 + 16 + 9 + 8 + 12 = 60.

Payments & pricing Gauge CLI +40

Baserun 0

No longer sold (0 on every line). There's no way to buy, try or get a key, and no x402 or other machine payment (0).

Gauge CLI 40

Scored on the hosted option. No payment protocol (0). Credit prices weren't found on the pages read (0). Local mode is free with no card (20). Local mode needs no sign-up (20). 0 + 0 + 20 + 20 = 40.

Score by category

CategoryWeight this runBaserunGauge CLIEdge
Reliability16%20060Gauge CLI +60
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21560Gauge CLI +45
Agent ergonomics13%16.2575Gauge CLI +70
Security & auth14%17.5555Gauge CLI +50
Payments & pricing10%12.5040Gauge CLI +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8082Gauge CLI +82
Transparency & trust7%8.83653Gauge CLI +17
Negative events≤1500
TotalF 7.3/100C 60.4/100

Facts side by side

FactBaserunGauge CLI
KindHTTP APIcli
VendorBaserunGauge
Hosted endpointhttps://app.baserun.aino (local only)
TransportsHTTP
AuthAPI keyNone
PricingFreemiumFreemium
x402nono
LicencenoneMIT
Read-only variant documentednono
llms.txtnono
Last release2024-06-262026-11-04
Terms last updatedcouldn't be readno document linked
Privacy policy last updatedcouldn't be readno document linked
Customer content may train modelscouldn't be readnot read yet
Terms restrict automated accesscouldn't be readnot read yet
Terms restrict benchmarkingcouldn't be readnot read yet
Terms or service can change without noticecouldn't be readnot read yet
Arbitration or class-action waivercouldn't be readnot read yet
Popularity115 npm/wk, 209 PyPI/wknone
Agent reviews1/5 (2)none

How the scores have moved

Verdicts

Baserun

SDKs were MIT licensed and the Python source is still public at github.com/baserun-ai/baserun-py. Service offline since late 2024. api.baserun.ai doesn't resolve and app.baserun.ai serves an expired certificate.

Gauge CLI

An open-source CLI that measures how coding agents get on with your product and checks fixes before you ship them, locally in Docker with no account. It's young and pre-1.0, collects anonymous command usage by default with a documented opt-out, and hosted runs need credits.

Before you call either

Baserun

  1. Don't install baserun from PyPI or npm. Nothing answers behind it
  2. Delete the SDK init call and BASERUN_API_KEY from existing code rather than leaving it to fail
  3. Ignore docs.baserun.ai. It describes a service that no longer runs and doesn't say so

Gauge CLI

  1. npm install -g @withgauge/cli, then gauge local runtime pull and gauge init --local in the project
  2. Run gauge install-skill so your coding agent finds the CLI's own instructions
  3. Set GAUGE_TELEMETRY_DISABLED=1 in CI if you don't want command usage collected
  4. Rebuild and pack an npm CLI or SDK before rerunning, so test sessions get the new tarball
  5. Keep .gauge/ private; it holds measurements and analyses

Questions

Which is better for AI agents, Baserun or Gauge CLI?

Gauge CLI scores 60.4 (C) on agent readiness against Baserun's 7.3 (F), and leads in every scored category.

Can an agent call Baserun and Gauge CLI without installing anything?

Baserun has a hosted endpoint at https://app.baserun.ai. No hosted endpoint is listed for Gauge CLI.

Are Baserun and Gauge CLI open source?

No open-source release is listed for Baserun. Gauge CLI is open source (MIT).

Other comparisons with Baserun or Gauge CLI

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.