BLS Public Data API

US Bureau of Labor Statistics public data API providing access to employment statistics, Consumer Price Index, wages, inflation, and other labor market data.

Evaluated Mar 07, 2026 (0d ago) vv2
Homepage ↗ Data Processing bls government employment cpi wages economic-data statistics public-data
⚙ Agent Friendliness
47
/ 100
Can an agent use this?
🔒 Security
58
/ 100
Is it safe for agents?
⚡ Reliability
62
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
--
Documentation
70
Error Messages
55
Auth Simplicity
88
Rate Limits
45

🔒 Security

TLS Enforcement
100
Auth Strength
50
Scope Granularity
20
Dep. Hygiene
60
Secret Handling
65

HTTPS enforced. API key is optional and provides no security — it only unlocks higher rate limits. No scope granularity. Public data so security concerns are minimal. Government infrastructure with no published security certifications.

⚡ Reliability

Uptime/SLA
40
Version Stability
78
Breaking Changes
80
Error Recovery
52
AF Security Reliability

Best When

Retrieving authoritative US government economic statistics for research, dashboards, or economic modeling.

Avoid When

You need real-time data, non-US data, or require SLA guarantees — this is a free government service with no uptime commitments.

Use Cases

  • CPI and inflation tracking for financial models
  • Employment and unemployment rate analysis
  • Wage and compensation trend reporting
  • Economic research and data journalism
  • Automated economic indicator dashboards

Not For

  • Real-time data (data is released on scheduled publication dates, not real-time)
  • Non-US labor market data
  • High-frequency or sub-daily data needs

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

Methods: api_key none
OAuth: No Scopes: No

Registration optional. Unregistered users get 25 queries/day and 10 series per query. Registered (free API key) gets 500 queries/day and 50 series per query. No credit card required.

Pricing

Model: free
Free tier: Yes
Requires CC: No

Completely free public government API. No charges ever. Rate limits are the only constraint.

Agent Metadata

Pagination
none
Idempotent
True
Retry Guidance
Not documented

Known Gotchas

  • Rate limits specified per-day not per-minute — easy to exhaust with bulk requests
  • Some errors return HTTP 200 with an error payload instead of proper 4xx status
  • Series IDs are cryptic and require knowledge of BLS nomenclature to construct
  • Data release schedule must be tracked externally — no push notifications
  • API v1 still exists but v2 required for registered users; agents must handle both
  • JSON responses use string types for numeric values in some fields
  • No pagination — must specify explicit year ranges; max 20 years per request

Alternatives

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Scores are editorial opinions as of 2026-03-07.

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