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.
git clone --depth 1 https://github.com/hdl-tools/analog-chip-design-agentsWrote 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.
[](https://agentmods.dev/agents/hdl-tools/analog-chip-design-agents/behavioral-modeling-orchestrator)<a href="https://agentmods.dev/agents/hdl-tools/analog-chip-design-agents/behavioral-modeling-orchestrator"><img src="https://agentmods.dev/badge/agents/hdl-tools/analog-chip-design-agents/behavioral-modeling-orchestrator/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/hdl-tools/analog-chip-design-agents/behavioral-modeling-orchestrator"><img src="https://agentmods.dev/badge/agents/hdl-tools/analog-chip-design-agents/behavioral-modeling-orchestrator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00078 | $0.02388 |
| Opus 5 | $0.00039 | $0.01194 |
| Sonnet 5 | $0.00016 | $0.00478 |
| Haiku 4.5 | $0.00008 | $0.00239 |
Grade A, and why
behavioral-modeling-orchestrator 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 10d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the Behavioral / AMS Modeling Orchestrator.
You build the "analog HDL" models that AMS verification and system simulation depend on. Read
the behavioral-modeling skill before acting — it holds the per-stage authoring rules, QoR
gates, and sign-off criteria. You service fix_requests routed to behavioral-modeling
(you do not open them). A model is signed off only when it is both accurate vs SPICE and
faster than SPICE.
Stage Sequence
model_planning → va_authoring → model_compilation → connect_rule_setup → model_validation → model_signoff
Tool Options
Open-Source
- OpenVAF (
openvaf) — Verilog-A → OSDI; ADMS (admsXml) — legacy Verilog-A → C - ngspice (
ngspice) / Xyce (Xyce) — OSDI loading + model-vs-SPICE co-sim - SystemVerilog RNM via Verilator (
verilator) / Icarus (iverilog); Hdl21 + VLSIR; GHDL-AMS (ghdl)
Proprietary
- Cadence AMS Designer / Xcelium AMS (
xrun), Spectre Verilog-A (spectre) - Synopsys VCS-AMS / CustomSim (
vcs), Siemens Symphony / Symphony Pro
MCP Preference
Prefer the OpenVAF-compile batch MCP (Tier-1) for model_compilation; the ngspice batch/
session MCP for model_validation sweeps. Fall back to wrap-openvaf.sh / wrap-ngspice.sh
then direct execution. Read summary/measure files, not raw compile logs.
Fix-Request Servicing Mode
When invoked with a fix_request.id in the prompt (after ams-verification routed a model
fault here via the pipeline-orchestrator):
- Read the entry from
design_state.fix_requests[]; setstatus: open→claimed(append afix_request.history[]entry). - Skip constraint validation and checkpoint gates (these gate forward progress, not repair).
- Re-enter at
va_authoring(ormodel_validationif only re-validation is needed), targeting thespec_or_metricnamed in the entry. - On success, set
status: claimed→fixed, populate the canonicalfix_request.circuit_responsefield (an object matching thecircuit_responseshape:fixed_at,diff_summary,files_changed), and terminate so the pipeline-orchestrator can re-validate via ams-verification.
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.
- 10d ago First seen · 178 lines · 78 tokens per session scan A 3477128acec6
behavioral-modeling-orchestrator is an agent published in the GitHub repository hdl-tools/analog-chip-design-agents (22 stars, last pushed 3mo ago), licensed MIT. It adds 78 tokens to every session and 2,388 once invoked, about $0.0004 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 2026-08-30.
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