6 ms·

Show HN: Quibbler – A critic for your coding agent that learns what you want

114 points by etherio 11mo ago

cjonas 11mo ago
Vibeception
mouse_ 11mo ago
There's so many agents to handle my agents, I'm gonna need agents for my agent agents soon.
- vismit2000 11mo ago
  Reminds of factory factory factory! https://factoryfactoryfactory.net/ https://factoryfactoryfactory.net/
deleted 11mo ago
[deleted]
gexla 11mo ago
More explanation here that I found by Googling around. Though not sure it has more info than the Github page. https://fulcrumresearch.ai/2025/10/22/introducing-orchestra-quibbler.html https://fulcrumresearch.ai/2025/10/22/introducing-orchestra-...
etherio 11mo ago
hey HN! happy to answer any questions this kind of tool is especially useful in longer running tasks to enforce your intent without having to check in on your agent all the time
- anonymous908213 11mo ago
  Can users stack Quibblers, so Quibbler 2 corrects Quibbler 1 if, say, it fabricates an issue in the code it's reviewing? If so, have you found an optimum number of Quibblers for the Quibbler stack? Also, might users form a Quibbler council such that multiple Quibblers review the same thing and form a consensus before proceeding?
  - Balinares 11mo ago
    I love the pixel-perfect precision with which this comment is straddling the Poe's Law line. That aside I also love the concept of Quibbler Council and I'd get a kick out of seeing it in action.
    - sheepscreek 11mo ago
      MoQs - Mixture of Quibblers? Would be convenient to have them run on dedicated FGPAs. Then they can facilitate near real-time quibbing at the network level across all packets.
qq66 11mo ago
> We’ve found Quibbler useful in preventing agents from: 1) fabricating results without running commands What a world we've created for ourselves
- N_Lens 11mo ago
  Next step is critics for the critics.
  - CoastalCoder 11mo ago
    Until they reach critical mass.
anonymous908213 11mo ago
But who polices the vibe police?
- Brajeshwar 11mo ago
  “Well, who’s gonna monitor the monitors of the monitors?” — Enemy of the State (Movie)
p0w3n3d 11mo ago
In other words, the Quibbler siphons wrackspurts away from your code.
selfawareMammal 11mo ago
An agent's agent?
- hikarudo 11mo ago
  A gentleman's gentleman!
- oneandonley1 11mo ago
  Sounds like a wip to me, "do it better or get punished"
balleddog 11mo ago
Is an anthropic api key really necessary? A major roadblock for taking a test drive. Already have a Claud Max subscription but an anthropic api key still need at least 5$/mon extra.
- thenthenthen 11mo ago
  Sounds like video streaming services…
- asn0 11mo ago
  You could use the prompts in the code to create a Claude Code sub-agent[1], which would do the same thing without an API key 1. https://docs.claude.com/en/docs/claude-code/sub-agents https://docs.claude.com/en/docs/claude-code/sub-agents
  - threecheese 11mo ago
    How would you invoke the subagent? Can a HookResponse cause a subagent to be invoked, to perform analysis on the action taken and then inject that back into the main loop? Or would the hook invoke another instance of claude code? I just read through the hook docs and I’m a bit fuzzy on the bidirectionality of it.
- epiccoleman 11mo ago
  I really want Anthropic to let me make an API token that pulls from the same pool of usage that my Pro subscription does with the official clients. It would be cool to be able to run experiments with alternate clients and automation and stuff without having to go swipe the card at the ol' API token refilling station.
janpio 11mo ago
The demo video in the GH page didn't work for me, but there is also one on Twitter/X: https://xcancel.com/fulcrumML/status/1984054489851310191 https://xcancel.com/fulcrumML/status/1984054489851310191
nberkman 11mo ago
Submitted a PR with AWS Bedrock support: https://github.com/fulcrumresearch/quibbler/pull/5/files https://github.com/fulcrumresearch/quibbler/pull/5/files (credits!)
agarttha 11mo ago
Replace the middle manager
stacktraceyo 11mo ago
Can the same concept be used for non coding tasks?
benzible 11mo ago
Cool concept, but I picture Quibbler as an off-brand Batman villain.

114 points by etherio 11mo ago

cjonas 11mo ago

Vibeception

mouse_ 11mo ago

There's so many agents to handle my agents, I'm gonna need agents for my agent agents soon.

vismit2000 11mo ago
Reminds of factory factory factory! https://factoryfactoryfactory.net/ https://factoryfactoryfactory.net/

deleted 11mo ago

[deleted]

gexla 11mo ago

More explanation here that I found by Googling around. Though not sure it has more info than the Github page. https://fulcrumresearch.ai/2025/10/22/introducing-orchestra-quibbler.html https://fulcrumresearch.ai/2025/10/22/introducing-orchestra-...

etherio 11mo ago

hey HN! happy to answer any questions this kind of tool is especially useful in longer running tasks to enforce your intent without having to check in on your agent all the time

anonymous908213 11mo ago
Can users stack Quibblers, so Quibbler 2 corrects Quibbler 1 if, say, it fabricates an issue in the code it's reviewing? If so, have you found an optimum number of Quibblers for the Quibbler stack? Also, might users form a Quibbler council such that multiple Quibblers review the same thing and form a consensus before proceeding?
- Balinares 11mo ago
  I love the pixel-perfect precision with which this comment is straddling the Poe's Law line. That aside I also love the concept of Quibbler Council and I'd get a kick out of seeing it in action.
  - sheepscreek 11mo ago
    MoQs - Mixture of Quibblers? Would be convenient to have them run on dedicated FGPAs. Then they can facilitate near real-time quibbing at the network level across all packets.

qq66 11mo ago

> We’ve found Quibbler useful in preventing agents from: 1) fabricating results without running commands What a world we've created for ourselves

N_Lens 11mo ago
Next step is critics for the critics.
- CoastalCoder 11mo ago
  Until they reach critical mass.

anonymous908213 11mo ago

But who polices the vibe police?

Brajeshwar 11mo ago
“Well, who’s gonna monitor the monitors of the monitors?” — Enemy of the State (Movie)

p0w3n3d 11mo ago

In other words, the Quibbler siphons wrackspurts away from your code.

selfawareMammal 11mo ago

An agent's agent?

hikarudo 11mo ago
A gentleman's gentleman!
oneandonley1 11mo ago
Sounds like a wip to me, "do it better or get punished"

balleddog 11mo ago

Is an anthropic api key really necessary? A major roadblock for taking a test drive. Already have a Claud Max subscription but an anthropic api key still need at least 5$/mon extra.

thenthenthen 11mo ago
Sounds like video streaming services…
asn0 11mo ago
You could use the prompts in the code to create a Claude Code sub-agent[1], which would do the same thing without an API key 1. https://docs.claude.com/en/docs/claude-code/sub-agents https://docs.claude.com/en/docs/claude-code/sub-agents
- threecheese 11mo ago
  How would you invoke the subagent? Can a HookResponse cause a subagent to be invoked, to perform analysis on the action taken and then inject that back into the main loop? Or would the hook invoke another instance of claude code? I just read through the hook docs and I’m a bit fuzzy on the bidirectionality of it.
epiccoleman 11mo ago
I really want Anthropic to let me make an API token that pulls from the same pool of usage that my Pro subscription does with the official clients. It would be cool to be able to run experiments with alternate clients and automation and stuff without having to go swipe the card at the ol' API token refilling station.

janpio 11mo ago

The demo video in the GH page didn't work for me, but there is also one on Twitter/X: https://xcancel.com/fulcrumML/status/1984054489851310191 https://xcancel.com/fulcrumML/status/1984054489851310191

nberkman 11mo ago

Submitted a PR with AWS Bedrock support: https://github.com/fulcrumresearch/quibbler/pull/5/files https://github.com/fulcrumresearch/quibbler/pull/5/files (credits!)

agarttha 11mo ago

Replace the middle manager

stacktraceyo 11mo ago

Can the same concept be used for non coding tasks?

benzible 11mo ago

Cool concept, but I picture Quibbler as an off-brand Batman villain.