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feat(examples): add Song Meaning Analyzer agent#568

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raahulrahl merged 4 commits into
GetBindu:mainfrom
Subhajitdas99:examples/song-meaning-agent
May 29, 2026
Merged

feat(examples): add Song Meaning Analyzer agent#568
raahulrahl merged 4 commits into
GetBindu:mainfrom
Subhajitdas99:examples/song-meaning-agent

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@Subhajitdas99 Subhajitdas99 commented May 29, 2026

Summary

  • Problem: The Bindu Agents Tracker listed a Song Meaning Analyzer agent as "Not started" with no GitHub link.
  • Why it matters: Example agents demonstrate Bindu's capabilities and help new contributors understand how to build with bindufy() in real-world scenarios.
  • What changed: Added examples/song-meaning-agent/ — an Agno + OpenRouter agent that returns structured SUMMARY / MEANING / EVIDENCE analysis for any song query, with skill definition and README.
  • What did NOT change: No changes to the core Bindu framework, server, extensions, or any existing examples.

Change Type

  • Feature

Scope

  • Documentation

Linked Issue/PR

Related: Bindu Agents Tracker — Song Meaning Analyzer (Status: Not started, Difficulty: Easy)

User-Visible / Behavior Changes

New example agent at examples/song-meaning-agent/. Requires OPENROUTER_API_KEY. No changes to existing behaviour.

Security Impact

  • New permissions/capabilities? No
  • Secrets/credentials handling changed? No
  • New/changed network calls? Yes — agent calls OpenRouter API at runtime when handling a request
  • Database schema/migration changes? No
  • Authentication/authorization changes? No
  • Risk + mitigation: API key loaded from environment variable only, never hardcoded. Marked false-positive detection with # pragma: allowlist secret in docstring.

Verification

Environment

  • OS: Windows 10
  • Python version: 3.12
  • Storage backend: In-memory
  • Scheduler backend: In-memory

Steps to Test

  1. cd examples/song-meaning-agent
  2. cp .env.example .env and set OPENROUTER_API_KEY
  3. python song_meaning_agent.py
  4. Send a message: What does Bohemian Rhapsody by Queen really mean?

Expected Behavior

  • Agent starts and registers DID successfully
  • Song Meaning Skill v1.0.0 loads
  • Returns structured SUMMARY / MEANING / EVIDENCE analysis

Actual Behavior

Matches expected. Multi-turn conversation works — agent asks a clarifying question then delivers full analysis. DID signature present on every response.

Evidence

  • Test output / logs

Human Verification

  • Verified scenarios: Agent starts correctly, skill loads, DID registered, full song analysis returned end-to-end via both curl and Bindu inbox UI
  • Edge cases checked: Missing API key returns a clear error message without crashing
  • What you did NOT verify: Behaviour with non-English song titles

Compatibility / Migration

  • Backward compatible? Yes
  • Config/env changes? No
  • Database migration needed? No

Failure Recovery

  • Remove examples/song-meaning-agent/ to revert — self-contained, no framework changes
  • No known bad symptoms

Risks and Mitigations

None — self-contained example with zero changes to core framework.

Checklist

  • Pre-commit hooks pass
  • Documentation updated
  • Security impact assessed
  • Human verification completed
  • Backward compatibility considered

Summary by CodeRabbit

  • New Features

    • Added a Song Meaning Analyzer agent and skill that produces structured Markdown outputs (SUMMARY, MEANING, EVIDENCE) and can run as a local JSON-over-HTTP microservice.
  • Documentation

    • Added a comprehensive README with setup, run instructions, example queries, output schema, and deployment/endpoint notes.
  • Chores

    • Added an example environment variable placeholder for OPENROUTER_API_KEY.

Review Change Stack

Agno + OpenRouter agent that analyzes song meanings with structured
SUMMARY / MEANING / EVIDENCE output. Matches Bindu Agents Tracker spec.
Verified locally end-to-end with Bohemian Rhapsody test query.
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coderabbitai Bot commented May 29, 2026

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 145f9c4d-2b96-4e99-bd60-adf1dec96618

📥 Commits

Reviewing files that changed from the base of the PR and between 02d83ac and a9b5cbb.

📒 Files selected for processing (1)
  • examples/song-meaning-agent/README.md
💤 Files with no reviewable changes (1)
  • examples/song-meaning-agent/README.md

📝 Walkthrough

Walkthrough

Adds a Song Meaning Analyzer example: README and .env, a skill YAML describing structured SUMMARY/MEANING/EVIDENCE output and examples, and a Python Bindu service that configures an OpenRouter-backed Agent, validates incoming messages in handler, and serves results via bindufy.

Changes

Song Meaning Agent Example

Layer / File(s) Summary
Documentation and Environment Setup
examples/song-meaning-agent/README.md, examples/song-meaning-agent/.env.example
Complete README documenting agent purpose, structured output schema (SUMMARY/MEANING/EVIDENCE), setup/run instructions, example queries, and required env vars. Adds OPENROUTER_API_KEY placeholder in .env.example.
Skill Configuration and Schema
examples/song-meaning-agent/skills/song-meaning-skill/skill.yaml
Skill definition with metadata, features, declared input/output modes, two example invocations with expected Markdown outputs, output constraints, and A2A transport settings for deployment.
Agent Service Implementation
examples/song-meaning-agent/song_meaning_agent.py
Module docstring and constants, INSTRUCTIONS and Agent configured to use OpenRouter GPT-4o mini (reads OPENROUTER_API_KEY), Bindu config with deployment/CORS settings, handler(messages) validating user input and invoking agent.run, and __main__ startup calling bindufy.

Sequence Diagram

sequenceDiagram
  participant User
  participant Handler
  participant Agent
  participant OpenRouter
  User->>Handler: POST messages payload
  Handler->>Handler: Validate user messages
  Handler->>Agent: run(input=messages)
  Agent->>OpenRouter: forward prompt + INSTRUCTIONS
  OpenRouter->>Agent: model response (Markdown)
  Agent->>Handler: formatted result
  Handler->>User: JSON response with SUMMARY/MEANING/EVIDENCE
Loading

Estimated Code Review Effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

  • GetBindu/Bindu#483: Refactors example agents to use an Agent with OpenRouter and a typed handler(messages) that calls agent.run(input=messages).

Suggested Reviewers

  • Paraschamoli
  • raahulrahl

Poem

🐰 I hopped through verses under a silver moon,
I nudged out a SUMMARY and followed the tune,
MEANING in bullets, EVIDENCE in sight,
A tiny Bindu agent hums through the night — 🎵🌙

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Title check ✅ Passed The title 'feat(examples): add Song Meaning Analyzer agent' directly and clearly describes the main change—adding a new example agent. It is concise, specific, and follows conventional commit format.
Description check ✅ Passed The PR description comprehensively addresses all template sections: summary with problem/why/what/scope, change type, scope areas, linked issue, user-visible changes, security impact analysis, detailed verification steps with environment/test steps/expected/actual behavior, evidence, human verification details, compatibility, failure recovery, risks, and completed checklist items.
Docstring Coverage ✅ Passed Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests

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Actionable comments posted: 2

🧹 Nitpick comments (2)
examples/song-meaning-agent/song_meaning_agent.py (2)

141-142: ⚡ Quick win

Use get_logger(__name__) instead of print().

The startup/example messages use print(). As per coding guidelines, use get_logger(__name__) from bindu/utils/logging.py instead of print() for logging.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@examples/song-meaning-agent/song_meaning_agent.py` around lines 141 - 142,
Replace the two print() startup lines with structured logging: import and call
get_logger(__name__) from bindu.utils.logging at the top (or ensure a
module-level logger variable named logger exists), then use logger.info(...) to
emit the startup URL and example message instead of print; update the code
around the existing print statements in song_meaning_agent.py (the two printed
messages) to use logger.info so they follow project logging conventions.

99-99: 💤 Low value

Prefer app_settings over direct env reads.

BINDU_DEPLOYMENT_URL (Line 99) is read directly via os.getenv. As per coding guidelines, use app_settings from bindu/settings.py for configuration instead of accessing environment variables directly. The OPENROUTER_API_KEY reads at Lines 70/99 feed the agno model directly and may be unavoidable for this standalone example, but config-style values should route through app_settings where available.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@examples/song-meaning-agent/song_meaning_agent.py` at line 99, Replace the
direct os.getenv usage for "BINDU_DEPLOYMENT_URL" with the project's
configuration accessor: import and use app_settings (from bindu.settings) and
read the deployment URL as app_settings.BINDU_DEPLOYMENT_URL (or the equivalent
attribute) instead of os.getenv; update the dict entry that currently sets "url"
to reference that app_settings property so configuration flows through the
central settings object (keep the existing fallback behavior in app_settings if
needed), and leave any unavoidable direct reads for OPENROUTER_API_KEY only if
no app_settings mapping exists—otherwise add the key to app_settings and read it
there.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@examples/song-meaning-agent/README.md`:
- Line 16: The README has two fenced code blocks (the one containing "SUMMARY"
and the project-structure block) missing a language hint which triggers
markdownlint MD040; update both fences to include a language token (use "text")
so the blocks read ```text ... ``` thus adding the language hint for the fenced
code blocks.

In `@examples/song-meaning-agent/song_meaning_agent.py`:
- Around line 45-46: The MEANING bullet length spec in song_meaning_agent.py
currently says "3–5 bullet points (each ~165 words)" which is likely a
typo/inflated target; change the per-bullet target to the intended value (e.g.,
"~65 words" or "~165 words total") in the "**MEANING**" section of
song_meaning_agent.py and make matching edits in README.md and skill.yaml so the
three files share the same bullet-length spec (update the entries that currently
reference "~165 words" in README.md and the occurrences in skill.yaml). Ensure
the wording is consistent across the three files and adjust any nearby comments
or variable names that refer to the old per-bullet target.

---

Nitpick comments:
In `@examples/song-meaning-agent/song_meaning_agent.py`:
- Around line 141-142: Replace the two print() startup lines with structured
logging: import and call get_logger(__name__) from bindu.utils.logging at the
top (or ensure a module-level logger variable named logger exists), then use
logger.info(...) to emit the startup URL and example message instead of print;
update the code around the existing print statements in song_meaning_agent.py
(the two printed messages) to use logger.info so they follow project logging
conventions.
- Line 99: Replace the direct os.getenv usage for "BINDU_DEPLOYMENT_URL" with
the project's configuration accessor: import and use app_settings (from
bindu.settings) and read the deployment URL as app_settings.BINDU_DEPLOYMENT_URL
(or the equivalent attribute) instead of os.getenv; update the dict entry that
currently sets "url" to reference that app_settings property so configuration
flows through the central settings object (keep the existing fallback behavior
in app_settings if needed), and leave any unavoidable direct reads for
OPENROUTER_API_KEY only if no app_settings mapping exists—otherwise add the key
to app_settings and read it there.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: c33a5458-1d87-49f1-b3dc-4ede462a4666

📥 Commits

Reviewing files that changed from the base of the PR and between f09d037 and 39092a2.

📒 Files selected for processing (4)
  • examples/song-meaning-agent/.env.example
  • examples/song-meaning-agent/README.md
  • examples/song-meaning-agent/skills/song-meaning-skill/skill.yaml
  • examples/song-meaning-agent/song_meaning_agent.py

Comment thread examples/song-meaning-agent/README.md Outdated
Comment thread examples/song-meaning-agent/song_meaning_agent.py Outdated
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LGTM

@raahulrahl raahulrahl merged commit 682a19c into GetBindu:main May 29, 2026
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3 participants