Tally API
Tally is a free-first form builder that exposes a REST API and webhooks for programmatically retrieving form responses and managing forms.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
TLS enforced on all endpoints. OAuth scopes are coarse-grained (workspace-level). No IP allowlisting available. Webhook signatures use HMAC-SHA256 for payload verification.
⚡ Reliability
Best When
An agent needs to ingest user-submitted structured data with minimal setup and a generous free tier covers the volume.
Avoid When
You need to programmatically create or modify form fields via API, as Tally's API is primarily read-oriented for responses.
Use Cases
- • Polling a Tally form for new submissions and routing responses to a CRM or database
- • Triggering downstream agent workflows via Tally webhooks when a form is submitted
- • Listing all forms in a workspace to audit or mirror form metadata
- • Fetching paginated form responses for batch processing or analytics pipelines
- • Creating lightweight intake forms for agent-driven onboarding flows
Not For
- • High-volume transactional data collection where sub-second latency matters
- • Complex multi-step conditional logic requiring programmatic form construction at runtime
- • Enterprise form workflows requiring SOC2 compliance or data residency guarantees
Interface
Authentication
OAuth 2.0 is the primary auth method for the REST API; API keys are available for simpler integrations. Access tokens are workspace-scoped.
Pricing
One of the most generous free tiers among form builders; suitable for most agent automation use cases without payment.
Agent Metadata
Known Gotchas
- ⚠ Webhook payloads do not include all form metadata — a separate GET call is needed to resolve field labels from field IDs
- ⚠ OAuth token refresh is not documented clearly; tokens can expire silently requiring re-auth flows
- ⚠ Form response timestamps are in UTC but not always consistently formatted across endpoints
- ⚠ File upload field values return temporary pre-signed URLs that expire; agents must download files promptly
- ⚠ Deleted or archived forms still appear in some list endpoints, requiring agents to filter by status field
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Tally API.
Scores are editorial opinions as of 2026-03-06.