中文
~/home / Show HN
Show HN

Callwitness – record what your AI agent's tools return

Callwitness – record what your AI agent's tools return is a skill AI agent for Record the actual responses from external tools called by an AI agent to debug and verify its decision-making process. Pricing: not stated on the product page. As of 2026-10-27, KanonAgent records 1 upvotes. First indexed by KanonAgent on 2026-09-21.
Callwitness captures the raw outputs from tools used by AI agents, giving developers a clear audit trail for debugging and validating AI behavior.
1 upvotes
Tracked by Kanon since Sep 21, 2026
no signal yet
status
25/100
momentum · conf 0.91
36d
tracked since 2026-09-21
3
evidence records

No signal event on file yet — status is unknown, not "quiet".

📈 Timelinewhat changed, and when
🔎 Known / Unknown 13 of 23 fields unknown
Machine-callable— unknown —
Open source1 inferred 1 quote(s)
Self-hostable1 inferred 1 quote(s)
Bring your own key— unknown —
Autonomy level2 inferred 1 quote(s)
Pricing model— unknown —
Integrations— unknown —

“Unknown” means we have not verified it — it is not a “no”. Hard filters never treat unknown as false.

🤖 Agent teardown · skill
Job to be doneRecord the actual responses from external tools called by an AI agent to debug and verify its decision-making process.
AutonomyL2 · tool-calling(evidence: "It sits between an agent and its tools, forwards every byte …")
Who it is forAI developers and agent builders
Prerequisitesopen source · self-hostable
Traction · why it is risingEarned 1 vote on Hacker News, with no public usage data yet, but fills a critical need in agent observability.
Why it matters

It provides essential observability infrastructure for AI agents, enabling transparency and reliability in complex workflows.

Evidence quotesverbatim, from the product’s own materials

“public GitHub repository (README fetched)”— structural
“pip install callwitness”— readme
“It sits between an agent and its tools, forwards every byte unchanged, blocks nothing”— readme
Signal source: Show HN
Visit official site →
📛 Official badgefor your site / README
Callwitness – record what your AI agent's tools return badge
Building Callwitness? Pick a style above — the embed code updates live. Deep color control via URL params: bg= / fg= / accent= (hex). It links back to this page.
Share on X
On mobile tap Share for WeChat / RED (Xiaohongshu) / X; on desktop use Copy text and paste into the app.

FAQ

What is Callwitness?

Callwitness captures the raw outputs from tools used by AI agents, giving developers a clear audit trail for debugging and validating AI behavior.

What does Callwitness do?

Record the actual responses from external tools called by an AI agent to debug and verify its decision-making process.

Why does Callwitness matter?

It provides essential observability infrastructure for AI agents, enabling transparency and reliability in complex workflows.

Is Callwitness open source?

Yes — Callwitness is open source.

Can I self-host Callwitness?

Yes — Callwitness can be self-hosted.

How popular is Callwitness?

As tracked by KanonAgent: 1 upvotes (first indexed 2026-09-21).

What are the best Callwitness alternatives?

Similar AI agents tracked by KanonAgent: Stealth Venture, ECC, orca, Agent-Reach, taste-skill, archify.

Callwitness – record what your AI agent's tools return alternatives — similar AI agents

Stealth VentureECCorcaAgent-Reachtaste-skillarchify

Where this fits — browse the same shelf

AI Agent Skills & PluginsAI agents for Code development and debuggingAre there open-source AI agents for Code development and debugging?Can I self-host an AI agent for Code development and debugging?Self-hosted & open-source AI agents