01
Quality tiers
Page Type Contracts
Define what each page needs to qualify for FULL, BASIC, SHELL, or SUPPRESS.
Open-source governance for agent-built publishing
Contracts before code. Guardrails before scale.
Constitutional CMS is a governance framework for AI agents that build websites. It defines what agents are allowed to publish, when pages qualify, and how systems fail safely when the data boundary drifts.
From the Labs
Built inside Targeted Impressions LabsFive contracts
The model is simple enough to read quickly and strict enough to stop quiet failures.
Each contract describes one part of the publishing system so parallel agents can work without silently undermining the site they are building together.
02
Single-writer pipelines
Enrichment Stage Contracts
Declare which stage writes which state, what it reads, and the gates that must pass first.
03
No phantom links
Link Graph Rules
Constrain which page types can link to one another before a broken graph reaches production.
04
Read and write separation
Snapshot Boundary
Turn the shared data boundary into the inter-agent contract so drift fails safely instead of silently.
05
Live acceptance
Sprint Contracts
Tie scope, ownership, and exit criteria to what the live site proves, not what merged locally.
How it works
Read the contract, write inside the boundary, verify against the live surface.
The contract replaces hand-wavy coordination. Each role knows what it can touch, what it must not invent, and what counts as done in production.
1
Agents read the contract before writing code.
2
Write agents produce snapshot rows inside their boundary.
3
Read agents consume those rows and never improvise primary data.
4
Validation checks link integrity, tier eligibility, and live outcomes.
Write agents
Produce snapshot stateSnapshot boundary
Shared contractRead agents
Consume without improvisingProduction proof
Named proof, bounded detail.
Constitutional CMS governs SERPRadio, a live programmatic publishing system. The public case study stays at the outcome and architecture layer. The private mappings and heuristics stay private.
851
pages returning HTTP 200
54ms
median TTFB
4
AI agents working in parallel
19
merged PRs in one coordinated push
SERPRadio
The public case study focuses on publish-tier governance, link integrity, and agent coordination through contracts. It does not expose the internal route maps, threshold tables, or enrichment recipes that make the operating model proprietary.
Read the case studyOpen and proprietary
The pattern is open. The detailed mappings remain a moat.
This launch publishes the governance architecture and enough proof to make it credible. It does not publish the detailed operational intelligence that turns one implementation into an advantage.
Open
- The five-contract model and YAML shape
- Example contracts and a validator that checks internal consistency
- The publish-tier pattern for graceful degradation
- A bounded case study that shows outcome-level proof
Private
- Entity registries, route maps, and other proprietary mappings
- Threshold tables, scoring logic, and compression heuristics
- Prompt packs, enrichment recipes, and voice-control systems
- Internal runbooks, source coverage matrices, and eval baselines
Guided start
The site gives the map. GitHub holds the full reference.
Start with the overview here, then move into the repository for the full contract files, validation script, and implementation notes.
Copy the contracts
Start with the contract directory, then rename the entities and thresholds for your own domain.
Point agents at the rules
The contract is read first so code generation begins from constraints instead of from improvisation.
Validate before publish
Run structural validation locally, then verify live output against the same rules after deployment.
From the Labs
Constitutional CMS is one public spoke inside a broader systems portfolio.
- SERPRadio proves the governance model against a live, agent-built publishing system.
- CMO Soundtrack extends the broader portfolio into operator workflow and narrative rhythm.
- Targeted Impressions Labs keeps the umbrella thesis legible while each spoke develops its own proof surface.
Launch surface