forma-sdk 3.3.1

FORMAAI — the AI Agent Firewall. Zero-config capture of every LLM call, human approvals, kill switch, and a cryptographically signed audit trail.

FORMAAI SDK — v3.0.0

The AI Agent Firewall. Capture every LLM call, pause high-stakes ones for a human, halt any agent instantly, and prove it all with a signed audit trail.

FORMAAI sits between your code and the model. The moment you call tl.init(), every LLM and tool call is captured as a cryptographically signed run, can be paused for human approval, and can be killed from the dashboard in under two seconds. Four pillars, zero policy config:

1. Capture — every OpenAI / Anthropic / LiteLLM / LangChain call is auto-recorded (model, tokens, cost, latency).
2. Approve — high-stakes calls pause until a human signs off in the FORMAAI inbox.
3. Kill — halt any agent from the dashboard with no redeploy.
4. Prove — every captured run is HMAC-signed and tamper-evident.

---

Install

pip install forma-sdk

Import name is trustlayer:

import trustlayer as tl

---

Quickstart — one line, everything captured

import trustlayer as tl

# One call. Every LLM call in your process is now captured + signed.
# No decorators, no context managers, no edits inside your business logic.
tl.init(api_key="tl_live_YOUR_KEY")    # from formaai.in → Settings

# Your existing code is unchanged.
result = run_underwriting_model(application)

Confirm it's connected:

print(tl.verify())
# → {"verified": True, "capture": "active", "signing": "enabled",
#    "kill_switch": "off", "approvals": "off", ...}

---

The four pillars

import trustlayer as tl

tl.init(
    api_key="tl_live_YOUR_KEY",
    human_sponsor="[e-mail]",            # accountable human on every run
    kill_switch=True,                            # halt this agent from the dashboard
    max_cost_usd=5.0,                            # hard per-run cost cap
    require_approval_when=lambda ctx: ctx.get("amount", 0) > 1_000_000,
    approval_message="High-value transaction requires human review.",
)

• Capture is on by default — nothing else needed.
• Approve: require_approval_when(ctx) returns True → the call pauses until a human decides in the FORMAAI inbox (fail-closed).
• Kill: kill_switch=True → triggering a kill from the dashboard raises KillSwitchTriggered on the next call in < 100 ms.
• Prove: every run is signed with your API key; verify with trustlayer verify <run_id>.

---

Multiple agents — tl.register() / agents= (zero edits)

Map your existing functions to agents without touching their bodies. Each one gets its own discrete, signed run and its own approval / kill / cost config:

import trustlayer as tl
from my_app import approve_loan, validate_kyc, detect_fraud

tl.init(
    api_key="tl_live_YOUR_KEY",
    agents={
        "kyc-validator":  validate_kyc,                                   # bare callable
        "loan-approval":  {"fn": approve_loan, "risk_level": "HIGH", "kill_switch": True},
        "fraud-detector": {"fn": detect_fraud,
                           "require_approval_when": lambda ctx: True},
    },
)

# Or register after init (decorator form also works):
tl.register("loan-approval", approve_loan, risk_level="HIGH", max_cost_usd=2.0)

@tl.register("kyc-validator", kill_switch=True)
def validate_kyc(doc): ...      # one line above the def — body unchanged

# Call them exactly as before — each captured and attributed independently.
result = approve_loan(application)

Per-agent kwargs (same as tl.init's per-agent set): compliance, risk_level, human_sponsor, purpose, max_cost_usd, require_approval_when, approval_message, approval_title, approval_timeout, approval_poll_interval, approval_via, version, kill_switch. Unknown keyword → TypeError.

---

Human approvals (human-in-the-loop)

tl.init(
    api_key="tl_live_YOUR_KEY",
    require_approval_when=lambda ctx: ctx.get("amount", 0) > 1_000_000,
    approval_message="High-value transaction requires human review.",
)
result = approve_loan(application)   # pauses for sign-off on high-stakes calls (fail-closed)

require_approval_when(ctx) receives {agent_name, provider, model, action_type, prompt, tool_name, tool_args}; return True to require approval. It may also return a dict for per-call overrides: {"required": True, "timeout": 60, "message": "STAT review"}. Predicate errors fail closed (require approval).

from trustlayer import ApprovalRejectedError, ApprovalTimeoutError

try:
    result = approve_loan(application)
except ApprovalRejectedError as e:
    ...   # a human rejected the action — it was NOT executed
except ApprovalTimeoutError as e:
    ...   # no decision within the timeout

---

Kill switch

tl.init(api_key="tl_live_YOUR_KEY", kill_switch=True)        # process-wide
# or per agent:
tl.register("fraud-agent", detect_fraud, kill_switch=True)

When you trigger a kill from the dashboard, the next LLM/tool call raises KillSwitchTriggered — no redeployment. Works offline too via FORMA_KILL_SWITCH=1 or a ~/.forma/kill.lock file (useful in air-gapped / strict-egress Kubernetes).

---

Signed audit trail (Prove)

Every captured run is finalized, HMAC-signed with your API key, and shipped to your audit trail. Verify any run's signature locally — no API key needed if you use an Ed25519 keypair:

trustlayer verify <run_id>     # ✓ VERIFIED — signature is valid and untampered
trustlayer export <run_id>     # download the signed record (PDF)
trustlayer keygen              # generate an Ed25519 signing keypair

---

Observability API

Call	Returns
tl.verify()	{verified, agent, capture, signing, kill_switch, approvals, summary} — confirm the SDK is connected and capturing.
tl.status()	{version, capture_active, ambient_runs, kill_switch_armed, kill_switch_active, approvals_configured, ambient_agent, frameworks}.

tl.init(api_key="tl_live_...", kill_switch=True,
        require_approval_when=lambda ctx: True)
tl.verify()
# → {"verified": True, "capture": "active", "signing": "enabled",
#    "kill_switch": "armed", "approvals": "configured", ...}

---

tl.init() parameters

Parameter	Description
api_key	FORMAAI API key (or FORMA_API_KEY env, or forma setup).
api_url	Backend URL override (default https://api.formaai.in).
agent_name	Display name for ambient auto-captured runs.
human_sponsor	Accountable human recorded on every run.
auto_capture (True)	Auto-patch OpenAI/Anthropic/LiteLLM/LangChain.
ambient_runs (True)	Create signed runs for auto-captured calls.
kill_switch (False)	Start a process-level kill-switch watcher.
compliance	Optional framework tags recorded on runs (metadata only).
agents	Zero-edit multi-agent map. {"name": fn} or {"name": {"fn": fn, ...}}.
purpose / risk_level	Metadata recorded on runs.
max_cost_usd	Hard per-run cost cap; runs over it are marked failed.
require_approval_when	Predicate ctx -> bool — pause for a human when it returns True.
approval_message / approval_title / approval_timeout / approval_poll_interval / approval_via	Approval configuration.
timeout (10) / max_retries (2)	HTTP transport settings.

---

CLI

trustlayer setup              # one-time guided setup (paste your key)
trustlayer scan app.py        # check a file for governance coverage
trustlayer verify <run_id>    # verify a run signature
trustlayer export <run_id>    # download a signed record
trustlayer status             # API connection + fleet overview
trustlayer keygen             # Ed25519 signing keypair

---

Node.js / TypeScript

Coming soon. Capture, approvals, kill switch, and signing are Python-first today.

---

Dashboard & docs

• Dashboard: formaai.in
• Developer guide: formaai.in/developer-guide

Migrating from 2.x

company_policy={} and the local PII / prompt-injection gate (enforce, preset, block, allow, pii, authorized_actions, domain, tl.preview, ComplianceViolation) were removed in 3.0.0. FORMAAI is now a pure capture + approve + kill + prove firewall — you define what needs a human and what can be killed; we capture and sign everything. Remove company_policy from your tl.init() and keep require_approval_when / kill_switch / max_cost_usd as top-level params.

License

MIT — see LICENSE.