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48,210 traces checked today · illustrative

Your AI is failing quietly.
Suture fixes it.

Every trace checked. Every failure grouped. Every fix proven before it reaches your PR queue.

Start freeWatch the loop
Traces checked
100%, not a sample
Cost to check
$0.042 per 1M input tokens
Merges without you
0
tail -f suture.loglive
  1. FAILtr_8f2 incomplete · sev 3, iss_42
  2. PASStr_8f3 support-agent · 1.9s
  3. INFOiss_42 issue grouped · 182 traces · rising
  4. PASStr_8f4 orchestrator · 2.4s
  5. FIXiss_42 fix written · prompts/orchestrator.md +3 −1
  6. PASSiss_42 verified 25/40 → 38/40 · 0 regressions
  7. PRiss_42 opened for review, PR #118

( illustrative log · hover or focus to pause )

  1. Suture
  2. The loop
01–07

Seven steps, one loop.

From a failing trace to a merged fix, without anyone reading logs. Here is one Issue going all the way round.

iss_42 / case filestep 01 / 07

( trace tr_8f2 )

source
langfuse · cloud.langfuse.com
spans
3 · orchestrator → kb.search → writer
input
"[REDACTED:email] wants a LinkedIn post…"
redacted
email ×1

( one illustrative Issue, start to finish )

  1. Suture
  2. Failure graph

See where it breaks.

Agents, prompts and models, wired to the failures they produce. Thicker lines carry more failing traces. Select a node to see the Issues behind it.

( loading graph )

( illustrative · click or tab to a node, enter to select )

  1. Suture
  2. Autonomy

Nothing merges until you approve.

Each project has an autonomy level. The default is pr: Suture does the work, you make the call. Auto-merge is off until you turn it on, and it only covers the low-risk fixes you define.

project / settings / autonomydefault: pr

Writes the fix, proves it on the failing traces and opens a PR. You review and merge.

  • Check every trace and group failures: yes
  • Write a root cause and fix plan: yes
  • Fix in a sandbox, prove it, open a PR: yes
  • Open a revert PR if the Issue comes back: yes
  • Merge low-risk fixes without review: no
  1. Suture
  2. Proof

Every PR arrives proven.

A fix is replayed against the traces that failed, three runs each, with tools mocked. The PR opens only if the pass rate goes up and nothing that passed before now fails.

your-org / content-api / pull / 118review

Suture fix: Orchestrator drops the CTA when posts exceed 1,200 chars

issue: iss_42category: incompleteseverity: 3.1 / 4
( illustrative · Replay used recorded tool outputs. 2 cases partially verified (unknown tool stubbed). )
VerificationBeforeAfter
Failing cases replayed (n=40, 3 runs each)25/40 pass38/40 pass
Existing eval suite[0 new failures]112/118113/118
Avg cost per trace$0.0129$0.0131

Opened by Suture · autonomy: pr · revert watch: on (7 days)

  1. Suture
  2. Integrations

Works with what you have.

Suture sits on top of your tracer. Nothing to migrate, no new SDK.

  • Langfuse

    live

    Pull with project keys. Backfills 7 days, then polls every minute.

  • OpenTelemetry

    live

    Push OTLP/HTTP from any language. GenAI and OpenInference attributes.

  • GitHub

    live

    A GitHub App opens one small PR per Issue. No personal tokens.

  • Claude Code · Cursor

    live

    MCP server: list Issues, read fix plans, pull failing cases into your editor.

  • LangSmith

    soon

    Pull connector, same as Langfuse.

  • Helicone

    soon

    Pull connector, same as Langfuse.

  1. Suture
  2. Pricing

Free during beta.

Free: 1 project, 10k traces and 3 fix runs a month. For Pro, Agency or Enterprise, talk to us.

  • plan / betaFree during beta

    Free beta

    $0during beta

    Everything Suture does, with monthly quotas.

    • 1 project
    • 10k traces / month
    • 3 fix runs / month
    • Every trace checked
    • Verified fix PRs
    • Chat and MCP
    Start free
  • plan / protalk to us

    Pro

    $79/ month

    More projects, traces and fix runs.

    • 3 projects
    • 250k traces / month
    • 30 fix runs / month
    • Alerts and MCP
    Talk to us
    talk to us / pro

    Talk to us about Pro.

    Tell us what you need. A person reads it and writes back.

  • plan / agencytalk to us

    Agency

    $299/ month

    Every client, one console.

    • Unlimited client workspaces
    • 1M traces / month
    • 150 fix runs / month
    • White-label reports
    Talk to us
    talk to us / agency

    Talk to us about Agency.

    Tell us what you need. A person reads it and writes back.

Enterprise

Self-host, SSO / SAML, data residency and an SLA. Tell us what you need.

custom termsTalk to us
talk to us / enterprise

Talk to us about Enterprise.

Tell us what you need. A person reads it and writes back.

  • ( Every account is on the free beta. No card, no checkout. )
  • ( Quotas reset on the 1st of each month (UTC). Run out, and you can ask for more from the app. )
  • ( Paid plans: $8 per extra 100k traces, and 20% off with opt-in pattern sharing. Talk to us to set one up. )
  1. Suture
  2. FAQ

Straight answers.

What we store, what we never do, what happens when a fix is wrong, and what it costs.

07 entries / open any

  1. Suture
  2. Get started

Your next failure gets a PR.

Free during beta: 1 project, 10k traces and 3 fix runs a month. No card.

suture / get startedfree beta · no card
  1. 01Sign up and create a project
  2. 02Connect Langfuse or send OpenTelemetry
  3. 03Install the GitHub App, pick an autonomy level
Start freeSee pricing

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