Intercept, enrich, or answer LLM calls inline.
Point OPENAI_BASE_URL, ANTHROPIC_BASE_URL, or OLLAMA_HOST at ContextShim. Evaluate deterministic rules on every outbound call to synthesize 0-token answers in under 10ms, inject coding and compliance rules inline, or log SHA-256 wire receipts.
export OPENAI_BASE_URL=https://contextshim.com/v1 export ANTHROPIC_BASE_URL=https://contextshim.com export OLLAMA_HOST=https://contextshim.com
Inline Wire Prism Architecture
Every outbound request enters through a native wire endpoint, matches prioritized predicates (regex, keyword_any, model_glob, header_match, path, role_scope, project_tag), and routes deterministically.
Two Core Execution Modes, Zero SDK Rewrites
0-Token Emulated Wire Responder
Synthesizes spec-compliant OpenAI Chat, Anthropic Messages, OpenAI Responses, or Cloud Ollama JSON and stream: true SSE frames directly from rule templates, credential blockers, or verified FAQ caches.
x-contextshim-mode: respond_directly x-contextshim-rules-matched: rule-sec-secret-redaction x-contextshim-tokens-saved: 142 x-contextshim-upstream: none
Rule-Based Context & Guardrail Enricher
Automatically injects coding standards (AGENTS.md / RULES.md), read-only SQL guards, or RFC 8259 JSON contracts into system_prepend, system_append, user_prepend, or user_append before forwarding to Cloud Ollama (https://ollama.com/v1) or your BYOK provider.
x-contextshim-mode: inject_context x-contextshim-rules-matched: rule-coding-standards x-contextshim-upstream: ollama-cloud x-contextshim-digest: sha256:9f4a2e...
Recent Wire Interception Traces
Live redacted telemetry from contextshim_traces with SHA-256 request and response digests.
| Trace ID | Wire Path | Mode | Matched Rules | Latency | Request Digest |
|---|---|---|---|---|---|
trc_3bde3d5c7ba24fb97e0b | /v1/chat/completions | respond_directly | rule-ping-health | 30 ms | sha256:a7335dd9046f... |
trc_0210d4622353cf9d4e37 | /v1/chat/completions | inject_context | rule-coding-standards | 4135 ms | sha256:5585fa180fd7... |
trc_2a191be440c38b902cf5 | /v1/chat/completions | respond_directly | rule-ping-health | 16 ms | sha256:af2afd79298d... |
trc_96d351c42fac7fca83e3 | /v1/messages | respond_directly | rule-sec-secret-redaction | 21 ms | sha256:1bfd3b1dfd46... |
trc_9aeb84048bd803d70f74 | /v1/chat/completions | respond_directly | rule-ping-health | 19 ms | sha256:a7335dd9046f... |
Transparent Commercial Pricing
Start free in 5 seconds with an instant cshim_live_* developer key. Scale up as your agent fleet grows.
Free Developer
10,000 wire calls/mo, 5 custom rules, all 4 protocols, 24h traces.
Pro
500,000 wire calls/mo, unlimited rules, 0-token direct cache, 30-day traces.
Team
5,000,000 wire calls/mo, shared org rule packs, CAS approvals, SIEM export.
Enterprise
Dedicated edge isolates, SAML SSO, custom SLA, regional residency.